Life Needs Energy. The Rules (Laws of Thermodynamics) 1) energy can not be created or destroyed, but it can be changed from one form to another
|
|
- Della Brown
- 5 years ago
- Views:
Transcription
1 Intro to Metabolism
2 Learning Outcomes Explain laws governing energy and energy transfers. Describe enzymes and how they work. Explain what is meant by selectively permeable. Explain the differences between diffusion, facilitated diffusion, and active transport. Explain osmosis and be able to predict the net movement of H 2 O molecules under various conditions Describe endocytosis (e.g., phagocytosis) and exocytosis
3 Life Needs Energy The Rules (Laws of Thermodynamics) 1) energy can not be created or destroyed, but it can be changed from one form to another 2) when energy is changed from one form to another there is always some loss of usable energy (i.e., entropy increases).
4 Entropy Increases
5 Life Needs Energy Potential Energy --- stored energy Kinetic energy energy of motion In living systems, energy is stored in the form of chemical bonds
6 Life Needs Energy In living systems, energy is stored in the form of chemical bonds Reactants Products 2H 2 (hydrogen ) + O 2 (oxygen ) 2H 2 O (water ) 4 hydrogen atoms + 2 oxygen atoms 4 hydrogen atoms + 2 oxygen atoms
7 Energy Transformations Reactants Potential energy Energy Products Amount of energy released When chemical bonds in molecules are broken down, energy is released.
8 Energy Transformations Products Potential energy Reactants Energy Amount of energy required To build complex molecules energy input is required.
9 Enzymes Facilitate Chemical Reactions enzyme binding to substrates chemical rxn completed product released
10 Enzymes Facilitate Chemical Reactions Transition state Free energy Reactants Activation energy without enzyme Activation energy with enzyme Products Time
11 Metabolic Pathways Require Enzymes Metabolism is the sum of all chemical reactions occurring in a living system at any given time. Metabolic pathways are specific subsets of chemical reactions. Most metabolic pathways are similar in all organisms. We will look at two important metabolic pathways photosynthesis and respiration
12 Metabolic Pathways Require Enzymes A series of chemical reactions form a metabolic pathway. X Each reaction in the series is catalyzed by a specific enzyme. The end product of a pathway can inhibit the enzyme that starts the pathway.
13 Where in real life do we see enzyme inhibitors? Many of the Drugs used in medicine are enzyme inhibitors Example 1) Aspirin blocks an enzyme called cyclo-oxygenase that makes pro-inflammatory molecules that activate inflammation responses by the immune system
14 Where in real life do we see enzyme inhibitors? Example 2) Lipitor Lipitor and other statins work by blocking an enzyme called HMG-CoA Reductase that is required for cholesterol synthesis CHOLESTEROL
15 The Lipid Bilayer is a Barrier Phospholipid Bilayers are selectively permeable Non-polar or hydrophobic molecules can pass through Polar or hydrophilic molecules can not
16 SO - How do we get stuff in and out of the cell? IN diffusion OUT - exocytosis facilitated diffusion active transport endocytosis phagocytosis
17 Diffusion: Molecules move from high concentration to low concentration.
18 Diffusion: Molecules move from high concentration to low concentration.
19 Osmosis Osmosis is the diffusion of H 2 O across a semi-permeable membrane Movement of H 2 O depends on what is dissolved in the H 2 O Dissolved substance = solute Flow of H 2 O
20 Osmosis Osmosis
21 Facilitated Diffusion Molecules move down their concentration gradient no energy input required. Extracellular Fluid glucose Cytoplasm
22 Facilitated Diffusion
23 Active Transport Energy is required to move molecules against their concentration gradient Extracellular Fluid Cytoplasm
24 Active Transport
25 Endocytosis Part of the plasma membrane encapsulates material outside the cell.
26 Phagocytosis similar to endocytosis, but for uptake of LARGE particles.
27 Exocytosis Vesicles from the Golgi apparatus fuse with the plasma membrane and release material to the outside of the cell.
