Ch. 7 Cell Membrane BIOL 222
|
|
- Cory Norman
- 6 years ago
- Views:
Transcription
1 Ch. 7 Cell Membrane BIOL 222 Overview: Plasma Membrane Plasma membrane boundary that separates the living cell from its surroundings Selec4ve permeability Allowance of some substances to cross more easily than others Cell Membrane Model Fluid mosaic model Membrane is a fluid structure with a mosaic of various proteins embedded in it Phospholipids most abundant lipid in the plasma membrane amphipathic molecules contain hydrophobic and hydrophilic regions
2 Fig. 7 2 Hydrophilic head WATER Hydrophobic tail WATER Phospholipids The Fluidity of Membranes Can move within the bilayer Most of the lipids, and some proteins, drii laterally Rarely does a molecule flip flop transversely across the membrane Lateral movement ( 10 7 times per second) Flip-flop ( once per month) Membrane Proteins Membrane collage of different proteins embedded in the fluid matrix of the lipid bilayer Proteins determine most of the membrane s specific funcoons Transport CommunicaOon Anchoring
3 Fig. Fig Fibers of extracellular matrix (ECM) Carbohydrate Glycoprotein Glycolipid EXTRACELLULAR SIDE OF MEMBRANE Cholesterol Microfilaments of cytoskeleton Peripheral proteins Integral protein CYTOPLASMIC SIDE OF MEMBRANE Membrane Proteins Peripheral proteins Integral proteins bound to the surface of the membrane Penetrate the hydrophobic core Integral proteins that span the membrane are called transmembrane proteins Hydrophobic regions of an integral protein consist of one or more stretches of nonpolar amino acids oien coiled into alpha helices Fig. Fig N-terminus C-terminus α Helix EXTRACELLULAR SIDE CYTOPLASMIC SIDE
4 Six major funcoons of membrane proteins: Transport EnzymaOc acovity Signal transducoon Cell cell recognioon Intercellular joining Membrane Proteins AXachment to the cytoskeleton and extracellular matrix (ECM) Fig. 7 9 Signaling molecule Enzymes Receptor (a) Transport ATP (b) Enzymatic activity Signal transduction (c) Signal transduction Glycoprotein (d) Cell-cell recognition (e) Intercellular joining (f) Attachment to the cytoskeleton and extracellular matrix (ECM) Membrane carbohydrates Membrane Carbohydrates Used by cells to recognize each other By binding recognioon proteins to surface Glycolipids carbohydrates Carbohydrates covalently bonded to lipids Glycoproteins Carbohydrates bonded to proteins vary among species, individuals, and even cell types in an individual
5 Synthesis and Sidedness of Membranes Membranes have disonct inside and outside faces Asymmetrical distribuoon Proteins Lipids Associated carbohydrates Determined when the membrane is built by the ER and Golgi apparatus Components on the inside of ER or Golgi vesicle end up on exterior of cell membrane Fig ER 1 Transmembrane glycoproteins Secretory protein Glycolipid Golgi 2 apparatus Vesicle Secreted protein 3 4 Plasma membrane: Cytoplasmic face Extracellular face Transmembrane glycoprotein Membrane glycolipid The Permeability of the Lipid Bilayer Hydrophobic (nonpolar) molecules Dissolve in the lipid bilayer and pass through the membrane rapidly Such as hydrocarbons Polar molecules Do not cross the membrane easily Repelled by inner hydrophobic region Such as sugars
6 Transport Proteins Transport proteins Allow passage of hydrophilic substances across the membrane channel proteins Type of transport protein Have a hydrophilic channel that certain molecules or ions can use as a tunnel Aquaporins Facilitate the passage of water Carrier proteins Bind to molecules and change shape to shuxle them across the membrane Transport Proteins Specific for the substance it moves Transport Diffusion Tendency for molecules to spread out evenly into the available space Due to Brownian movement Dynamic equilibrium As many molecules cross one way as cross in the other direcoon
7 Fig Molecules of dye Membrane (cross section) WATER Equilibrium (a) Diffusion of one solute (b) Diffusion of two solutes Equilibrium Equilibrium Diffusion Substances diffuse down their concentra4on gradient difference in concentraoon of a substance from one area to another Passive transport No energy input required Osmosis Osmosis diffusion of water across a selecovely permeable membrane from the region of lower solute concentraoon to the region of higher solute concentraoon Water will follow the solutes
Ch. 7 Cell Membrane BIOL 222
Ch. 7 Cell Membrane BIOL 222 Overview: Plasma Membrane Plasma boundary that separates the living cell from its surroundings Selec4ve permeability Allowance of some substances to cross more easily than
More informationMembrane Structure and Function
Chapter 7 Membrane Structure and Function PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from
More informationMembrane Structure and Function
Chapter 7 Membrane Structure and Function PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from
More informationBIOLOGY. Membrane Structure and Function CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson
CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson 7 Membrane Structure and Function Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick Life at the Edge The plasma
More informationMembrane Structure and Function
Chapter 7 Membrane Structure and Function PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from
More informationMembrane Structure and Function
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 7 Membrane Structure and Function
More informationMembrane Structure and Function
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 7 Membrane Structure and Function
More informationWhat do you remember about the cell membrane?
