Cellular Respiration: Harvesting Chemical Energy

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Cellular Respiration: Harvesting Chemical Energy"

Transcription

1 Chapter 9 Cellular Respiration: Harvesting Chemical Energy Overview: Life Is Work Living cells require energy from outside sources Some animals, such as the giant panda, obtain energy by eating plants, and some animals feed on other organisms that eat plants PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp Fig. 9- Energy flows into an ecosystem as sunlight and leaves as heat Photosynthesis generates O and organic molecules, which are used in cellular respiration Cells use chemical energy stored in organic molecules to regenerate, which powers work Fig. 9- ECOSYSTEM CO + H O Light energy Photosynthesis in chloroplasts Cellular respiration in mitochondria Organic molecules + O Concept 9.: Catabolic pathways yield energy by oxidizing organic fuels Several processes are central to cellular respiration and related pathways powers most cellular work Heat energy

2 Catabolic Pathways and Production of The breakdown of organic molecules is exergonic Fermentation is a partial degradation of sugars that occurs without O Aerobic respiration consumes organic molecules and O and yields Anaerobic respiration is similar to aerobic respiration but consumes compounds other than O Cellular respiration includes both aerobic and anaerobic respiration but is often used to refer to aerobic respiration Although carbohydrates, fats, and proteins are all consumed as fuel, it is helpful to trace cellular respiration with the sugar glucose: C H O + O CO + H O + Energy ( + heat) Redox Reactions: Oxidation and Reduction The Principle of Redox The transfer of electrons during chemical reactions releases energy stored in organic molecules This released energy is ultimately used to synthesize Chemical reactions that transfer electrons between reactants are called oxidation-reduction reactions, or redox reactions In oxidation, a substance loses electrons, or is oxidized In reduction, a substance gains electrons, or is reduced (the amount of positive charge is reduced) Fig. 9-UN Fig. 9-UN becomes oxidized (loses electron) becomes oxidized becomes reduced (gains electron) becomes reduced

3 Fig. 9- The electron donor is called the reducing agent Reactants becomes oxidized Products The electron receptor is called the oxidizing agent becomes reduced Some redox reactions do not transfer electrons but change the electron sharing in covalent bonds An example is the reaction between methane and O Methane (reducing agent) Oxygen (oxidizing agent) Carbon dioxide Water Oxidation of Organic Fuel Molecules During Cellular Respiration Fig. 9-UN During cellular respiration, the fuel (such as glucose) is oxidized, and O is reduced: becomes oxidized becomes reduced Fig. 9-UN4 Dehydrogenase Stepwise Energy Harvest via and the Electron Transport Chain In cellular respiration, glucose and other organic molecules are broken down in a series of steps Electrons from organic compounds are usually first transferred to, a coenzyme As an electron acceptor, functions as an oxidizing agent during cellular respiration Each (the reduced form of ) represents stored energy that is tapped to synthesize

4 e + H + e Fig [H] Nicotinamide (oxidized form) Dehydrogenase Reduction of Oxidation of Nicotinamide (reduced form) + H + H + passes the electrons to the electron transport chain Unlike an uncontrolled reaction, the electron transport chain passes electrons in a series of steps instead of one explosive reaction O pulls electrons down the chain in an energyyielding tumble The energy yielded is used to regenerate Fig. 9-5 The Stages of Cellular Respiration: A Preview H + / O H / O (from food via ) Controlled release of H + + e energy for synthesis of Cellular respiration has three stages: (breaks down glucose into two molecules of pyruvate) Explosive release of heat and light energy The citric (completes the breakdown of glucose) / O Oxidative phosphorylation (accounts for most of the synthesis) (a) Uncontrolled reaction (b) Cellular respiration Fig. 9-- Fig. 9-- Electrons carried via Electrons carried via Electrons carried via and FADH Cytosol Cytosol Mitochondrion Substrate-level phosphorylation Substrate-level phosphorylation Substrate-level phosphorylation 4

5 Fig. 9-- Electrons carried via Electrons carried via and FADH Oxidative phosphorylation: electron transport and chemiosmosis The process that generates most of the is called oxidative phosphorylation because it is powered by redox reactions Cytosol Mitochondrion Substrate-level phosphorylation Substrate-level phosphorylation Oxidative phosphorylation BioFlix: Cellular Respiration Fig. 9-7 Oxidative phosphorylation accounts for almost 90% of the generated by cellular respiration A smaller amount of is formed in glycolysis and the citric by substrate-level phosphorylation P Substrate Enzyme Enzyme + Product Concept 9.: harvests chemical energy by oxidizing glucose to pyruvate ( splitting of sugar ) breaks down glucose into two molecules of pyruvate Fig. 9-8 Energy investment phase + P used occurs in the cytoplasm and has two major phases: Energy payoff phase P 4 formed Energy investment phase Energy payoff phase + 4 e + 4 H + + H + + H O Net + H O 4 formed used + 4 e + 4 H + + H + 5

6 Fig Fig Hexokinase Hexokinase --phosphate Hexokinase --phosphate Phosphoglucoisomerase Fructose--phosphate --phosphate Phosphoglucoisomerase --phosphate Fructose--phosphate Fig Fig Hexokinase Hexokinase Fructose--phosphate --phosphate --phosphate Phosphoglucoisomerase Fructose--phosphate Phosphofructokinase Phosphofructokinase Phosphoglucoisomerase Fructose--phosphate Phosphofructokinase Fructose-, -bisphosphate 4 Aldolase 5 Isomerase Fructose-, -bisphosphate Fructose-, -bisphosphate 4 Aldolase Fructose-, -bisphosphate 5 Isomerase Dihydroxyacetone phosphate Glyceraldehyde- -phosphate Dihydroxyacetone phosphate Glyceraldehyde- -phosphate Fig Fig H + Triose phosphate dehydrogenase P i Triose phosphate dehydrogenase P i + H +, -Bisphosphoglycerate, -Bisphosphoglycerate Glyceraldehyde- -phosphate Triose phosphate dehydrogenase P i + H + 7 Phosphoglycerokinase -Phosphoglycerate, -Bisphosphoglycerate 7 Phosphoglycerokinase, -Bisphosphoglycerate -Phosphoglycerate