1. I can explain the structure of ATP and how it is used to store energy.
1. I can explain the structure of ATP and how it is used to store energy. ATP is the primary energy molecule for the cell. It is produced in the mitochondria during cellular respiration, which breaks down
More informationCH 7.2 & 7.4 Biology
CH 7.2 & 7.4 Biology LABEL THE MEMBRANE Phospholipids Cholesterol Peripheral proteins Integral proteins Cytoskeleton Cytoplasm Extracellular fluid Most of the membrane A phospholipid bi-layer makes up
More informationChapter 5 Ground Rules Of Metabolism
Chapter 5 Ground Rules Of Metabolism Energy and the World of Life Energy Capacity to do work Two Forms Of energy Kinetic Energy is the energy an object has because it is moving Potential Energy is the
More informationThe Plasma Membrane - Gateway to the Cell
The Plasma Membrane - Gateway to the Cell 1 Photograph of a Cell Membrane 2 Cell Membrane The cell membrane is flexible and allows a unicellular organism to move 3 Homeostasis Balanced internal condition
More informationThe Working Cell: G: Membrane Transport & H: Enzymes. Chapter 5
The Working Cell: G: Membrane Transport & H: Enzymes Chapter 5 Standards Unit G: Membrane Transport I can recognize the fluid mosaic model and accurately identify and describe the function of the components.
More informationThe Plasma Membrane - Gateway to the Cell
The Plasma Membrane - Gateway to the Cell 1 Photograph of a Cell Membrane 2 Cell Membrane The cell membrane is flexible and allows a unicellular organism to move 3 Homeostasis Balanced internal condition
More informationGateway to the Cell 11/1/2012. The cell membrane is flexible and allows a unicellular organism to move FLUID MOSAIC MODEL
Gateway to the Cell The cell membrane is flexible and allows a unicellular organism to move Isolates the cell, yet allows communication with its surroundings fluid mosaics = proteins (and everything else)
More informationKey Concepts - All Cells Use Energy Energy Conversions - Reactions Absorb or Release Energy Endergonic, Exergonic - ATP is Cellular Energy
Key Concepts - All Cells Use Energy Energy Conversions - Reactions Absorb or Release Energy Endergonic, Exergonic - ATP is Cellular Energy ATP Cycle - Enzymes Speed Up Reactions Enzyme Function, Factors
More informationThe Cell Membrane & Movement of Materials In & Out of Cells PACKET #11
1 The Cell Membrane & Movement of Materials In & Out of Cells PACKET #11 Introduction I 2 Biological membranes are phospholipid bilayers with associated proteins. Current data support a fluid mosaic model
More informationHow Cells Work. Chapter 4
How Cells Work Chapter 4 Energy Laws Energy is the capacity to do work The total amount of energy in the universe is constant-energy can t be created or destroyed..only transferred! Energy is flowing from
More informationUnit 2: More on Matter & Energy in Ecosystems. Macromolecules to Organelles to Cells
IN: Unit 2: More on Matter & Energy in Ecosystems Macromolecules to Organelles to Cells Where are cells on the biological scale? Sub-Atomic Particles Atoms Molecules Macromolecules (proteins, lipids, nucleic
More informationKeystone Biology Remediation A4: Homeostasis and Transport
Keystone Biology Remediation A4: Homeostasis and Transport Assessment Anchors: to describe how the structure of the plasma allows it to function as a regulatory structure and/or protective barrier for
More informationTRANSPORT ACROSS MEMBRANES
Unit 2: Cells, Membranes and Signaling TRANSPORT ACROSS MEMBRANES Chapter 5 Hillis Textbook TYPES OF TRANSPORT ACROSS THE CELL (PLASMA) MEMBRANE: What do you remember? Complete the chart with what you
More informationChapter 5. The Working Cell. PowerPoint Lectures for Campbell Biology: Concepts & Connections, Seventh Edition Reece, Taylor, Simon, and Dickey
Chapter 5 The Working Cell PowerPoint Lectures for Campbell Biology: Concepts & Connections, Seventh Edition Reece, Taylor, Simon, and Dickey Lecture by Edward J. Zalisko Lesson Plans Flipped Classroom
More informationThe Cell Membrane & Movement of Materials In & Out of Cells PACKET #11
1 February 26, The Cell Membrane & Movement of Materials In & Out of Cells PACKET #11 Introduction I 2 Biological membranes are phospholipid bilayers with associated proteins. Current data support a fluid
More informationChapter 5. The Working Cell. Lecture by Richard L. Myers