Cell Membrane What do you remember about the cell membrane? Cell (Plasma) Membrane Separates the internal environment of the cell from the external environment All cells have a cell membrane Selectively
More informationMembrane Structure and Function
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 7 Membrane Structure and Function
More informationChapter 7: Membrane Structure & Function
Chapter 7: Membrane Structure & Function 1. Membrane Structure 2. Transport Across Membranes 1. Membrane Structure Chapter Reading pp. 125-129 What are Biological Membranes? Hydrophilic head WATER They
More informationChapter 7: Membrane Structure & Function. 1. Membrane Structure. What are Biological Membranes? 10/21/2015. Why phospholipids? 1. Membrane Structure
Chapter 7: Membrane Structure & Function 1. Membrane Structure 2. Transport Across Membranes 1. Membrane Structure Chapter Reading pp. 125-129 What are Biological Membranes? Hydrophilic head WATER They
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 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 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 informationBoundary Lipid bilayer Selectively Permeable Fluid mosaic of lipids and proteins Contains embedded proteins
1 Boundary Lipid bilayer Selectively Permeable Fluid mosaic of lipids and proteins Contains embedded proteins 2 Phosphate head hydrophilic Fatty acid tails hydrophobic Amphipathic Phosphate attracted to
More informationMembrane Structure and Function
Chapter 7 LECTURE RESENTATIONS For CAMBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, eter V. Minorsky, Robert B. Jackson Membrane Structure and Function
More informationMembrane Structure and Function. Cell Membranes and Cell Transport
Membrane Structure and Function Cell Membranes and Cell Transport 1895 1917 1925 Membrane models Membranes are made of lipids Phospholipids can form membranes Its actually 2 layers - there are proteins
More informationLecture Series 4 Cellular Membranes
Lecture Series 4 Cellular Membranes Reading Assignments Read Chapter 11 Membrane Structure Review Chapter 21 pages 709-717 717 (Animal( Cell Adhesion) Review Chapter 12 Membrane Transport Review Chapter
More informationLecture Series 5 Cellular Membranes
Lecture Series 5 Cellular Membranes Cellular Membranes A. Membrane Composition and Structure B. Animal Cell Adhesion C. Passive Processes of Membrane Transport D. Active Transport E. Endocytosis and Exocytosis
More informationA. Membrane Composition and Structure. B. Animal Cell Adhesion. C. Passive Processes of Membrane Transport. D. Active Transport
Cellular Membranes A. Membrane Composition and Structure Lecture Series 5 Cellular Membranes B. Animal Cell Adhesion E. Endocytosis and Exocytosis A. Membrane Composition and Structure The Fluid Mosaic
More informationMembrane Structure and Function. Selectively permeable membranes are key to the cell's ability to function
Membrane Structure and Function Selectively permeable membranes are key to the cell's ability to function Amphipathic Molecules Have both hydrophilic and hydrophobic regions Phospholipids have hydrophilic
More informationCellular membranes are fluid mosaics of lipids and proteins.
Study Guide e Plasma Membrane You should be able to write out the definitions to each of the following terms in your own words: plasma membrane fluid mosaic integral proteins peripheral proteins receptor
More informationMembrane Structure and Function
Chapter 7 LECTURE RESENTATIONS For CAMBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, eter V. Minorsky, Robert B. Jackson Membrane Structure and Function
More informationCh7: Membrane Structure & Function
Ch7: Membrane Structure & Function History 1915 RBC membranes studied found proteins and lipids 1935 membrane mostly phospholipids 2 layers 1950 electron microscopes supported bilayer idea (Sandwich model)
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 informationMEMBRANE STRUCTURE AND FUNCTION
MEMBRANE STRUCTURE AND FUNCTION selective permeability permits some substances to cross it more easily than others Figure 7.1 Scientists studying the plasma Reasoned that it must be a phospholipid bilayer
More informationThe Cell Membrane (Ch. 7)
The Cell Membrane (Ch. 7) Phospholipids Phosphate head hydrophilic Fatty acid tails hydrophobic Arranged as a bilayer Phosphate attracted to water Fatty acid repelled by water Aaaah, one of those structure
More informationMembrane Structure and Function
Chapter 7 Membrane Structure and Function PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from
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 informationCONCEPT 5.1: Cellular membranes are fluid mosaics of lipids and proteins
Ch 5 Membrane Transport and Signaling Overview The plasma separates the living cell from its surroundings The plasma exhibits selective permeability, allowing some substances to cross it more easily than
More informationChapter 7 Membrane Structure and Function. The plasma membrane surrounds the living cells from their surroundings.