7 Fig Fig Triose phosphate dehydrogenase P i + H + + H + Triose phosphate dehydrogenase P i, -Bisphosphoglycerate, -Bisphosphoglycerate 7 Phosphoglycerokinase 7 Phosphoglycerokinase -Phosphoglycerate 8 Phosphoglyceromutase -Phosphoglycerate -Phosphoglycerate 8 Phosphoglyceromutase -Phosphoglycerate 8 Phosphoglyceromutase -Phosphoglycerate 9 Enolase H O -Phosphoglycerate 9 Enolase H O Phosphoenolpyruvate -Phosphoglycerate Phosphoenolpyruvate Fig H + Triose phosphate dehydrogenase P i Concept 9.: The citric completes the energy-yielding oxidation of organic molecules, -Bisphosphoglycerate 7 Phosphoglycerokinase In the presence of O, pyruvate enters the mitochondrion -Phosphoglycerate 8 Phosphoglyceromutase Phosphoenolpyruvate 0 kinase Before the citric can begin, pyruvate must be converted to acetyl, which links the to glycolysis -Phosphoglycerate H O 9 Enolase Phosphoenolpyruvate 0 kinase Fig. 9-0 CYTOSOL Transport protein MITOCHONDRION CO Coenzyme A The citric, also called the Krebs, takes place within the mitochondrial matrix The oxidizes organic fuel derived from pyruvate, generating,, and FADH per turn 7

8 Fig. 9- FADH FAD CO + P i CO + H + The citric has eight steps, each catalyzed by a specific enzyme The acetyl group of acetyl joins the by combining with oxaloacetate, forming citrate The next seven steps decompose the citrate back to oxaloacetate, making the process a The and FADH produced by the relay electrons extracted from food to the electron transport chain Fig. 9-- Fig. 9-- H O Isocitrate Fig. 9-- Fig H O H O Isocitrate Isocitrate CO CO 4 α-ketoglutarate α-ketoglutarate CO Succinyl 8

9 Fig Fig. 9-- H O H O Isocitrate Isocitrate CO CO 4 Fumarate 4 α-ketoglutarate α-ketoglutarate Succinate 5 GTP GDP P i Succinyl CO FADH FAD Succinate 5 GTP GDP P i Succinyl CO Fig Fig H O +H + H O 8 H O 7 Malate Isocitrate CO H O 7 Malate Isocitrate CO Fumarate 4 Fumarate 4 α-ketoglutarate α-ketoglutarate FADH FAD 5 CO FADH FAD 5 CO Succinate GTP GDP P i Succinyl Succinate GTP GDP P i Succinyl Concept 9.4: During oxidative phosphorylation, chemiosmosis couples electron transport to synthesis Following glycolysis and the citric, and FADH account for most of the energy extracted from food These two electron carriers donate electrons to the electron transport chain, which powers synthesis via oxidative phosphorylation The Pathway of Electron Transport The electron transport chain is in the cristae of the mitochondrion Most of the chain s components are proteins, which exist in multiprotein complexes The carriers alternate reduced and oxidized states as they accept and donate electrons Electrons drop in free energy as they go down the chain and are finally passed to O, forming H O 9

10 Fig e FADH e FAD Multiprotein FMN Ι FAD complexes Fe S Fe S ΙΙ Q ΙΙΙ Cyt b Fe S Cyt c I Cyt c V Cyt a Cyt a Electrons are transferred from or FADH to the electron transport chain Electrons are passed through a number of proteins including cytochromes (each with an iron atom) to O 0 e (from or FADH ) 0 H + + / O H O The electron transport chain generates no The chain s function is to break the large freeenergy drop from food to O into smaller steps that release energy in manageable amounts Chemiosmosis: The Energy-Coupling Mechanism Fig. 9-4 INTERMEMBRANE SPACE Electron transfer in the electron transport chain causes proteins to pump H + from the mitochondrial matrix to the intermembrane space Rotor H + Stator H + then moves back across the membrane, passing through channels in synthase synthase uses the exergonic flow of H + to drive phosphorylation of This is an example of chemiosmosis, the use of energy in a H + gradient to drive cellular work Internal rod Catalytic knob + P i MITOCHONDRIAL MATRIX Fig. 9-5 EXPERIMENT Fig. 9-5a Magnetic bead Electromagnet Sample Internal rod Catalytic knob Nickel plate EXPERIMENT Magnetic bead RESULTS Number of photons detected ( 0 ) Rotation in one direction Rotation in opposite direction No rotation Electromagnet Sample Internal rod Catalytic knob Nickel plate 0 Sequential trials 0

11 Fig. 9-5b RESULTS Rotation in one direction Rotation in opposite direction No rotation The energy stored in a H + gradient across a membrane couples the redox reactions of the electron transport chain to synthesis The H + gradient is referred to as a protonmotive force, emphasizing its capacity to do work 0 Sequential trials Fig. 9- Protein complex of electron carriers Ι H + (carrying electrons from food) H + H Cyt c ΙV Q ΙΙΙ synthase ΙΙ H FADH + + / O H O FAD + P i H + Electron transport chain Chemiosmosis An Accounting of Production by Cellular Respiration During cellular respiration, most energy flows in this sequence: glucose electron transport chain proton-motive force About 40% of the energy in a glucose molecule is transferred to during cellular respiration, making about 8 Oxidative phosphorylation Fig. 9-7 CYTOSOL Electron shuttles span membrane or FADH FADH Acetyl about or 4 Maximum per glucose: About or 8 MITOCHONDRION Oxidative phosphorylation: electron transport and chemiosmosis Concept 9.5: Fermentation and anaerobic respiration enable cells to produce without the use of oxygen Most cellular respiration requires O to produce can produce with or without O (in aerobic or anaerobic conditions) In the absence of O, glycolysis couples with fermentation or anaerobic respiration to produce

12 + H + Types of Fermentation Anaerobic respiration uses an electron transport chain with an electron acceptor other than O, for example sulfate Fermentation uses phosphorylation instead of an electron transport chain to generate Fermentation consists of glycolysis plus reactions that regenerate, which can be reused by glycolysis Two common types are alcohol fermentation and lactic fermentation Fig P i In alcohol fermentation, pyruvate is converted to ethanol in two steps, with the first releasing CO + H + CO Alcohol fermentation by yeast is used in brewing, winemaking, and baking Ethanol Acetaldehyde (a) Alcohol fermentation + P i Animation: Fermentation Overview Lactate (b) Lactic fermentation Fig. 9-8a + P i Ethanol CO + H + Acetaldehyde In lactic fermentation, pyruvate is reduced to, forming lactate as an end product, with no release of CO Lactic fermentation by some fungi and bacteria is used to make cheese and yogurt Human muscle cells use lactic fermentation to generate when O is scarce (a) Alcohol fermentation