Chapter 5 The Working Cell PowerPoint Lectures for Biology: Concepts & Connections, Sixth Edition Campbell, Reece, Taylor, Simon, and Dickey Lecture by Richard L. Myers MEMBRANE STRUCTURE AND FUNCTION
More informationCell Membrane & Transport SBI4U 2016/10/18
Cell Membrane & Transport SBI4U 2016/10/18 Cell membrane All cells exist in an aqueous environment, separated by their membrane; The membrane regulates which substances pass into or out of the cell; It
More informationDraw and label a diagram to show the structure of membranes
2.4 Membranes 2.4.1 - Draw and label a diagram to show the structure of membranes Phospholipid Bilayer - This is arranged with the hydrophilic phosphate heads facing outwards, and the hydrophobic fatty
More informationDiffusion, Osmosis and Active Transport
Diffusion, Osmosis and Active Transport Particles like atoms, molecules and ions are always moving Movement increases with temperature (affects phases of matter - solid, liquid, gas) Solids - atoms, molecules
More informationPlasma Membrane & Movement of Materials in Cells
Plasma Membrane & Movement of Materials in Cells Why do cells need to control what enters and exits? Plasma membrane boundary between the cell and its environment Homeostasis maintaining the cells environment
More informationChapter 4: Cell Membrane Structure and Function
Chapter 4: Cell Membrane Structure and Function Plasma Membrane: Thin barrier separating inside of cell (cytoplasm) from outside environment Function: 1) Isolate cell s contents from outside environment
More informationChapter 5. The Working Cell. Lecture by Richard L. Myers
Chapter 5 The Working Cell PowerPoint Lectures for Biology: Concepts & Connections, Sixth Edition Campbell, Reece, Taylor, Simon, and Dickey Copyright 2009 Pearson Education, Inc. Lecture by Richard L.
More informationMembrane Structure and Function. Eukaryotic Cell: Neuron
Membrane Structure and Function Eukaryotic Cell: Neuron Membrane Structure and Function All cells have a plasma or cell membrane, which contains the cell. Scanning electron micrograph (SEM) of adipocytes
More informationCell membrane & Transport. Dr. Ali Ebneshahidi Ebneshahidi
Cell membrane & Transport Dr. Ali Ebneshahidi Cell Membrane To enclose organelles and other contents in cytoplasm. To protect the cell. To allow substances into and out of the cell. To have metabolic reactions
More informationCHAPTER 8 MEMBRANE STRUCTURE AND FUNCTION
CHAPTER 8 MEMBRANE STRUCTURE AND FUNCTION Section B: Traffic Across Membranes 1. A membrane s molecular organization results in selective permeability 2. Passive transport is diffusion across a membrane
More informationChapter 5 Ground Rules of Metabolism Sections 6-10
Chapter 5 Ground Rules of Metabolism Sections 6-10 5.6 Cofactors in Metabolic Pathways Most enzymes require cofactors Energy in ATP drives many endergonic reactions Table 5-1 p86 Cofactors and Coenzymes
More informationChapter 1 Plasma membranes
1 of 5 TEXTBOOK ANSWERS Chapter 1 Plasma membranes Recap 1.1 1 The plasma membrane: keeps internal contents of the cell confined to one area keeps out foreign molecules that damage or destroy the cell
More informationOutline. Membrane Structure and Function. Membrane Models Fluid-Mosaic. Chapter 5
Membrane Structure and Function Chapter 5 Membrane Models Fluid-Mosaic Outline Plasma Membrane Structure and Function Protein Functions Plasma Membrane Permeability! Diffusion! Osmosis! Transport Via Carrier
More information5.6 Diffusion, Membranes, and Metabolism
5.6 Diffusion, Membranes, and Metabolism Concentration of a substance Number of atoms or molecules in a given volume Concentration gradient of a substance A difference in concentration between two regions
More informationTransport. Slide 1 of 47. Copyright Pearson Prentice Hall
& Transport 1 of 47 Learning Targets TN Standard CLE 3216.1.3 Explain how materials move into and out of cells. CLE 3216.1.5 Investigate how proteins regulate the internal environment of a cell through
More informationMovement across the Cell Membrane
Movement across the Cell Membrane Diffusion 2nd Law of Thermodynamics governs biological systems universe tends towards disorder (entropy) Diffusion u movement from HIGH LOW concentration Simple Diffusion
More informationEquilibrium is a condition of balance. Changes in temperature, pressure or concentration can cause a shift in the equilibrium.
