Cellular Respiration: Harvesting Chemical Energy Chapter 9

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Cellular Respiration: Harvesting Chemical Energy Chapter 9"

Transcription

1 Cellular Respiration: Harvesting Chemical Energy Chapter 9

2 Assemble polymers, pump substances across membranes, move and reproduce

3 The giant panda Obtains energy for its cells by eating plants which get their energy from the sun (sun in, heat out) Figure 9.1

4 Energy Flows into an ecosystem as sunlight and leaves as heat Light energy ECOSYSTEM CO 2 + H 2 O Photosynthesis in chloroplasts Cellular respiration in mitochondria Organic molecules + O 2 ATP powers most cellular work Figure 9.2 Heat energy

5 Catabolic pathways yield energy by oxidizing organic fuels The breakdown of organic molecules is exergonic Release of energy by the transfer of e-

6 Organic molecules possess PE due to atom arrangements Compounds participating in exergonic reactions act as fuels Enzymes help degrade molecules to release PE

7 One catabolic process, fermentation Is a partial degradation of sugars that occurs without oxygen

8 Cellular respiration Is the most prevalent and efficient catabolic pathway Consumes oxygen and organic molecules such as glucose Yields ATP Aerobic Anaerobic (bacteria)

9 To keep working Cells must regenerate ATP C 6 H 12 O 6 +6O 2 6CO 2 + 6H 2 O + Energy (ATP +heat)

10 Catabolic pathways yield energy Due to the transfer of electrons

11 Redox reactions Transfer electrons from one reactant to another by oxidation and reduction

12 In oxidation A substance loses electrons, or is oxidized In reduction A substance gains electrons, or is reduced

13 Examples of redox reactions becomes oxidized (loses electron) Na + Cl Na + + Cl becomes reduced (gains electron)

14 Some redox reactions Do not completely exchange electrons Change the degree of electron sharing in covalent bonds Reactants Products becomes oxidized CH 4 + 2O 2 CO 2 + Energy + 2 H 2 O H becomes reduced C O O O C O O H H H H H Figure 9.3 Methane (reducing agent) Oxygen (oxidizing agent) Carbon dioxide Water

15 Oxidation of Organic Fuel Molecules During Cellular Respiration During cellular respiration Glucose is oxidized and oxygen is reduced becomes oxidized C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + Energy becomes reduced Reducing Agent is the electron donor (sugar) Oxidizing Agent is the electron acceptor (oxygen) Copyright 2005 Pearson Education, Inc. publishing as Benjamin Cummings

16 Breaking down of Sugar (Redox Reactions) Key Players Dehydrogenase (enzyme strips H atoms) NAD+ (coenzyme used to shuttle e-) Copyright 2005 Pearson Education, Inc. publishing as Benjamin Cummings

17 The Players Dehydrogenase removes a pair of H atoms (2 e-, 2 p) from glucose thus oxidizing it. Dehydrogenase delivers 2e- and 1 p to NAD+ and the other proton is releases as H+ ion. NAD+ is now NADH (stores energy for later use) Copyright 2005 Pearson Education, Inc. publishing as Benjamin Cummings

18 How do you get energy from NADH? ETC e- carry molecules in inner membrane of mitochondria e- move down from one carrier to another through REDOX reactions At the bottom, oxygen captures the e- with hydrogen to form water Copyright 2005 Pearson Education, Inc. publishing as Benjamin Cummings

19 Stepwise Energy Harvest via NAD + and the Electron Transport Chain Cellular respiration Oxidizes glucose in a series of steps Steps slow the reaction and allow the controlled release of energy that can be used instead of a massive loss Copyright 2005 Pearson Education, Inc. publishing as Benjamin Cummings

20 Electrons from organic compounds Are usually first transferred to NAD +, a coenzyme 2 e + 2 H + NAD + 2 e + H + NADH O O P O O O O P O CH 2 H O HO HO CH 2 H O H N + H OH N N O C NH 2 Nicotinamide (oxidized form) NH 2 N N H + 2[H] (from food) Dehydrogenase Reduction of NAD + Oxidation of NADH H N H O C + NH 2 Nicotinamide (reduced form) H HO H OH Figure 9.4

21 NADH, the reduced form of NAD + Passes the electrons to the electron transport chain

22 If electron transfer is not stepwise A large release of energy occurs As in the reaction of hydrogen and oxygen to form water H / 2 O 2 Free energy, G Explosive release of heat and light energy (a) Uncontrolled reaction Figure 9.5 A H 2 O

23 The electron transport chain Passes electrons in a series of steps instead of in one explosive reaction Uses the energy from the electron transfer to form ATP