13 Fig. 9-8b + P i Fermentation and Aerobic Respiration Compared Lactate + H + Both processes use glycolysis to oxidize glucose and other organic fuels to pyruvate The processes have different final electron acceptors: an organic molecule (such as pyruvate or acetaldehyde) in fermentation and O in cellular respiration Cellular respiration produces 8 per glucose molecule; fermentation produces per glucose molecule (b) Lactic fermentation Fig. 9-9 Obligate anaerobes carry out fermentation or anaerobic respiration and cannot survive in the presence of O Yeast and many bacteria are facultative anaerobes, meaning that they can survive using either fermentation or cellular respiration In a facultative anaerobe, pyruvate is a fork in the metabolic road that leads to two alternative catabolic routes CYTOSOL No O present: Fermentation Ethanol or lactate O present: Aerobic cellular respiration MITOCHONDRION The Evolutionary Significance of occurs in nearly all organisms probably evolved in ancient prokaryotes before there was oxygen in the atmosphere Concept 9.: and the citric connect to many other metabolic pathways Gycolysis and the citric are major intersections to various catabolic and anabolic pathways

14 The Versatility of Catabolism Catabolic pathways funnel electrons from many kinds of organic molecules into cellular respiration accepts a wide range of carbohydrates Proteins must be digested to amino s; amino groups can feed glycolysis or the citric Fats are digested to glycerol (used in glycolysis) and fatty s (used in generating acetyl ) Fatty s are broken down by beta oxidation and yield acetyl An oxidized gram of fat produces more than twice as much as an oxidized gram of carbohydrate Fig. 9-0 Proteins Carbohydrates Fats Biosynthesis (Anabolic Pathways) Amino s Sugars Glycerol Fatty s The body uses small molecules to build other substances NH Glyceraldehyde-- P These small molecules may come directly from food, from glycolysis, or from the citric Oxidative phosphorylation Regulation of Cellular Respiration via Feedback Mechanisms Feedback inhibition is the most common mechanism for control Fig. 9- Inhibits Fructose--phosphate Phosphofructokinase Fructose-,-bisphosphate AMP Stimulates + Inhibits If concentration begins to drop, respiration speeds up; when there is plenty of, respiration slows down Control of catabolism is based mainly on regulating the activity of enzymes at strategic points in the catabolic pathway Oxidative phosphorylation 4

15 Fig. 9-UN5 Fig. 9-UN Inputs Outputs Inputs Outputs S C O + CH O C COO CH COO FADH Fig. 9-UN7 Fig. 9-UN8 INTER- MEMBRANE SPACE H + synthase + P i MITO- CHONDRIAL MATRIX H + Time Fig. 9-UN9 You should now be able to:. Explain in general terms how redox reactions are involved in energy exchanges. Name the three stages of cellular respiration; for each, state the region of the eukaryotic cell where it occurs and the products that result. In general terms, explain the role of the electron transport chain in cellular respiration 5

16 4. Explain where and how the respiratory electron transport chain creates a proton gradient 5. Distinguish between fermentation and anaerobic respiration. Distinguish between obligate and facultative anaerobes

Cellular Respiration: Harvesting Chemical Energy

Cellular Respiration: Harvesting Chemical Energy Chapter 9 Cellular Respiration: Harvesting Chemical Energy You should be able to: 1. Explain how redox reactions are involved in energy exchanges. Name and describe the three stages of cellular respiration;

More information

Cellular Respiration: Harvesting Chemical Energy

Cellular Respiration: Harvesting Chemical Energy Chapter 9 Cellular Respiration: Harvesting Chemical Energy PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with

More information

Cellular Respiration: Harvesting Chemical Energy

Cellular Respiration: Harvesting Chemical Energy Chapter 9 Cellular Respiration: Harvesting Chemical Energy Edited by Shawn Lester PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated

More information

BIOLOGY. Cellular Respiration and Fermentation CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson

BIOLOGY. Cellular Respiration and Fermentation CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson 9 Cellular Respiration and Fermentation Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick Figure 9.2 Light energy

More information

CH 7: Cell Respiration and Fermentation Overview. Concept 7.1: Catabolic pathways yield energy by oxidizing organic fuels

CH 7: Cell Respiration and Fermentation Overview. Concept 7.1: Catabolic pathways yield energy by oxidizing organic fuels CH 7: Cell Respiration and Fermentation Overview Living cells require energy from outside sources Some animals obtain energy by eating plants, and some animals feed on other organisms Energy flows into

More information

Campbell Biology 9. Chapter 9 Cellular Respiration and Fermentation. Chul-Su Yang, Ph.D., Lecture on General Biology 1

Campbell Biology 9. Chapter 9 Cellular Respiration and Fermentation. Chul-Su Yang, Ph.D., Lecture on General Biology 1 Lecture on General Biology 1 Campbell Biology 9 th edition Chapter 9 Cellular Respiration and Fermentation Chul-Su Yang, Ph.D., chulsuyang@hanyang.ac.kr Infection Biology Lab., Dept. of Molecular & Life

More information

Chapter 9. Cellular Respiration and Fermentation

Chapter 9. Cellular Respiration and Fermentation Chapter 9 Cellular Respiration and Fermentation Energy flows into an ecosystem as sunlight and leaves as heat Photosynthesis generates O 2 and organic molecules, which are used in cellular respiration

More information

Cellular Respiration and Fermentation

Cellular Respiration and Fermentation LECTURE PRESENTATIONS For CAMPBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson Chapter 9 Cellular Respiration and Fermentation

More information

Cellular Respiration and Fermentation

Cellular Respiration and Fermentation CAMPBELL BIOLOGY IN FOCUS URRY CAIN WASSERMAN MINORSKY REECE 7 Cellular Respiration and Fermentation Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge, Simon Fraser University SECOND EDITION

More information

7 Cellular Respiration and Fermentation

7 Cellular Respiration and Fermentation CAMPBELL BIOLOGY IN FOCUS Urry Cain Wasserman Minorsky Jackson Reece 7 Cellular Respiration and Fermentation Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge Overview: Life Is Work Living

More information

BIOLOGY. Cellular Respiration and Fermentation CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson

BIOLOGY. Cellular Respiration and Fermentation CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson 9 Cellular Respiration and Fermentation Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick Life Is Work Living cells

More information

Cellular Respiration and Fermentation

Cellular Respiration and Fermentation CAMPBELL BIOLOGY IN FOCUS URRY CAIN WASSERMAN MINORSKY REECE 7 Cellular Respiration and Fermentation Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge, Simon Fraser University SECOND EDITION