Copy into Note Packet and Return to Teacher Cells and Their Environment Section 1: Passive Transport Objectives Relate concentration gradients, diffusion, and equilibrium. Predict the direction of water
More informationInorganic compounds: Usually do not contain carbon H 2 O Ca 3 (PO 4 ) 2 NaCl Carbon containing molecules not considered organic: CO 2
Organic Chemistry The study of carbon-containing compounds and their properties. Biochemistry: Made by living things All contain the elements carbon and hydrogen Inorganic: Inorganic compounds: All other
More informationCells. Prokaryotic vs. Eukaryotic Euakryotic cells are generally one to one hundred times bigger than prokaryotic cells
Cell Theory Cells 1. All living things are composed of one or more cell 2. Cell is the basic unit of life 3. All cells come from the division of pre-existing cells Cells are divided into 2 categories:
More information1. Prokaryotic (Bacteria) Eukaryotic (all other living things)
AP BIOLOGY CONCEPT 2 CELLS (Review for Exam 3 on Nov. 30) 1. Prokaryotic (Bacteria) Eukaryotic (all other living things) no membrane-bound organelles m.b.o, ex. Chloroplasts and nucleus no nucleus(single;
More informationCell Membranes and Signaling
5 Cell Membranes and Signaling Concept 5.1 Biological Membranes Have a Common Structure and Are Fluid A membrane s structure and functions are determined by its constituents: lipids, proteins, and carbohydrates.
More informationd. When the salt concentration outside the cell is very low, diffusion causes water to
4B EOC Biology Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Water movement into and out of cells is of prime importance to all living things. A single
More information3. Describe the study in mimicry, using king snakes and coral snakes. Identify the control in the experiment.
Biology Semester 1 Exam Review Guide Chapter 1 Biology in the 21 st Century 1. Distinguish between the following key terms: Biology Name : Pd: Hypothesis Variable Controlled experiment Theory Model Technology
More informationStudy Guide A. Answer Key. Cell Structure and Function
Cell Structure and Function Answer Key SECTION 1. CELL THEORY 1. b 2. e 3. d 4. a 5. c 6. i. cells; ii. living; iii. cell 7. biology 8. Surrounded by a cell membrane = Both; Contains cytoplasm = Both;
More informationCell Biology. The Plasma Membrane
Cell Biology The Plasma Membrane recall Fluid Mosiac Model S.J. Singer Semipermeable membrane fluid portion is double layer of phospholipids (=phospholipid bilayer) mosaic portion is the proteins and carbohydrates
More informationHomeostasis, Transport & The Cell Membrane. Chapter 4-2 (pg 73 75) Chapter 5
Homeostasis, Transport & The Cell Membrane Chapter 4-2 (pg 73 75) Chapter 5 Unit 5: Lecture 1 Topic: The Cell Membrane Covers: Chapter 5, pages 95-96 Chapter 4, pages 73-75 The Cell Membrane The chemistry
More informationThe Cell Membrane. Lecture 3a. Overview: Membranes. What is a membrane? Structure of the cell membrane. Fluid Mosaic Model. Membranes and Transport
Lecture 3a. The Cell Membrane Membranes and Transport Overview: Membranes Structure of cell membranes Functions of cell membranes How things get in and out of cells What is a membrane? Basically, a covering
More informationMovement across the Membrane
Chapter 8. Movement across the Membrane 2003-2004 1 Cell membrane Cells have an inside & an outside Cell membrane is the boundary Can it be an impenetrable boundary? NO! Why not? The cell needs materials
More informationChapter 7-3 Cell Boundaries
Chapter 7-3 Cell Boundaries The Plasma Membrane: Cell Membrane Regulates what enters and leaves the cell. Provides protection and support. Highly selective barrier!!!! What the plasma membrane is made
More informationThe Cell and Cellular transport
Cell theory (1838): The Cell 1. All organisms are composed of one or more cells, and the life processes of metabolism and heredity occur within these cells. 2. Cells are the smallest living things, the
More informationMovement across the Cell Membrane (Ch. 7.3)