24 2 H + 1 / 2 O 2 (from food via NADH) Free energy, G 2 H e Controlled release of energy for synthesis of ATP ATP ATP ATP 2 e 2 H + 1 / 2 O 2 H 2 O Figure 9.5 B (b) Cellular respiration

25 Respiration is a cumulative function of three metabolic stages Glycolysis The citric acid cycle Oxidative phosphorylation

26 Glycolysis Occurs in the cytosol Breaks down glucose into two molecules of pyruvate The citric acid cycle (Krebs) Occurs in the mitochondria Completes the breakdown of glucose Releases CO 2 Makes e- available for MASS production of ATP

27 Oxidative phosphorylation Occurs in the mitochondra Is driven by the electron transport chain Generates ATP

28 An overview of cellular respiration Electrons carried via NADH Electrons carried via NADH and FADH2 Glycolsis Glucose Pyruvate Citric acid cycle Oxidative phosphorylation: electron transport and chemiosmosis Cytosol Mitochondrion ATP ATP ATP Figure 9.6 Substrate-level phosphorylation Substrate-level phosphorylation Oxidative phosphorylation

29 Both glycolysis and the citric acid cycle Can generate ATP by substrate-level phosphorylation Enzyme Enzyme ADP Substrate P + ATP Figure 9.7 Product

30 Glycolysis harvests energy by oxidizing glucose to pyruvate Glycolysis Means splitting of sugar Breaks down glucose into pyruvate Occurs in the cytoplasm of the cell

31 Glycolysis consists of two major phases Energy investment phase Energy payoff phase Glycolysis Citric acid cycle Oxidative phosphorylation ATP ATP ATP Energy investment phase Glucose 2 ATP + 2 P 2 ATP used Energy payoff phase 4 ADP + 4 P 4 ATP formed 2 NAD e H + 2 NADH + 2 H + 2 Pyruvate + 2 H 2 O Glucose 2 Pyruvate + 2 H 2 O 4 ATP formed 2 ATP used 2 ATP + 2 H + Figure NAD e + 4 H + 2 NADH

32 A closer look at the energy investment phase

33 CH 2 OH H H H H HO HO OH H OH Glucose Glycolysis Citric acid Oxidative cycle phosphorylation ATP ADP Hexokinase CH 2 OH P H O H H H HO OH H OH Glucose-6-phosphate 2 Phosphoglucoisomerase CH 2 O P O CH 2 OH H HO H HO HO H Fructose-6-phosphate ATP ADP 3 Phosphofructokinase P O CH 2 O CH 2 O P HO H HO H OH Fructose- 1, 6-bisphosphate 4 Aldolase 1 Figure 9.9 A P O CH 2 C O CH 2 OH Dihydroxyacetone phosphate 5 Isomerase H C O CHOH CH 2 O P Glyceraldehyde- 3-phosphate

34 A closer look at the energy payoff phase

35 2 NAD + 2 NADH + 2 H + 6 Triose phosphate dehydrogenase 2 P i 2 P O C O CHOH CH 2 O P 1, 3-Bisphosphoglycerate 2 ADP 7 Phosphoglycerokinase 2 ATP 2 O C CHOH CH 2 O P 3-Phosphoglycerate 8 Phosphoglyceromutase O 2 C O H C O P CH 2 OH 2-Phosphoglycerate 9 2 H 2 O Enolase 2 O C O C O P CH 2 Phosphoenolpyruvate 2 ADP 10 Pyruvate kinase 2 ATP Figure 9.8 B 2 O C O C O CH 3 Pyruvate

36 2 ATP 2NADH

37 The citric acid cycle completes the energy-yielding oxidation of organic molecules The citric acid cycle Takes place in the matrix of the mitochondrion Active transport takes pyruvate into the mitochondria

38 Before the citric acid cycle can begin Pyruvate must first be converted to acetyl CoA, which links the cycle to glycolysis CYTOSOL MITOCHONDRION O C C O O NAD + 2 NADH + H + S C CoA O 1 3 CH 3 CH 3 Acetyle CoA Pyruvate CO 2 Coenzyme A Transport protein Figure 9.10

39 C atom of carboxyl group removed and released as CO 2 Remaining 2 C compound is oxidized to form CYTOSOL acetate and NAD+=NADH O C C O O Coenzyme A attaches to acetate=acetyl coa which has a high PE NAD + 2 NAD H MITOCHONDRI ON + H + S C Co A O CH 3 Pyruvate 1 CO 2 Coenzyme A 3 CH 3 Acetyle CoA Figure 9.10 Transport protein