More information

7 Cellular Respiration and Fermentation

7 Cellular Respiration and Fermentation CAMPBELL BIOLOGY IN FOCUS Urry Cain Wasserman Minorsky Jackson Reece 7 Cellular Respiration and Fermentation Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge Overview: Life Is Work Living

More information

7 Cellular Respiration and Fermentation

7 Cellular Respiration and Fermentation CAMPBELL BIOLOGY IN FOCUS URRY CAIN WASSERMAN MINORSKY REECE 7 Cellular Respiration and Fermentation Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge, Simon Fraser University SECOND EDITION

More information

BIOLOGY. Cellular Respiration and Fermentation CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson

BIOLOGY. Cellular Respiration and Fermentation CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson 9 Cellular Respiration and Fermentation Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick Life Is Work Living cells

More information

Cellular Respiration and Fermentation

Cellular Respiration and Fermentation Chapter 9 LECTURE PRESENTATIONS For CAMPBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson Cellular Respiration and Fermentation

More information

Chapter 9. Cellular Respiration: Harvesting Chemical Energy

Chapter 9. Cellular Respiration: Harvesting Chemical Energy Chapter 9 Cellular Respiration: Harvesting Chemical Energy Living cells require energy from outside sources Energy flows into an ecosystem as sunlight and leaves as heat Photosynthesis generates O 2 and

More information

Cellular Respiration: Harvesting Chemical Energy

Cellular Respiration: Harvesting Chemical Energy Chapter 9 Cellular Respiration: Harvesting Chemical Energy PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with

More information

Chapter 9: Cellular Respiration Overview: Life Is Work. Living cells. Require transfusions of energy from outside sources to perform their many tasks

Chapter 9: Cellular Respiration Overview: Life Is Work. Living cells. Require transfusions of energy from outside sources to perform their many tasks Chapter 9: Cellular Respiration Overview: Life Is Work Living cells Require transfusions of energy from outside sources to perform their many tasks Biology, 7 th Edition Neil Campbell and Jane Reece The

More information

7 Cellular Respiration and Fermentation

7 Cellular Respiration and Fermentation CAMPBELL BIOLOGY IN FOCUS Urry Cain Wasserman Minorsky Jackson Reece 7 Cellular Respiration and Fermentation Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge Overview: Life Is Work Living

More information

Cellular Respiration and Fermentation

Cellular Respiration and Fermentation LECTURE PRESENTATIONS For CAMPBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson Chapter 9 Cellular Respiration and Fermentation

More information

BIOLOGY. Cellular Respiration and Fermentation. Concept 9.1: Catabolic pathways yield energy by oxidizing organic fuels

BIOLOGY. Cellular Respiration and Fermentation. Concept 9.1: Catabolic pathways yield energy by oxidizing organic fuels 9 Cellular Respiration and Fermentation CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson Energy flows into an ecosystem as sunlight and leaves as heat Photosynthesis generates

More information

BIOLOGY. Cellular Respiration and Fermentation CAMPBELL. Photosynthesis in chloroplasts. Light energy ECOSYSTEM. Organic molecules CO 2 + H 2 O

BIOLOGY. Cellular Respiration and Fermentation CAMPBELL. Photosynthesis in chloroplasts. Light energy ECOSYSTEM. Organic molecules CO 2 + H 2 O 9 Cellular Respiration and Fermentation CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick Figure 9.1 Figure 9.2

More information

Concept 9.1: Catabolic pathways yield energy by oxidizing organic fuels Several processes are central to cellular respiration and related pathways

Concept 9.1: Catabolic pathways yield energy by oxidizing organic fuels Several processes are central to cellular respiration and related pathways Overview: Life Is Work Living cells require energy from outside sources Some animals, such as the chimpanzee, obtain energy by eating plants, and some animals feed on other organisms that eat plants Energy

More information

Chapter 9 Cellular Respiration Overview: Life Is Work Living cells require energy from outside sources

Chapter 9 Cellular Respiration Overview: Life Is Work Living cells require energy from outside sources Chapter 9 Cellular Respiration Overview: Life Is Work Living cells require energy from outside sources Some animals, such as the giant panda, obtain energy by eating plants, and some animals feed on other

More information

Cellular Respiration: Harvesting Chemical Energy

Cellular Respiration: Harvesting Chemical Energy Chapter 9 Cellular Respiration: Harvesting Chemical Energy PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with

More information

Photosynthesis in chloroplasts. Cellular respiration in mitochondria ATP. ATP powers most cellular work

Photosynthesis in chloroplasts. Cellular respiration in mitochondria ATP. ATP powers most cellular work Light energy ECOSYSTEM CO + H O Photosynthesis in chloroplasts Cellular respiration in mitochondria Organic molecules + O powers most cellular work Heat energy 1 becomes oxidized (loses electron) becomes

More information

Cellular Respiration: Harvesting Chemical Energy

Cellular Respiration: Harvesting Chemical Energy Chapter 9 Cellular Respiration: Harvesting Chemical Energy PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with

More information

Cellular Respiration: Harvesting Chemical Energy

Cellular Respiration: Harvesting Chemical Energy Chapter 9 Cellular Respiration: Harvesting Chemical Energy PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with

More information

Chapter 10. Cellular Respiration Pearson Education Ltd

Chapter 10. Cellular Respiration Pearson Education Ltd Chapter 10 Cellular Respiration Life Is Work a) Living cells require energy from outside sources b) Some animals, such as the giraffe, obtain energy by eating plants, and some animals feed on other organisms

More information

7 Cellular Respiration and Fermentation

7 Cellular Respiration and Fermentation CAMPBELL BIOLOGY IN FOCUS URRY CAIN WASSERMAN MINORSKY REECE 7 Cellular Respiration and Fermentation Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge, Simon Fraser University SECOND EDITION

More information

Cellular Respiration: Harvesting Chemical Energy Chapter 9

Cellular Respiration: Harvesting Chemical Energy Chapter 9 Cellular Respiration: Harvesting Chemical Energy Chapter 9 Assemble polymers, pump substances across membranes, move and reproduce The giant panda Obtains energy for its cells by eating plants which get

More information

Photosynthesis in chloroplasts CO2 + H2O. Cellular respiration in mitochondria ATP. powers most cellular work. Heat energy