Movement across the Cell Membrane (Ch. 7.3) 2007-2008 Diffusion 2nd Law of Thermodynamics governs biological systems universe tends towards disorder (entropy) Diffusion movement from HIGH LOW concentration
More information1. (a. Homeostasis / b. Feedback) is a state of constancy of conditions inside the human body
PLEASE BE AWARE CONTENT COVERED ON EXAMS VARIES FROM ONE SEMESTER TO ANOTHER. THIS EXAM MAY NOT CONTAIN MATERIAL THAT WILL BE ON YOUR EXAM THIS SEMESTER, AND/OR MAY CONTAIN MATERIAL THAT WILL NOT BE COVERED
More informationChapter 3. Section 3.3 Transport Across Membranes Pages 63-66
Chapter 3 Section 3.3 Transport Across Membranes Pages 63-66 Membrane Transport The plasma membrane is a phospholipid bilayer. The inside of the bilayer is hydrophobic and the outside of the bilayer is
More informationName Class Date. cell theory organelle eukaryotic cell. MAIN IDEA: Early studies led to the development of the cell theory.
Section 1: Cell Theory KEY CONCEPT Cells are the basic unit of life. VOCABULARY cell theory organelle eukaryotic cell cytoplasm prokaryotic cell MAIN IDEA: Early studies led to the development of the cell
More informationCell Boundaries. Chapter 7.3 Strand: B2.5h
Cell Boundaries Chapter 7.3 Strand: B2.5h Review: Cell Membrane What is the role of the cell membrane within a cell? The cell membrane regulates what enters and leaves the cell and also provides protection
More informationControlled via the Cell Membrane
CELL TRANSPORT 1 Controlled via the Cell Membrane Passive Transport Does NOT require energy, moves from HIGH concentrations to LOW concentrations Active Transport DOES require energy, moves from LOW concentrations
More informationChapter 3: Cell Structure and Function Assignment
Chapter 3: Cell Structure and Function Assignment Provide full detail and be specific for full marks. 1. How do these organelles work together? 2 marks each = 10 marks a. lysosomes and vacuoles When material
More informationMonday, September 30 th :
Monday, September 30 th : QUESTION TO PONDER: Differentiate between a pro- and eukaryotic organism. List 4 organelles that each type of organism has in common. The Cell Membrane Modified from Kim Foglia
More informationCHAPTER 8 MEMBRANE STUCTURE AND FUNCTION
CHAPTER 8 MEMBRANE STUCTURE AND FUNCTION Plasma Membrane Plasma membrane is selectively permeable, (allowing some substances to cross more easily than others) PM is flexible bends and changes shape
More informationCellular Transport Notes
Cellular Transport Notes About Cell Membranes All cells have a cell membrane Functions: a. Controls what enters and exits the cell to maintain an internal balance called homeostasis b. Provides protection
More informationChapter 3 Review Assignment
Class: Date: Chapter 3 Review Assignment Multiple Choice 40 MC = 40 Marks Identify the choice that best completes the statement or answers the question. 1. Which of the following organelles produces transport
More informationThe Cell Membrane AP Biology
The Cell Membrane 2007-2008 Warm Up What would happen if you gave a patient an IV of pure water? a. Their blood cells would shrink. b. Their blood cells would burst. c. The patient would slowly become
More informationAP Biology. Overview. The Cell Membrane. Phospholipids. Phospholipid bilayer. More than lipids. Fatty acid tails. Phosphate group head
Overview The Cell Membrane Cell separates living cell from nonliving surroundings thin barrier = 8nm thick Controls traffic in & out of the cell selectively permeable allows some substances to cross more
More informationMEMBRANE STRUCTURE AND FUNCTION
MEMBRANE STRUCTURE AND FUNCTION 2.4.2 Membranes organize the chemical activities of cells Membranes provide structural order for metabolism Form most of the cell's organelles Compartmentalize chemical
More informationPhospholipids. Phosphate head. Fatty acid tails. Arranged as a bilayer. hydrophilic. hydrophobic. Phosphate. Fatty acid. attracted to water