40 Generation of Acetyl coa makes: 1 NADH for each pyruvate 2 NADH have now been made

41 An overview of the citric acid cycle Pyruvate (from glycolysis, 2 molecules per glucose) Glycolysis Citric acid cycle Oxidative phosphorylatio n ATP ATP ATP CO 2 NADH + 3 H + Acetyle CoA CoA CoA CoA FADH 2 FAD Citric acid cycle ADP + P i 2 CO 2 3 NAD + 3 NADH + 3 H + Figure 9.11 ATP

42 A closer look at the citric acid cycle

43 Glycolysis Citric acid cycle Oxidative phosphorylation S C CoA O CH 3 Acetyl CoA CoA SH H 2 O NAD + HO FADH 2 NADH + H + CH 2 1 COO H 2 O COO CH CH 2 COO 7 COO CH HC COO Malate Oxaloacetate Fumarate FAD 8 6 Succinate O C COO COO CH 2 CH 2 COO ADP COO Figure 9.12 Citric acid cycle CoA SH 5 GTP GDP P i Citrate S CH 2 HO C COO CH 2 COO CH 2 COO CH 2 C O CoA Succinyl CoA 2 CoA SH 4 NAD + HO NADH + H + COO CH 2 HC COO CH COO Isocitrate 3 COO CH 2 CH 2 C O COO NAD + NADH α-ketoglutarate CO 2 CO 2 + H + Figure 9.12 ATP

44 One cycle produces 3 NADH, 1 FADH 2 and 1 ATP GO AROUND TWICE!!!! So that is a total of: 6 NADH, 2 FADH 2 and 2 ATP

45 Made of two parts: ETC Chemiosmosis

46 Collection of molecules embedded in inner membrane of mitocondria In the electron transport chain Electrons from NADH and FADH 2 lose energy in several steps

47 At the end of the chain Electrons are passed to oxygen, forming water NO ATP is made but e- energy becomes manageable 50 NADH FADH2 Free energy (G) relative to O 2 (kcl/mol) FMN I Fe S FAD Fe S II O III Cyt b Fe S Multiprotein complexes Cyt c 1 Cyt c IV Cyt a Cyt a H O 2 Figure 9.13 H 2 O

48 Energy coupling mechanism Energy is stored in H+ gradient across a membrane It is used to drive the production of ATP ATPase is needed

49 ATP synthase Is the enzyme that actually makes ATP INTERMEMBRANE SPACE H + H + H + H + H + H + H + A rotor within the membrane spins clockwise when H + flows past it down the H + gradient. A stator anchored in the membrane holds the knob stationary. H + A rod (for stalk ) extending into the knob also spins, activating catalytic sites in the knob. Figure 9.14 ADP + P i MITOCHONDRIAL MATRIX ATP Three catalytic sites in the stationary knob join inorganic Phosphate to ADP to make ATP.

50 At certain steps along the electron transport chain Electron transfer causes protein complexes to pump H + from the mitochondrial matrix to the intermembrane space

51 The resulting H + gradient Stores energy Drives chemiosmosis in ATP synthase Is referred to as a proton-motive force

52 Chemiosmosis and the electron transport chain Glycolysis Oxidative phosphorylation. electron transport and chemiosmosis Inner Mitochondrial membrane ATP ATP ATP H + H + Intermembrane space Protein complex of electron carners H + Q Cyt c IV H + Inner mitochondrial membrane Mitochondrial matrix Figure 9.15 NADH + I II FADH 2 NAD + (Carrying electrons from, food) Electron transport chain Electron transport and pumping of protons (H + ), which create an H + gradient across the membrane III FAD + 2 H / 2 O 2 H 2 O Oxidative phosphorylation ADP + P i H + ATP Chemiosmosis ATP synthesis powered by the flow Of H + back across the membrane ATP synthase

53 Net production of ATP

54 An Accounting of ATP Production by Cellular Respiration During respiration, most energy flows in this sequence Glucose to NADH to electron transport chain to proton-motive force to ATP Copyright 2005 Pearson Education, Inc. publishing as Benjamin Cummings

55 There are three main processes in this metabolic enterprise CYTOSOL Electron shuttles span membrane 2 NADH or MITOCHONDRION 2 FADH 2 2 NADH 2 NADH 6 NADH 2 FADH 2 Glycolysis 2 Glucose Pyruvate 2 Acetyl CoA Citric acid cycle Oxidative phosphorylation: electron transport and chemiosmosis + 2 ATP + 2 ATP + about 32 or 34 ATP by substrate-level phosphorylation by substrate-level phosphorylation by oxidative phosphorylation, depending on which shuttle transports electrons from NADH in cytosol Maximum per glucose: About 36 or 38 ATP Figure 9.16