Photosynthesis in chloroplasts CO2 + H2O. Cellular respiration in mitochondria ATP. powers most cellular work. Heat energy Figure 9-01 LE 9-2 Light energy ECOSYSTEM Photosynthesis in chloroplasts CO2 + H2O Cellular respiration in mitochondria Organic + O molecules 2 powers most cellular work Heat energy LE 9-UN161a becomes

More information

Cellular Respiration: Harvesting Chemical Energy

Cellular Respiration: Harvesting Chemical Energy Chapter 9 Cellular Respiration: Harvesting Chemical Energy PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with

More information

10/25/2010 CHAPTER 9 CELLULAR RESPIRATION. Life is Work. Types of cellular respiration. Catabolic pathways = oxidizing fuels

10/25/2010 CHAPTER 9 CELLULAR RESPIRATION. Life is Work. Types of cellular respiration. Catabolic pathways = oxidizing fuels CHAPTER 9 CELLULAR RESPIRATION Life is Work Living cells require transfusions of energy from outside sources to perform their many tasks: Chemical work Transport work Mechanical work Energy stored in the

More information

respiration mitochondria mitochondria metabolic pathways reproduction can fuse or split DRP1 interacts with ER tubules chapter DRP1 ER tubule

respiration mitochondria mitochondria metabolic pathways reproduction can fuse or split DRP1 interacts with ER tubules chapter DRP1 ER tubule mitochondria respiration chapter 3-4 shape highly variable can fuse or split structure outer membrane inner membrane cristae intermembrane space mitochondrial matrix free ribosomes respiratory enzymes

More information

Chapter 9: Cellular Respiration

Chapter 9: Cellular Respiration Chapter 9: Cellular Respiration To perform their many tasks, living cells require energy from outside sources. Energy stored in food utimately comes from the sun. Photosynthesis makes the raw materials

More information

Ch. 9 Cellular Respira,on BIOL 222

Ch. 9 Cellular Respira,on BIOL 222 Ch. 9 Cellular Respira,on BIOL Energy Arrives as sunlight Photosynthesis Energy ECOSYSTEM Light energy Plants capture sunlight organic molecules and generates O Carbs used in cellular respira@on CO + H

More information

NOTES: Ch 9, part & Fermentation & Regulation of Cellular Respiration

NOTES: Ch 9, part & Fermentation & Regulation of Cellular Respiration NOTES: Ch 9, part 4-9.5 & 9.6 - Fermentation & Regulation of Cellular Respiration 9.5 - Fermentation enables some cells to produce ATP without the use of oxygen Cellular respiration requires O 2 to produce

More information

General Biology. Overview: Life is Work. 6. Cellular Respiration: Harvesting Chemical Energy. Energy

General Biology. Overview: Life is Work. 6. Cellular Respiration: Harvesting Chemical Energy. Energy ourse No: BNG003 redits: 3.00 General Biology verview: Life is Work Living cells require transfusions of energy from outside sources to perform their many tasks The giant panda obtains energy for its cells

More information

Ch. 9 Cellular Respira,on BIOL 222

Ch. 9 Cellular Respira,on BIOL 222 Ch. 9 Cellular Respira,on BIOL Energy Arrives as sunlight Photosynthesis Energy ECOSYSTEM Light energy Plants capture sunlight organic molecules and generates O Carbs used in cellular respira@on CO + H

More information

Ch. 9 Cell Respiration. Title: Oct 15 3:24 PM (1 of 53)

Ch. 9 Cell Respiration. Title: Oct 15 3:24 PM (1 of 53) Ch. 9 Cell Respiration Title: Oct 15 3:24 PM (1 of 53) Essential question: How do cells use stored chemical energy in organic molecules and to generate ATP? Title: Oct 15 3:28 PM (2 of 53) Title: Oct 19

More information

Cellular Respiration Part V: Oxidative Phosphorylation

Cellular Respiration Part V: Oxidative Phosphorylation Cellular Respiration Part V: Oxidative Phosphorylation Figure 9.16 Electron shuttles span membrane 2 NADH or 2 FADH 2 MITOCHONDRION 2 NADH 2 NADH 6 NADH 2 FADH 2 Glucose Glycolysis 2 Pyruvate Pyruvate

More information

Chemical Energy. Valencia College

Chemical Energy. Valencia College 9 Pathways that Harvest Chemical Energy Valencia College 9 Pathways that Harvest Chemical Energy Chapter objectives: How Does Glucose Oxidation Release Chemical Energy? What Are the Aerobic Pathways of

More information

Chapter 9 Notes. Cellular Respiration and Fermentation

Chapter 9 Notes. Cellular Respiration and Fermentation Chapter 9 Notes Cellular Respiration and Fermentation Objectives Distinguish between fermentation and anaerobic respiration. Name the three stages of cellular respiration and state the region of the cell

More information

Cellular Respiration. Overview of Cellular Respiration. Lecture 8 Fall Overview of Cellular Respiration. Overview of Cellular Respiration

Cellular Respiration. Overview of Cellular Respiration. Lecture 8 Fall Overview of Cellular Respiration. Overview of Cellular Respiration Overview of Cellular Respiration 1 Cellular Respiration Lecture 8 Fall 2008 All organisms need ATP to do cellular work Cellular Respiration: The conversion of chemical energy of carbon compounds into another

More information

ATP ATP. Cellular Respiration Harvesting Chemical Energy. The point is to make ATP!

ATP ATP. Cellular Respiration Harvesting Chemical Energy. The point is to make ATP! ellular Respiration Harvesting hemical Energy 1 The point is to make! 2 Harvesting stored energy Energy is stored in organic molecules carbohydrates, fats, proteins Heterotrophs eat these organic molecules

More information

Chapter 9 Cellular Respiration: Harvesting Chemical Energy Lecture Outline

Chapter 9 Cellular Respiration: Harvesting Chemical Energy Lecture Outline Chapter 9 Cellular Respiration: Harvesting Chemical Energy Lecture Outline Overview: Life Is Work To perform their many tasks, living cells require energy from outside sources. Energy enters most ecosystems

More information

Respiration. Organisms can be classified based on how they obtain energy: Autotrophs

Respiration. Organisms can be classified based on how they obtain energy: Autotrophs Respiration rganisms can be classified based on how they obtain energy: Autotrophs Able to produce their own organic molecules through photosynthesis Heterotrophs Live on organic compounds produced by

More information

CELLULAR RESPIRATION: HARVESTING CHEMICAL ENERGY. The Principles of Energy Harvest

CELLULAR RESPIRATION: HARVESTING CHEMICAL ENERGY. The Principles of Energy Harvest CELLULAR RESPIRATION: HARVESTING CHEMICAL ENERGY The Principles of Energy Harvest 1. Cellular respiration and fermentation are catabolic, energy-yielding pathways 2. Cells recycle the ATP they use for

More information

Lecture Outline Correlates with our Chapter 7

Lecture Outline Correlates with our Chapter 7 Chapter 9 Cellular Respiration: Harvesting Chemical Energy Lecture Outline Correlates with our Chapter 7 Overview: Life Is Work To perform their many tasks, living cells require energy from outside sources.