Chapter 7 Membrane Structure and Function The plasma membrane surrounds the living cells from their surroundings. Only 8 nm thick (8,000 to equal the thickness of a sheet of paper) Controls passage of
More informationWhat is the Surface Area to Volume Ratio of a sphere with a radius of 5mm? Of 10 mm? What sphere can eliminate wastes and move materials quicker?
Warm Up What is the Surface Area to Volume Ratio of a sphere with a radius of 5mm? Of 10 mm? What sphere can eliminate wastes and move materials quicker? Cell Membrane and Function Chapter 7 Big Idea #2:
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 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 informationMembrane Structure & Function (Learning Objectives)
Membrane Structure & Function (Learning Objectives) Review the basic function and biochemical composition of the plasma membrane. Learn the fluid state of membranes and the movement of its lipids and proteins.
More informationCell Membrane Structure and Function. What is the importance of having a cell membrane?
Cell Membrane Structure and Function What is the importance of having a cell membrane? I. Membrane Structure a. Membranes contain proteins, lipids, and carbohydrates (which are all types of macromolecules)
More informationMembrane Structure and Membrane Transport of Small Molecules. Assist. Prof. Pinar Tulay Faculty of Medicine
Membrane Structure and Membrane Transport of Small Molecules Assist. Prof. Pinar Tulay Faculty of Medicine Introduction Cell membranes define compartments of different compositions. Membranes are composed
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 informationMain Functions maintain homeostasis
The Cell Membrane Main Functions The main goal is to maintain homeostasis. Regulates materials moving in and out of the cell. Provides a large surface area on which specific chemical reactions can occur.
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 informationConcept 7.1: Cellular membranes are fluid mosaics of lipids and proteins
Concept 7.1: Cellular membranes are fluid mosaics of lipids and proteins Lipids: Non-polar substances such as fat that contain C, H, O. Phospholipids: Lipid with phosphate group, very abundant in plasma
More informationMembrane Structure and Function
Membrane Structure and Function What You Must Know: Why membranes are selectively permeable. The role of phospholipids, proteins, and carbohydrates in membranes. How water will move if a cell is placed
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 informationThe Cell Membrane. Phospholipids. Chapter 7: Arranged as a Phospholipid bilayer. Cell membrane defines cell! Cell membrane separates living cell from
Chapter 7: The Cell Membrane Phospholipids! Amphipathic Molecules: " Phosphate head! hydrophilic " Fatty acid tails! Hydrophobic! Arranged as a bilayer Phosphate attracted to water Fatty acid repelled
More informationChapter 7: Membrane Structure and Function
Chapter 7: Membrane Structure and Function Concept 7.1 Cellular membranes are fluid mosaics of lipids and proteins 1. Phospholipids are amphipathic. Explain what this means. Name Period Amphipathic means
More informationMembrane Transport and Cell Signaling
CAMPBELL BIOLOGY IN FOCUS URRY CAIN WASSERMAN MINORSKY REECE 5 Membrane Transport and Cell Signaling Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge, Simon Fraser University SECOND EDITION
More informationChapter 7 Membrane Structure and Function
Chapter 7 Membrane Structure and Function CELL MEMBRANE: Basics: Regulates flow in and out of the cell Composed of phospholipids and proteins - some carbohydrates and lipids SELECTIVELY PERMEABLE - allows
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 informationLecture Series 4 Cellular Membranes. Reading Assignments. Selective and Semi-permeable Barriers
Lecture Series 4 Cellular Membranes Reading Assignments Read Chapter 11 Membrane Structure Review Chapter 12 Membrane Transport Review Chapter 15 regarding Endocytosis and Exocytosis Read Chapter 20 (Cell
More informationDiffusion across cell membrane
The Cell Membrane and Cellular Transport Diffusion across cell membrane Cell membrane is the boundary between inside & outside separates cell from its environment Can it be an impenetrable boundary? NO!
More informationCOR 011 Lecture 9: ell membrane structure ept 19, 2005
COR 011 Lecture 9: ell membrane structure ept 19, 2005 Cell membranes 1. What are the functions of cell membranes? 2. What is the current model of membrane structure? 3. Evidence supporting the fluid mosaic
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 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 informationChapter 7: Membrane Structure and Function
Chapter 7: Membrane Structure and Function Name Period Concept 7.1 Cellular membranes are fluid mosaics of lipids and proteins 1. The large molecules of all living things fall into just four main classes.