56 Fermentation enables some cells to produce ATP without the use of oxygen Cellular respiration Relies on oxygen to produce ATP In the absence of oxygen Cells can still produce a small amount of ATP through fermentation

57 Glycolysis Can produce ATP with or without oxygen, in aerobic or anaerobic conditions It is the ETC that requires oxygen (without it the e- are not pulled down the series of proteins and chemiosmosis fails) Glycolysis can couple with fermentation to produce ATP

58 Fermentation consists of: Glycolysis plus reactions that regenerate NAD +, which can be reused by glyocolysis

59 During lactic acid fermentation Pyruvate is reduced directly to NADH to form lactate as a waste product NAD+ is now free to accept e- and make 2 ATP from remaining sugar molecule (s) Lactate accumulates in muscles=sore and fatigued

60 In alcohol fermentation Pyruvate is converted to ethanol in two steps, one of which releases CO 2

61 2 ADP + 2 P 1 2 ATP Glucose Glycolysis 2 NAD + 2 NADH O O C C O CH 3 2 Pyruvate 2 CO 2 H H C OH H C O CH 3 2 Ethanol (a) Alcohol fermentation CH 3 2 Acetaldehyde 2 ADP + 2 P 1 2 ATP Glucose Glycolysis O 2 NAD + 2 NADH C O H C OH O C O C O CH 3 Figure 9.17 CH 3 2 Lactate (b) Lactic acid fermentation

62 Both fermentation and cellular respiration Use glycolysis to oxidize glucose and other organic fuels to pyruvate Fermentation and cellular respiration Differ in their final electron acceptor Cellular respiration Produces more ATP

63 Pyruvate is a key juncture in catabolism Glucose CYTOSOL Pyruvate No O 2 present Fermentation O 2 present Cellular respiration Ethanol or lactate Acetyl CoA MITOCHONDRION Citric acid cycle Figure 9.18

64 Catabolic pathways Funnel electrons from many kinds of organic molecules into cellular respiration

65 The catabolism of various molecules from food

66 Food isn t just for energy Biosynthesis-making of cellular molecules for repair and growth Consumption of ATP

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

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

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

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

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

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

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

Cellular Respiration: Harvesting Chemical Energy

Cellular Respiration: Harvesting Chemical Energy 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,

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 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

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 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

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

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

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

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

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

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

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

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

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

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

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

Chapter 9: Cellular Respiration: Harvesting Chemical Energy

Chapter 9: Cellular Respiration: Harvesting Chemical Energy AP Biology Reading Guide Name: Date: Period Chapter 9: Cellular Respiration: Harvesting Chemical Energy Overview: Before getting involved with the details of cellular respiration and photosynthesis, take

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: 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. 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

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

Energy Flow. Chapter 7. Cellular Respiration: Overview. Cellular Respiration. Cellular Respiration. Cellular Respiration occurs in three stages

Energy Flow. Chapter 7. Cellular Respiration: Overview. Cellular Respiration. Cellular Respiration. Cellular Respiration occurs in three stages Energy Flow Chapter 7 Cellular Respiration hotosynthesis uses solar energy to produce glucose and O from CO and H O Cellular respiration makes and consumes O during the oxidation of glucose to CO and H

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

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

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

Cellular Respiration

Cellular Respiration Cellular Respiration 1. To perform cell work, cells require energy. a. A cell does three main kinds of work: i. Mechanical work, such as the beating of cilia, contraction of muscle cells, and movement

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 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

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

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

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

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

Biology Kevin Dees. Chapter 9 Harvesting Chemical Energy: Cellular Respiration

Biology Kevin Dees. Chapter 9 Harvesting Chemical Energy: Cellular Respiration Chapter 9 Harvesting Chemical Energy: Cellular Respiration Life is Work!!! Biology Kevin Dees Catabolic pathways and ATP production Catabolic pathways release energy by breaking down large molecules into

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

Cellular Metabolism. Biol 105 Lecture 6 Read Chapter 3 (pages 63 69)

Cellular Metabolism. Biol 105 Lecture 6 Read Chapter 3 (pages 63 69) Cellular Metabolism Biol 105 Lecture 6 Read Chapter 3 (pages 63 69) Metabolism Consists of all of the chemical reactions that take place in a cell Metabolism Animation Breaking Down Glucose For Energy

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 Metabolism 9/24/2013. Metabolism. Cellular Metabolism. Consists of all the chemical reactions that take place in a cell!