More information

ATP. Principles of Energy Harvest. Chapter 9~ The point is to make ATP! Cellular Respiration: Harvesting Chemical Energy. What s the point?

ATP. Principles of Energy Harvest. Chapter 9~ The point is to make ATP! Cellular Respiration: Harvesting Chemical Energy. What s the point? Chapter 9~ Cellular Respiration: Harvesting Chemical Energy What s the point? The point is to make! 2006-2007 Principles of Energy Harvest Catabolic pathway Fermentation Cellular Respiration C6H126 + 62

More information

Chapter 7 Cellular Respiration and Fermentation*

Chapter 7 Cellular Respiration and Fermentation* Chapter 7 Cellular Respiration and Fermentation* *Lecture notes are to be used as a study guide only and do not represent the comprehensive information you will need to know for the exams. Life Is Work

More information

Cellular Respiration: Harvesting Chemical Energy CHAPTER 9

Cellular Respiration: Harvesting Chemical Energy CHAPTER 9 Cellular Respiration: Harvesting Chemical Energy CHAPTER 9 9.1 Metabolic pathways that release energy are exergonic and considered catabolic pathways. Fermentation: partial degradation of sugars that occurs

More information

Cellular Respiration Stage 1: Glycolysis (Ch. 6)

Cellular Respiration Stage 1: Glycolysis (Ch. 6) Cellular Respiration Stage 1: Glycolysis (Ch. 6) What s the point? The point is to make! 2007-2008 Harvesting stored energy Energy is stored in organic molecules carbohydrates, fats, proteins Heterotrophs

More information

Cellular Pathways That Harvest Chemical Energy. Cellular Pathways That Harvest Chemical Energy. Cellular Pathways In General

Cellular Pathways That Harvest Chemical Energy. Cellular Pathways That Harvest Chemical Energy. Cellular Pathways In General Cellular Pathways That Harvest Chemical Energy A. Obtaining Energy and Electrons from Glucose Lecture Series 12 Cellular Pathways That Harvest Chemical Energy B. An Overview: Releasing Energy from Glucose

More information

NOTES: Ch 9 Cellular Respiration: Harvesting Chemical Energy Part 1: The Overview

NOTES: Ch 9 Cellular Respiration: Harvesting Chemical Energy Part 1: The Overview NOTES: Ch 9 Cellular Respiration: Harvesting Chemical Energy Part 1: The Overview Overview: Life Is Work Living cells require energy from outside sources Some animals, such as the giant panda, obtain energy

More information

General Biology. Overview: Life is Work. Energy. flows into an ecosystem as sunlight and leaves it as heat. Examples of RedOx reactions.

General Biology. Overview: Life is Work. Energy. flows into an ecosystem as sunlight and leaves it as heat. Examples of RedOx reactions. ourse o: BG00" redits:.00 " General Biology " " 6. ellular Respiration: arvesting hemical Energy verview: Life is Work Living cells require transfusions of energy from outside sources to perform their

More information

What s the point? The point is to make ATP! ATP

What s the point? The point is to make ATP! ATP ATP Chapter 8 What s the point? The point is to make ATP! ATP Flows into an ecosystem as sunlight and leaves as heat Energy is stored in organic compounds Carbohydrates, lipids, proteins Heterotrophs eat

More information

MULTIPLE CHOICE QUESTIONS

MULTIPLE CHOICE QUESTIONS MULTIPLE CHOICE QUESTIONS 1. Which of the following statements concerning anabolic reactions is FALSE? A. They are generally endergonic. B. They usually require ATP. C. They are part of metabolism. D.

More information

Chapter 6. How Cells Harvest Chemical Energy. Lecture by Richard L. Myers

Chapter 6. How Cells Harvest Chemical Energy. Lecture by Richard L. Myers Chapter 6 How Cells Harvest Chemical Energy oweroint Lectures for Biology: Concepts & Connections, Sixth Edition Campbell, Reece, Taylor, Simon, and Dickey Copyright 2009 earson Education, Inc. Lecture

More information

Harvesting energy: photosynthesis & cellular respiration

Harvesting energy: photosynthesis & cellular respiration Harvesting energy: photosynthesis & cellular respiration Learning Objectives Know the relationship between photosynthesis & cellular respiration Know the formulae of the chemical reactions for photosynthesis

More information

Introduction. Living is work. To perform their many tasks, cells must bring in energy from outside sources.

Introduction. Living is work. To perform their many tasks, cells must bring in energy from outside sources. Introduction Living is work. To perform their many tasks, cells must bring in energy from outside sources. In most ecosystems, energy enters as sunlight. Light energy trapped in organic molecules is available

More information

This is an example outline of 3 lectures in BSC (Thanks to Dr. Ellington for sharing this information.)

This is an example outline of 3 lectures in BSC (Thanks to Dr. Ellington for sharing this information.) This is an example outline of 3 lectures in BSC 2010. (Thanks to Dr. Ellington for sharing this information.) Topic 10: CELLULAR RESPIRATION (lectures 14-16) OBJECTIVES: 1. Know the basic reactions that

More information

III. 6. Test. Respiració cel lular

III. 6. Test. Respiració cel lular III. 6. Test. Respiració cel lular Chapter Questions 1) What is the term for metabolic pathways that release stored energy by breaking down complex molecules? A) anabolic pathways B) catabolic pathways

More information

Ch 9: Cellular Respiration

Ch 9: Cellular Respiration Ch 9: Cellular Respiration Cellular Respiration An overview Exergonic reactions and catabolic pathway Energy stored in bonds of food molecules is transferred to ATP Cellular respiration provides the energy

More information

BIOLOGY 101. CHAPTER 9: Cellular Respiration - Fermentation: Life is Work

BIOLOGY 101. CHAPTER 9: Cellular Respiration - Fermentation: Life is Work BIOLOGY 101 CHAPTER 9: Cellular Respiration - Fermentation: Life is Work An Introduction to Metabolism: Energy of Life 8.3 ATP powers cellular work by coupling exergonic reactions to endergonic reactions