The Cell Membrane Phospholipids Phosphate head hydrophilic Fatty acid tails hydrophobic Arranged as a bilayer Phosphate attracted to water Fatty acid repelled by water I want you to remember: Structure
More informationThe Cell Membrane and Cellular Transportation
The Cell Membrane and Cellular Transportation Oct 20 7:07 PM Cell Membrane Forms a barrier between the cell and the external environment. Has three main functions: 1) helps the cell retain the molecules
More informationMembrane Structure and Function
Membrane Structure and Function Chapter 7 Objectives Define the following terms: amphipathic molecules, aquaporins, diffusion Distinguish between the following pairs or sets of terms: peripheral and integral
More informationThe Cell Membrane. Cell membrane separates living cell from nonliving surroundings. Controls traffic in & out of the cell
The Cell Membrane 1 Overview Cell membrane separates living cell from nonliving surroundings thin barrier = 8nm thick Controls traffic in & out of the cell selectively permeable allows some substances
More informationName 5 The Working Cell Test Date Study Guide You must know: The key role of ATP in energy coupling That enzymes work by lowering the energy of
Name _ 5 The Working Cell Test Date Study Guide You must know: The key role of ATP in energy coupling That enzymes work by lowering the energy of activation. The catalytic cycle of an enzyme that results
More informationDescribe the Fluid Mosaic Model of membrane structure.
Membranes and Cell Transport All cells are surrounded by a plasma membrane. Eukaryotic cells also contain internal membranes and membranebound organelles. In this topic, we will examine the structure and
More informationPlasma Membrane Function
Plasma Membrane Function Cells have to maintain homeostasis, they do this by controlling what moves across their membranes Structure Double Layer of phospholipids Head (polar) hydrophiliclikes water -
More informationCELL TRANSPORT and THE PLASMA MEMBRANE. SB1d. Explain the impact of water on life processes (i.e., osmosis, diffusion).
CELL TRANSPORT and THE PLASMA MEMBRANE SB1d. Explain the impact of water on life processes (i.e., osmosis, diffusion). What if What would happen if an organism could not get energy or get rid of wastes?
More informationThe Cell Membrane AP Biology
The Cell Membrane AP Biology! 2007-2008 Overview! Cell membrane separates living cell from nonliving surroundings " thin barrier = 8nm thick! Controls traffic in & out of the cell " selectively permeable
More informationCell Theory. Eukaryote Cells. Prokaryote Cells 8/18/16
Cell Theory http://www.beatricebiologist.com www.beatricebiologist.com 1) All living things are made up of cells 2) All cells come from pre-existing cells 3) The cell is the fundamental unit of structure
More information3.1. Cell Structure and Function CHAPTER 3. Cells are the basic unit of life. CELL THEORY Study Guide KEY CONCEPT
SECTION 3.1 KEY CONCEPT CELL THEORY Study Guide Cells are the basic unit of life. VOCABULARY cell theory organelle eukaryotic cell cytoplasm prokaryotic cell Early studies led to the development of the
More informationBio 103 Section A02 Summer 2003 Exam #2 Study Guide Dr. Largen
Chapter 4 - Cell Structure Bio 103 Section A02 Summer 2003 Exam #2 Study Guide Dr. Largen Microscopes provide windows to the world of the cell compare light versus electron microscopes illumination type
More informationTransport Movement across the Cell Membrane
Transport Movement across the Cell Membrane Lipids of cell membrane Membrane consists primarily of phosphos phospho bilayer inside cell phosphate hydrophilic outside cell hydrophobic S1 The Fluidity of
More informationMembranes. Chapter 5
Membranes Chapter 5 Membrane Structure The fluid mosaic model of membrane structure contends that membranes consist of: -phospholipids arranged in a bilayer -globular proteins inserted in the lipid bilayer
More information1. Membrane proteins have a variety of functions. State four membrane protein functions. A. B. C. D.