Cellular Metabolism 9/24/2013. Metabolism. Cellular Metabolism. Consists of all the chemical reactions that take place in a cell! Cellular Metabolism Biology 105 Lecture 6 Chapter 3 (pages 56-61) Metabolism Consists of all the chemical reactions that take place in a cell! Cellular Metabolism Aerobic cellular respiration requires

More information

Cellular Respiration- -conversion of stored energy in glucose to usable energy for the cell -energy in cells is stored in the form of ATP

Cellular Respiration- -conversion of stored energy in glucose to usable energy for the cell -energy in cells is stored in the form of ATP Cellular Respiration Notes Chapter 7 How Cells Make ATP Energy Releasing Pathways Cellular Respiration- -conversion of stored energy in glucose to usable energy for the cell -energy in cells is stored

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

How Cells Release Chemical Energy. Chapter 8

How Cells Release Chemical Energy. Chapter 8 How Cells Release Chemical Energy Chapter 8 Impacts, Issues: When Mitochondria Spin Their Wheels More than forty disorders related to defective mitochondria are known (such as Friedreich s ataxia); many

More information

9.2 The Process of Cellular Respiration

9.2 The Process of Cellular Respiration 9.2 The Process of Cellular Respiration Oxygen Carbon 2 2 Dioxide 34 Water Glycolysis Glycolysis is the first stage of cellular respiration. During glycolysis, glucose is broken down into 2 molecules of

More information

Lesson Overview. Cellular Respiration: An Overview. 9.2 process of cell respiration

Lesson Overview. Cellular Respiration: An Overview. 9.2 process of cell respiration 9.2 process of cell respiration Glycolysis During glycolysis, glucose is broken down into 2 molecules of the 3-carbon molecule pyruvic acid. Pyruvic acid is a reactant in the Krebs cycle. ATP and NADH

More information

Cellular Respiration

Cellular Respiration Cellular Respiration The breakdown of glucose for cellular energy. happens in all living cells. is exothermic H atoms and e are removed from glucose (oxidization) and added to oxygen (reduction) excess

More information

Chapter 9 Cellular Respiration

Chapter 9 Cellular Respiration Chapter 9 Cellular Respiration Biology and Society: Marathoners versus Sprinters Sprinters do not usually compete at short and long distances. Natural differences in the muscles of these athletes favor

More information

Releasing Chemical Energy

Releasing Chemical Energy Releasing Chemical Energy Ø Energy From Carbohydrates Ø Aerobic Respiration/ Stages Ø Fermentation Ø Food as a Source of Energy How Do Cells Access the Chemical Energy in Carbohydrayes? Aerobic Respiration

More information

Cellular Respira,on. Topic 3.7 and 3.8

Cellular Respira,on. Topic 3.7 and 3.8 Cellular Respira,on Topic 3.7 and 3.8 Defini,on of cellular respira,on Controlled release of energy from organic compounds to produce ATP Cells break down organic compounds by SLOW oxida,on Chemical energy

More information

BY: RASAQ NURUDEEN OLAJIDE

BY: RASAQ NURUDEEN OLAJIDE BY: RASAQ NURUDEEN OLAJIDE LECTURE CONTENT INTRODUCTION CITRIC ACID CYCLE (T.C.A) PRODUCTION OF ACETYL CoA REACTIONS OF THE CITIRC ACID CYCLE THE AMPHIBOLIC NATURE OF THE T.C.A CYCLE THE GLYOXYLATE CYCLE

More information

Chapter 9 Cellular Respiration. Copyright Pearson Prentice Hall

Chapter 9 Cellular Respiration. Copyright Pearson Prentice Hall Chapter 9 Cellular Respiration Copyright Pearson Prentice Hall 9-1 Chemical Pathways Both plant and animal cells carry out the final stages of cellular respiration in the mitochondria. Animal Cells Animal

More information

How Cells Harvest Chemical Energy. Chapter 9

How Cells Harvest Chemical Energy. Chapter 9 How Cells Harvest Chemical Energy Chapter 9 Cellular Respiration Releasing energy (ATP) from glucose (chemical energy) in the presence of O 2 Energy flows Matter cycles True or False Plants only perform

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

Metabolism. Metabolic pathways. BIO 5099: Molecular Biology for Computer Scientists (et al) Lecture 11: Metabolic Pathways

Metabolism. Metabolic pathways. BIO 5099: Molecular Biology for Computer Scientists (et al) Lecture 11: Metabolic Pathways BIO 5099: Molecular Biology for Computer Scientists (et al) Lecture 11: Metabolic Pathways http://compbio.uchsc.edu/hunter/bio5099 Larry.Hunter@uchsc.edu Metabolism Metabolism is the chemical change of

More information

2. What are the products of cellular respiration? Include all forms of energy that are products.

2. What are the products of cellular respiration? Include all forms of energy that are products. Name Per Cellular Respiration An Overview Why Respire Anyhoo? Because bucko all cells need usable chemical energy to do work. The methods cells use to convert glucose into ATP vary depending on the availability

More information

KEY CONCEPT The overall process of cellular respiration converts sugar into ATP using oxygen.