More information

Section B: The Process of Cellular Respiration

Section B: The Process of Cellular Respiration CHAPTER 9 CELLULAR RESPIRATION: HARVESTING CHEMICAL ENERGY Section B: The Process of Cellular Respiration 1. Respiration involves glycolysis, the Krebs cycle, and electron transport: an overview 2. Glycolysis

More information

Metabolism. Metabolism. Energy. Metabolism. Energy. Energy 5/22/2016

Metabolism. Metabolism. Energy. Metabolism. Energy. Energy 5/22/2016 5//016 Metabolism Metabolism All the biochemical reactions occurring in the body Generating, storing and expending energy ATP Supports body activities Assists in constructing new tissue Metabolism Two

More information

4. Which step shows a split of one molecule into two smaller molecules? a. 2. d. 5

4. Which step shows a split of one molecule into two smaller molecules? a. 2. d. 5 1. Which of the following statements about NAD + is false? a. NAD + is reduced to NADH during both glycolysis and the citric acid cycle. b. NAD + has more chemical energy than NADH. c. NAD + is reduced

More information

Structure of the Mitochondrion. Cell Respiration. Cellular Respiration. Catabolic Pathways. Photosynthesis vs. Cell Respiration ATP 10/14/2014

Structure of the Mitochondrion. Cell Respiration. Cellular Respiration. Catabolic Pathways. Photosynthesis vs. Cell Respiration ATP 10/14/2014 Structure of the Mitochondrion Cellular Respiration Chapter 9 Pgs. 163 183 Enclosed by a double membrane Outer membrane is smooth Inner, or cristae, membrane is folded - this divides the mitochondrion

More information

Chapter 9 Cellular Respiration and Fermentation

Chapter 9 Cellular Respiration and Fermentation Chapter 9 Cellular Respiration and Fermentation Lecture Outline Overview: Life Is Work To perform their many tasks, living cells require energy from outside sources. Energy enters most ecosystems as sunlight

More information

Cellular Respiration. Biochemistry Part II 4/28/2014 1

Cellular Respiration. Biochemistry Part II 4/28/2014 1 Cellular Respiration Biochemistry Part II 4/28/2014 1 4/28/2014 2 The Mitochondria The mitochondria is a double membrane organelle Two membranes Outer membrane Inter membrane space Inner membrane Location

More information

AP BIOLOGY Chapter 7 Cellular Respiration =

AP BIOLOGY Chapter 7 Cellular Respiration = 1 AP BIOLOGY Chapter 7 Cellular Respiration = Day 1 p. I. Overview A. Cellular Respiration 1. Respiration breathing, exchange of O 2 for CO 2 2. Cellular respiration aerobic harvesting of energy from food

More information

Cellular Respiration: Harvesting Chemical Energy

Cellular Respiration: Harvesting Chemical Energy Chapter 9 Cellular Respiration: Harvesting Chemical Energy Lecture Outline Overview: Life Is Work To perform their many tasks, living cells require energy from outside sources. Energy enters most ecosystems

More information

How Cells Harvest Chemical Energy

How Cells Harvest Chemical Energy How Cells Harvest Chemical Energy Chapter 6 Introduction: How Is a Marathoner Different from a Sprinter? Individuals inherit various percentages of the two main types of muscle fibers, slow and fast The

More information

Notes CELLULAR RESPIRATION SUMMARY EQUATION C 6 H 12 O 6 + O 2. 6CO 2 + 6H 2 O + energy (ATP) STEPWISE REDOX REACTION

Notes CELLULAR RESPIRATION SUMMARY EQUATION C 6 H 12 O 6 + O 2. 6CO 2 + 6H 2 O + energy (ATP) STEPWISE REDOX REACTION AP BIOLOGY CELLULAR ENERGETICS ACTIVITY #2 Notes NAME DATE HOUR SUMMARY EQUATION CELLULAR RESPIRATION C 6 H 12 O 6 + O 2 6CO 2 + 6H 2 O + energy (ATP) STEPWISE REDOX REACTION Oxidation: partial or complete

More information

Chapter 6 How Cells Harvest Chemical Energy

Chapter 6 How Cells Harvest Chemical Energy Introduction Chapter 6 How Cells Harvest Chemical Energy oweroint Lectures for Campbell Biology: Concepts & Connections, Seventh Edition Reece, Taylor, Simon, and Dickey Lecture by Edward J. Zalisko In

More information

Respiration. Respiration. Respiration. How Cells Harvest Energy. Chapter 7

Respiration. Respiration. Respiration. How Cells Harvest Energy. Chapter 7 How Cells Harvest Energy Chapter 7 Organisms can be classified based on how they obtain energy: autotrophs: are able to produce their own organic molecules through photosynthesis heterotrophs: live on

More information

CELLULAR RESPIRATION SUMMARY EQUATION. C 6 H 12 O 6 + O 2 6CO2 + 6H 2 O + energy (ATP) STEPWISE REDOX REACTION

CELLULAR RESPIRATION SUMMARY EQUATION. C 6 H 12 O 6 + O 2 6CO2 + 6H 2 O + energy (ATP) STEPWISE REDOX REACTION CELLULAR RESPIRATION SUMMARY EQUATION C 6 H 12 O 6 + O 2 6CO2 + 6H 2 O + energy (ATP) STEPWISE REDOX REACTION Oxidation: partial or complete loss of electrons Reduction: partial or complete gain of electrons

More information

BIOLOGY - CLUTCH CH.9 - RESPIRATION.