Part I: Short answers 1. Membrane proteins have a variety of functions. State four membrane protein functions. A. B. C. D. Part II: Label the components 2. Label the components of a biological membrane
More informationMembrane Structure. Membrane Structure. Membrane Structure. Membranes
Membrane Structure Membranes Chapter 5 The fluid mosaic model of membrane structure contends that membranes consist of: -phospholipids arranged in a bilayer -globular proteins inserted in the lipid bilayer
More informationPhospholipids. Extracellular fluid. Polar hydrophilic heads. Nonpolar hydrophobic tails. Polar hydrophilic heads. Intracellular fluid (cytosol)
Module 2C Membranes and Cell Transport All cells are surrounded by a plasma membrane. Eukaryotic cells also contain internal membranes and membrane- bound organelles. In this module, we will examine the
More informationBSC Exam I Lectures and Text Pages
BSC 2010 - Exam I Lectures and Text Pages I. Intro to Biology (2-29) II. Chemistry of Life Chemistry review (30-46) Water (47-57) Carbon (58-67) Macromolecules (68-91) III. Cells and Membranes Cell structure
More informationChapter 4 Skeleton Notes: Membrane Structure & Function
Chapter 4 Skeleton Notes: Membrane Structure & Function Overview/Objectives 4.1 Plasma Membrane Structure & Function o Structure and Function of the PM o Major functions of proteins 4.2- Permeability of
More informationMembrane Structure. Membrane Structure. Membranes. Chapter 5
Membranes Chapter 5 Membrane Structure The fluid mosaic model of membrane structure contends that membranes consist of: -phospholipids arranged in a bilayer -globular proteins inserted in the lipid bilayer
More informationPlasma Membrane Structure and Function
Plasma Membrane Structure and Function The plasma membrane separates the internal environment of the cell from its surroundings. The plasma membrane is a phospholipid bilayer with embedded proteins. The
More informationCWDHS Mr. Winch Grade 12 Biology
The Cell Membrane Overview Cell separates living cell from nonliving surroundings thin barrier = 8nm thick Controls traffic in & out of the cell selectively permeable allows some substances to cross more
More informationWritten Response #1: True/False
Written Response #1: True/False 1. Osmosis means to absorb something. 2. Cells are able to excrete waste. 3. Cells obtain energy by gaining nutrition from food. 4. Plants use sunlight for food. 5. Plants
More information9/20/2016 CHAPTER 7 LECTURE NOTES. Section Objectives. Explain how a cell s plasma membrane functions.
CHAPTER 7 LECTURE NOTES Kennedy biol. 1ab Section Objectives Explain how a cell s plasma membrane functions. Relate the function of the plasma membrane to the fluid mosaic model. All living cells must
More informationCELLS and TRANSPORT Student Packet SUMMARY CELL MEMBRANES ARE SELECTIVELY PERMEABLE DUE TO THEIR STRUCTURE Hydrophilic head
CELLS and TRANSPORT Student Packet SUMMARY CELL MEMBRANES ARE SELECTIVELY PERMEABLE DUE TO THEIR STRUCTURE Hydrophilic head Hydrophobic tail Hydrophobic regions of protein Hydrophilic regions of protein
More informationThe Cell Membrane. Why cells must control materials. Living cells must maintain homeostasis for survival.