KEY CONCEPT The overall process of cellular respiration converts sugar into ATP using oxygen. KEY CONCEPT The overall process of cellular respiration converts sugar into ATP using oxygen. ! Cellular respiration makes ATP by breaking down sugars. Cellular respiration is aerobic, or requires oxygen.

More information

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Respiration Practice Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following statements describes NAD+? A) NAD+ can donate

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

Energy and life. Generation of Biochemical Energy Chapter 21. Energy. Energy and biochemical reactions: 4/5/09

Energy and life. Generation of Biochemical Energy Chapter 21. Energy. Energy and biochemical reactions: 4/5/09 Energy and life Generation of Biochemical Energy Chapter 21 1 Biological systems are powered by oxidation of biomolecules made mainly of C, H and O. The food biomolecules are mainly Lipids (fats) Carbohydrates

More information

CELLULAR RESPIRATION. Xe - + Y X + Ye - CH 4 + 2O 2 CO 2 + H 2 O + energy. C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + energy SUMMARY EQUATION

CELLULAR RESPIRATION. Xe - + Y X + Ye - CH 4 + 2O 2 CO 2 + H 2 O + energy. C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + energy SUMMARY EQUATION AP BIOLOGY CELLULAR ENERGETICS ACTIVITY #2 NAME DATE HOUR CELLULAR RESPIRATION SUMMARY EQUATION STEPWISE REDOX REACTION Oxidation: Reduction: Xe - + Y X + Ye - CH 4 + 2O 2 CO 2 + H 2 O + energy C 6 H 12

More information

How Cells Release Chemical Energy Cellular Respiration

How Cells Release Chemical Energy Cellular Respiration How Cells Release Chemical Energy Cellular Respiration Overview of Cellular Respiration HO double membrane outer membrane inner membrane CO matrix Produces molecules Requires oxygen Releases carbon dioxide

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

Consists of all of the chemical reactions that take place in a cell. Summary of Cellular Respiration. Electrons transferred. Cytoplasm Blood vessel

Consists of all of the chemical reactions that take place in a cell. Summary of Cellular Respiration. Electrons transferred. Cytoplasm Blood vessel 7/19/2014 Metabolism Cellular Metabolism Metabolism Consists of all of the chemical reactions that take place in a cell PLAY Animation Breaking Down Glucose For Energy Biol 105 Lecture Packet 6 Read Chapter

More information

atty Acid Oxidation (β-oxidation)( in Mitochondria Net Result of Fatty Acid Oxidation Pathway Fatty acid shortened by 2 carbon unit

atty Acid Oxidation (β-oxidation)( in Mitochondria Net Result of Fatty Acid Oxidation Pathway Fatty acid shortened by 2 carbon unit ecture 14 10/3/05 ellular Respiration: arvesting hemical Energy hapter 9 II. atabolic Pathways Lecture utline 1. Review Fatty Acid xidation Pathway. xidation of Monosaccharides ( Pathway) 3. Mitochondrial

More information

Metabolism. Chapter 5. Catabolism Drives Anabolism 8/29/11. Complete Catabolism of Glucose

Metabolism. Chapter 5. Catabolism Drives Anabolism 8/29/11. Complete Catabolism of Glucose 8/29/11 Metabolism Chapter 5 All of the reactions in the body that require energy transfer. Can be divided into: Cell Respiration and Metabolism Anabolism: requires the input of energy to synthesize large

More information

Cellular Respiration. How is energy in organic matter released for used for in living systems?

Cellular Respiration. How is energy in organic matter released for used for in living systems? Cellular Respiration How is energy in organic matter released for used for in living systems? Cellular Respiration Organisms that perform cellular respiration are called chemoheterotrophs Includes both

More information

Unit 2: Metabolic Processes

Unit 2: Metabolic Processes How is energy obtained biologically? Recall: Red Ox Reactions Unit 2: Metabolic Processes Oxidation Is the chief mechanism by which chemical potential energy is released This energy comes from reduced

More information

Cell Respiration - 1

Cell Respiration - 1 Cell Respiration - 1 All cells must do work to stay alive and maintain their cellular environment. The energy needed for cell work comes from the bonds of ATP. Cells obtain their ATP by oxidizing organic

More information

Cellular Respiration Harvesting Chemical Energy ATP

Cellular Respiration Harvesting Chemical Energy ATP Cellular Respiration Harvesting Chemical Energy ATP 2009-2010 Ch.8.3 Section Objectives: Compare and contrast cellular respiration and fermentation. Explain how cells obtain energy from cellular respiration.