BIOLOGY - CLUTCH CH.9 - RESPIRATION. !! www.clutchprep.com CONCEPT: REDOX REACTIONS Redox reaction a chemical reaction that involves the transfer of electrons from one atom to another Oxidation loss of electrons Reduction gain of electrons

More information

How Cells Harvest Chemical Energy

How Cells Harvest Chemical Energy Chapter 6 How Cells Harvest Chemical Energy INTRODUCTION TO CELLULAR RESIRATION hotosynthesis and cellular respiration provide energy for life Cellular respiration makes and consumes O During the oxidation

More information

How Cells Harvest Energy. Chapter 7. Respiration

How Cells Harvest Energy. Chapter 7. Respiration How Cells Harvest Energy Chapter 7 Respiration Organisms classified on how they obtain energy: autotrophs: produce their own organic molecules through photosynthesis heterotrophs: live on organic compounds

More information

Cellular Respiration Stage 1: (Glycolysis) AP Biology

Cellular Respiration Stage 1: (Glycolysis) AP Biology Cellular Respiration Stage 1: (Glycolysis) What s the point? The point is to make! Glycolysis: Breaking down glucose glyco lysis (splitting sugar) glucose pyruvate 6C 2x 3C In the cytosol? Why does that

More information

Cellular Respiration: Obtaining Energy from Food

Cellular Respiration: Obtaining Energy from Food Chapter 6 Cellular Respiration: Obtaining Energy from Food Lectures by Chris C. Romero, updated by Edward J. Zalisko PowerPoint Lectures for Campbell Essential Biology, Fourth Edition Eric Simon, Jane

More information

Notes CELLULAR RESPIRATION SUMMARY EQUATION C 6 H 12 O 6 + O 2. 6CO 2 + 6H 2 O + energy (ATP) STEPWISE REDOX REACTION

Notes CELLULAR RESPIRATION SUMMARY EQUATION C 6 H 12 O 6 + O 2. 6CO 2 + 6H 2 O + energy (ATP) STEPWISE REDOX REACTION AP BIOLOGY CELLULAR ENERGETICS ACTIVITY #2 Notes NAME DATE HOUR SUMMARY EQUATION CELLULAR RESPIRATION C 6 H 12 O 6 + O 2 6CO 2 + 6H 2 O + energy (ATP) STEPWISE REDOX REACTION Oxidation: partial or complete

More information

Cellular Respiration Harvesting Chemical Energy ATP

Cellular Respiration Harvesting Chemical Energy ATP Cellular Respiration Harvesting Chemical Energy ATP 2006-2007 What s the point? The point is to make ATP! ATP 2006-2007 Harvesting stored energy Energy is stored in organic molecules carbohydrates, fats,

More information

Aerobic Respiration. The four stages in the breakdown of glucose

Aerobic Respiration. The four stages in the breakdown of glucose Aerobic Respiration The four stages in the breakdown of glucose 1 I. Aerobic Respiration Why can t we break down Glucose in one step? (Flaming Gummy Bear) Enzymes gently lower the potential energy until

More information

Cellular Respiration Harvesting Chemical Energy ATP

Cellular Respiration Harvesting Chemical Energy ATP Cellular Respiration Harvesting Chemical Energy ATP 2006-2007 What s the point? The point is to make ATP! ATP 2006-2007 Harvesting stored energy Energy is stored in organic molecules carbohydrates, fats,

More information

Harvesting energy: photosynthesis & cellular respiration part 1I

Harvesting energy: photosynthesis & cellular respiration part 1I Harvesting energy: photosynthesis & cellular respiration part 1I Agenda I. Overview (Big Pictures) of Photosynthesis & Cellular Respiration II. Making Glucose - Photosynthesis III. Making ATP - Cellular

More information

7 Pathways That Harvest Chemical Energy

7 Pathways That Harvest Chemical Energy 7 Pathways That Harvest Chemical Energy Pathways That Harvest Chemical Energy How Does Glucose Oxidation Release Chemical Energy? What Are the Aerobic Pathways of Glucose Metabolism? How Is Energy Harvested

More information

Yield of energy from glucose

Yield of energy from glucose Paper : Module : 05 Yield of Energy from Glucose Principal Investigator, Paper Coordinator and Content Writer Prof. Ramesh Kothari, Professor Dept. of Biosciences, Saurashtra University, Rajkot - 360005

More information

Respiration. Respiration. How Cells Harvest Energy. Chapter 7

Respiration. Respiration. How Cells Harvest Energy. Chapter 7 How Cells Harvest Energy Chapter 7 Respiration Organisms can be classified based on how they obtain energy: autotrophs: are able to produce their own organic molecules through photosynthesis heterotrophs:

More information

Reading Assignments. A. Energy and Energy Conversions. Lecture Series 9 Cellular Pathways That Harvest Chemical Energy. gasoline) or elevated mass.

Reading Assignments. A. Energy and Energy Conversions. Lecture Series 9 Cellular Pathways That Harvest Chemical Energy. gasoline) or elevated mass. Lecture Series 9 Cellular Pathways That Harvest Chemical Energy Reading Assignments Review Chapter 3 Energy, Catalysis, & Biosynthesis Read Chapter 13 How Cells obtain Energy from Food Read Chapter 14

More information

Cellular Respiration. Unit 5: Plants, Photosynthesis, and Cellular Respiration

Cellular Respiration. Unit 5: Plants, Photosynthesis, and Cellular Respiration Cellular Respiration Unit 5: Plants, Photosynthesis, and Cellular Respiration Overview! Organisms obtain energy (ATP) by breaking down (catabolic pathway, exergonic reaction) organic molecules (glucose)

More information

Cellular Respiration: Obtaining Energy from Food

Cellular Respiration: Obtaining Energy from Food Chapter 6 Cellular Respiration: Obtaining Energy from Food PowerPoint Lectures for Campbell Essential Biology, Fourth Edition Eric Simon, Jane Reece, and Jean Dickey Campbell Essential Biology with Physiology,

More information

3.2 Aerobic Respiration

3.2 Aerobic Respiration 3.2 Aerobic Respiration Aerobic Cellular Respiration Catabolic pathways Breaks down energy-rich compounds to make ATP Requires oxygen Occurs in different parts of the cell C 6 H 12 O 6 (s) + 6O 2 (g) 6CO

More information

3.7.1 Define cell respiration [Cell respiration is the controlled release of energy from organic compounds in cells to form ATP]

3.7.1 Define cell respiration [Cell respiration is the controlled release of energy from organic compounds in cells to form ATP] 3.7 Cell respiration ( Chapter 9 in Campbell's book) 3.7.1 Define cell respiration [Cell respiration is the controlled release of energy from organic compounds in cells to form ATP] Organic compounds store

More information

Respiration in Plants

Respiration in Plants Respiration in Plants Very Short Answers Questions: 1. Different substrates get oxidized during respiration. How does respiratory quotient (RQ) indicate which type of substrate i.e. carbohydrate, fat or

More information

2) The molecule that functions as the reducing agent (electron donor) in a redox or oxidationreduction

2) The molecule that functions as the reducing agent (electron donor) in a redox or oxidationreduction Campbell Biology in Focus (Urry) Chapter 7 Cellular Respiration and Fermentation 7.1 Multiple-Choice Questions 1) What is the term for metabolic pathways that release stored energy by breaking down complex

More information