The Cell Membrane Why cells must control materials Living cells must maintain homeostasis for survival. The cell membrane is the boundary between the cell and its environment. It is the cell membrane s
More informationCell Membrane: a Phospholipid Bilayer. Membrane Structure and Function. Fluid Mosaic Model. Chapter 5
Membrane Structure and Function Chapter 5 Cell Membrane: a Phospholipid Bilayer Phospholipid Hydrophilic Head Hydrophobic Tail Lipid Bilayer Fluid Mosaic Model Mixture of saturated and unsaturated fatty
More informationUnit 1 Matter & Energy for Life
Unit 1 Matter & Energy for Life Chapter 2 Interaction of Cell Structure Biology 2201 Sept. 2011 Primary Membrane Function: Homeostasis Section 2.2 Conditions in the cell must remain more or less constant
More informationFirst discovered in 1665 since then every organism observed with microscopes shows cells
The Cell Cell theory (1838): 1. All organisms are composed of one or more cells, and the life processes of metabolism and heredity occur within these cells. 2. Cells are the smallest living things, the
More informationPhospholipid Bilayer Hydrophilic head Hydrophobic tail Molecules with hydrophilic and hydrophobic parts are called Ampipathic molecules
Plasma Membrane The membrane at the boundary of every cell Functions as a selective barrier for the passage of materials in and out of cells Membrane Composition Phospholipids Proteins Carbohydrates Cholesterol
More informationPassive and Active transport across a cell membrane REVIEW MEMBRANE TRANSPORT
Passive and Active transport across a cell membrane REVIEW MEMBRANE TRANSPORT Cell (plasma) membrane Thin, flexible barrier Membranes also organize the interior of a cell. Cell organelles are defined by
More information/ The following functional group is a. Aldehyde c. Carboxyl b. Ketone d. Amino
Section A: Multiple Choice Select the answer that best answers the following questions. Please write your selected choice on the line provided, in addition to circling the answer. /25 1. The following
More informationUnit 2 Notes: Cells. What you need to know:
1 Unit 2 Notes: Cells What you need to know: 1. MC.2.B.1: Construct a hierarchy of life from cells to ecosystems. (ex: cell, tissue, organ etc) 2. NS.12.B.4: Relate the development of the cell theory to
More informationCell Theory. Cells are the basic unit of life.
3.1 7.1 Cell Theory Cells are the basic unit of life. 3.1 7.1 Cell Theory The cell theory grew out of the work of many scientists Galileo (1610) made the first microscope Hooke (1665) made up the term
More information7.3 Cell Boundaries. Regents Biology. Originally prepared by Kim B. Foglia. Revised and adapted by Nhan A. Pham
7.3 Cell Boundaries Originally prepared by Kim B. Foglia. Revised and adapted by Nhan A. Pham Don t look at your reading guide/textbook or talk with each other yet! Write down one thing you know/remember
More informationUnit 1 Matter & Energy for Life
Unit 1 Matter & Energy for Life Chapter 2 Interaction of Cell Structures Biology 2201 Primary Membrane Function: Homeostasis Section 2.2 Conditions in the cell must remain more or less constant under many
More informationCell Membrane (Transport) Notes
Cell Membrane (Transport) Notes Cell Membrane and Cell Wall: ALL cells have a cell membrane made of proteins and lipids protein channel Cell Membrane Layer 1 Layer 2 lipid bilayer protein pump SOME cells
More informationConstant Motion of Molecules. Kinetic Theory of Matter Molecules move randomly and bump into each other and other barriers
CELL TRANSPORT Constant Motion of Molecules Kinetic Theory of Matter Molecules move randomly and bump into each other and other barriers Solution homogenous liquid throughout which two or more substances
More informationThink About it. Prokaryotic v. Eukaryotic Cells. The Discovery of the Cell. The cell theory states: Exploring the Cell 10/10/2016
Think About it What s the smallest part of any living thing that still counts as being alive? Prokaryotic v. Eukaryotic Cells Can we just keep dividing living things into smaller and smaller parts, or
More informationDivision Ave High School Ms. Foglia AP Biology
The Cell Membrane Phospholipids Phosphate head hydrophilic Fatty acid tails hydrophobic Arranged as a bilayer Phosphate attracted to water Fatty acid repelled by water 2007-2008 Aaaah, one of those structure
More informationII. Active Transport (move molecules against conc. gradient - cell must expend energy) (uses carrier proteins)
Chapter 5 - Homeostasis and Transport I. Passive Transport (no energy from cell required) A. Diffusion 1. movement of molecules from an area of higher concentration to an area of lower concentration a.
More information