More information

Cell Respiration Ch 7. Both autotrophs and heterotrophs use cellular respiration to make CO2 and water from

Cell Respiration Ch 7. Both autotrophs and heterotrophs use cellular respiration to make CO2 and water from Cell Respiration Ch 7 Objectives: Identify the 2 major steps of cellular respiration Describe the major events in glycolysis Compare lactic acid fermentation with alcoholic fermentation Calculate the efficiency

More information

Ch. 9 Cellular Respiration Stage 2 & 3: Oxidation of Pyruvate Krebs Cycle

Ch. 9 Cellular Respiration Stage 2 & 3: Oxidation of Pyruvate Krebs Cycle Ch. 9 Cellular Respiration Stage 2 & 3: Oxidation of Pyruvate Krebs Cycle 2006-2007 Glycolysis is only the start Glycolysis glucose pyruvate 6C Pyruvate has more energy to yield 3 more C to strip off (to

More information

Life is based on redox

Life is based on redox Life is based on redox All energy generation in biological systems is due to redox (reduction-oxidation) reactions Aerobic Respiration: C 6 H 12 O 6 + 6 H 2 O ==> 6 CO 2 + 24 H + +24 e - oxidation electron

More information

Name: Block: Date: PACKET #8 Unit 3: Energy Transfer, Part II: Cellular Respiration

Name: Block: Date: PACKET #8 Unit 3: Energy Transfer, Part II: Cellular Respiration Name: Block: Date: PACKET #8 Unit 3: Energy Transfer, Part II: Cellular Respiration Reading: BSCS Text chapters 4, 5, and 2.8. Objectives: By the conclusion of this unit the student will be able to: Topic

More information

Enzymes and Metabolism

Enzymes and Metabolism PowerPoint Lecture Slides prepared by Vince Austin, University of Kentucky Enzymes and Metabolism Human Anatomy & Physiology, Sixth Edition Elaine N. Marieb 1 Protein Macromolecules composed of combinations

More information

Cellular Respiration. Chapter 9

Cellular Respiration. Chapter 9 Cellular Respiration Chapter 9 1.A)Explain where organisms get the energy needed for life processes. Organisms get the energy they need from food. Energy stored in food is expressed as calories. Calorie

More information

Photosynthesis and Cellular Respiration: Cellular Respiration

Photosynthesis and Cellular Respiration: Cellular Respiration Photosynthesis and Cellular Respiration: Cellular Respiration Unit Objective I can compare the processes of photosynthesis and cellular respiration in terms of energy flow, reactants, and products. During

More information

How Cells Harvest Chemical Energy

How Cells Harvest Chemical Energy Chapter 6 How Cells Harvest Chemical Energy PowerPoint Lectures for Biology: Concepts & Connections, Sixth Edition Campbell, Reece, Taylor, Simon, and Dickey Lecture by Richard L. Myers 6.1 Photosynthesis

More information

MITOCHONDRIA LECTURES OVERVIEW

MITOCHONDRIA LECTURES OVERVIEW 1 MITOCHONDRIA LECTURES OVERVIEW A. MITOCHONDRIA LECTURES OVERVIEW Mitochondrial Structure The arrangement of membranes: distinct inner and outer membranes, The location of ATPase, DNA and ribosomes The

More information

1st half of glycolysis (5 reactions) Glucose priming get glucose ready to split phosphorylate glucose rearrangement split destabilized glucose

1st half of glycolysis (5 reactions) Glucose priming get glucose ready to split phosphorylate glucose rearrangement split destabilized glucose Warm- Up Objective: Describe the role of in coupling the cell's anabolic and catabolic processes. Warm-up: What cellular processes produces the carbon dioxide that you exhale? 1st half of glycolysis (5

More information

Section 9 2 The Krebs Cycle and Electron Transport (pages )

Section 9 2 The Krebs Cycle and Electron Transport (pages ) Section 9 2 The Krebs Cycle and Electron Transport (pages 226 232) This section describes what happens during the second stage of cellular respiration, called the Krebs cycle. It also explains how high-energy

More information

CELLULAR RESPIRATION. Glycolysis

CELLULAR RESPIRATION. Glycolysis CELLULAR RESPIRATION Glycolysis Sources of Energy Carbohydrates glucose most usable source of energy cells turn to other fuels only if glucose supplies have been depleted stored in glycogen (animal) &

More information

Chapter 13 Carbohydrate Metabolism

Chapter 13 Carbohydrate Metabolism Chapter 13 Carbohydrate Metabolism Metabolism of Foods Food is broken down into carbohydrates, lipids, and proteins and sent through catabolic pathways to produce energy. Glycolysis glucose 2 P i 2 ADP

More information

Campbell's Biology: Concepts and Connections, 7e (Reece et al.) Chapter 6 How Cells Harvest Chemical Energy. 6.1 Multiple-Choice Questions

Campbell's Biology: Concepts and Connections, 7e (Reece et al.) Chapter 6 How Cells Harvest Chemical Energy. 6.1 Multiple-Choice Questions Campbell's Biology: Concepts and Connections, 7e (Reece et al.) Chapter 6 How Cells Harvest Chemical Energy 6.1 Multiple-Choice Questions 1) Which of the following statements regarding photosynthesis and

More information

CHE 242 Exam 3 Practice Questions

CHE 242 Exam 3 Practice Questions CHE 242 Exam 3 Practice Questions Glucose metabolism 1. Below is depicted glucose catabolism. Indicate on the pathways the following: A) which reaction(s) of glycolysis are irreversible B) where energy

More information

1 CH:14 RESPIRATION IN PLANTS https://biologyaipmt.com/

1 CH:14 RESPIRATION IN PLANTS https://biologyaipmt.com/ 1 CH:14 RESPIRATION IN PLANTS https://biologyaipmt.com/ CHAPTER 14 RESPIRATION IN PLANTS All the energy required for 'life' processes is obtained by oxidation of some macromolecules that we call 'food'.

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

Physiological Chemistry II Exam IV Dr. Melissa Kelley April 13, 2004

Physiological Chemistry II Exam IV Dr. Melissa Kelley April 13, 2004 Name Write your name on the back of the exam Physiological Chemistry II Exam IV Dr. Melissa Kelley April 13, 2004 This examination consists of forty-four questions, each having 2 points. The remaining

More information

9-1 Chemical Pathways Interactive pgs

9-1 Chemical Pathways Interactive pgs Interactive pgs. 221-225 1 of 39 9-1 Chemical Pathways Food serves as a source of raw materials for the cells in the body and as a source of energy. Animal Cells Animal Mitochondrion Plant Plant Cells

More information

Bio 111 Study Guide Chapter 7 Cellular Respiration & Fermentation

Bio 111 Study Guide Chapter 7 Cellular Respiration & Fermentation Bio 111 Study Guide Chapter 7 Cellular Respiration & Fermentation BEFORE CLASS: Reading: Read the whole chapter from pp. 141-158. In Concept 7.1, pay special attention to oxidation & reduction and the

More information

Citrate Cycle. Lecture 28. Key Concepts. The Citrate Cycle captures energy using redox reactions

Citrate Cycle. Lecture 28. Key Concepts. The Citrate Cycle captures energy using redox reactions Citrate Cycle Lecture 28 Key Concepts The Citrate Cycle captures energy using redox reactions Eight reactions of the Citrate Cycle Key control points in the Citrate Cycle regulate metabolic flux What role

More information

Citric Acid Cycle: Central Role in Catabolism. Entry of Pyruvate into the TCA cycle

Citric Acid Cycle: Central Role in Catabolism. Entry of Pyruvate into the TCA cycle Citric Acid Cycle: Central Role in Catabolism Stage II of catabolism involves the conversion of carbohydrates, fats and aminoacids into acetylcoa In aerobic organisms, citric acid cycle makes up the final

More information

Portal module: m Glycolysis. First Last. 1 First Half of Glycolysis (Energy-Requiring Steps)

Portal module: m Glycolysis. First Last. 1 First Half of Glycolysis (Energy-Requiring Steps) Portal module: m10399 1 Glycolysis First Last This work is produced by Portal and licensed under the Creative Commons Attribution License 4.0 Abstract By the end of this section, you will be able to do

More information

Cellular Respiration

Cellular Respiration Cellular Respiration Cellular respiration is the process that releases energy by breaking down glucose and other food molecules in the presence of oxygen In biology and chemistry, energy is referred to

More information

TCA CYCLE (Citric Acid Cycle)

TCA CYCLE (Citric Acid Cycle) TCA CYCLE (Citric Acid Cycle) TCA CYCLE The Citric Acid Cycle is also known as: Kreb s cycle Sir Hans Krebs Nobel prize, 1953 TCA (tricarboxylic acid) cycle The citric acid cycle requires aerobic conditions!!!!

More information

Cell Respiration. Anaerobic & Aerobic Respiration

Cell Respiration. Anaerobic & Aerobic Respiration Cell Respiration Anaerobic & Aerobic Respiration Understandings/Objectives 2.8.U1: Cell respiration is the controlled release of energy from organic compounds to produce ATP. Define cell respiration State

More information