More information5 Membrane Transport and Cell Signaling
CAMPBELL BIOLOGY IN FOCUS Urry Cain Wasserman Minorsky Jackson Reece 5 Membrane Transport and Cell Signaling Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge Overview: Life at the Edge
More informationLipids are macromolecules, but NOT polymers. They are amphipathic composed of a phosphate head and two fatty acid tails attached to a glycerol
d 1 2 Lipids are macromolecules, but NOT polymers. They are amphipathic composed of a phosphate head and two fatty acid tails attached to a glycerol backbone. The phosphate head group is hydrophilic water
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 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 informationCell membranes. Stef Elorriaga 4/11/2016 BIO102
Cell membranes Stef Elorriaga 4/11/2016 BIO102 Announcements Lab report 2 is due now Quiz 2 is on Wednesday on cells, part of the cells, plasma membrane, and enzymes Outline of the day Activity on the
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 informationI. Fluid Mosaic Model A. Biological membranes are lipid bilayers with associated proteins
Lecture 6: Membranes and Cell Transport Biological Membranes I. Fluid Mosaic Model A. Biological membranes are lipid bilayers with associated proteins 1. Characteristics a. Phospholipids form bilayers
More informationChapter 7: Membrane Structure and Function. Key Terms:
Key Terms: Selectively permeable Fluid mosaic model Amphipathic Phospholipid Bilayer Hydrophilic Hydrophobic Phosphate head Fatty acid tail Davson-Danielli Singer-Nicolson Freeze-Fracture EM Unsaturated
More informationLecture Series 4 Cellular Membranes
Lecture Series 4 Cellular Membranes Reading Assignments Read Chapter 11 Membrane Structure Review Chapter 12 Membrane Transport Review Chapter 15 regarding Endocytosis and Exocytosis Read Chapter 20 (Cell
More informationMembrane Structure and Function
Membrane Structure and Function Check Your Gummy Bears Ø Take Day One measurements l Same measurements you took yesterday Ø What type solution was the gummy bear in? Hyper, Hypo, or Isotonic? Ø Put your
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 informationMembrane Structure and Function
Chapter 7 Membrane Structure and Function Lecture Outline Overview: Life at the Edge The plasma membrane separates the living cell from its nonliving surroundings. This thin barrier, 8 nm thick, controls
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 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 informationMembrane Structure and Function
BIOL1040 Page 1 Membrane Structure and Function Friday, 6 March 2015 2:58 PM Cellular Membranes Fluid mosaics of lipids and proteins Phospholipids - abundant Phospholipids are amphipathic molecules (has
More informationMEMBRANE STRUCTURE AND TRAFFIC. Cell Membrane Structure and Function
MEMBRANE STRUCTURE AND TRAFFIC Cell Membrane Structure and Function 4.1 How Is the Structure of a Membrane Related to Its Function? 4.1.1 The Plasma Membrane Isolates the Cell While Allowing Communication
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 informationMEMBRANE STRUCTURE & FUNCTION
MEMBRANE STRUCTURE & FUNCTION Chapter 8 KEY CONCEPTS Cellular s are fluid mosaics of lipids and proteins Membrane structure results in selective permeability Passive transport is diffusion of a substance
More informationComprehensive and Easy Course Notes for BIOL1040 Exams and Assessment
Comprehensive and Easy Course Notes for BIOL1040 Exams and Assessment MODULE 1: PRINCIPLES OF CELL FUNCTION Membrane Structure & Function Cellular membranes are fluid mosaics of lipids and proteins Phospholipids
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 informationBiology 2201 Unit 1 Matter & Energy for Life
Biology 2201 Unit 1 Matter & Energy for Life 2.2 Cell Membrane Structure Primary Membrane Function: Homeostasis Conditions in the cell must remain more or less constant under many different conditions
More informationChapter 9 - Biological Membranes. Membranes form a semi-permeable boundary between a cell and its environment.
Chapter 9 - Biological Membranes www.gsbs.utmb.edu/ microbook/ch037.htmmycoplasma Membranes form a semi-permeable boundary between a cell and its environment. Membranes also permit subcellular organization
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 informationCell Membranes. Q: What components of the cell membrane are in a mosaic pattern?
Cell Membranes The cell / plasma membrane is. Selective in that it allows things in and some things out of the cell. Recall that phospholipids have hydrophobic and hydrophilic. The term to describe this
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 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 information10/28/2013. Double bilayer of lipids with imbedded, dispersed proteins Bilayer consists of phospholipids, cholesterol, and glycolipids
Structure of a Generalized Cell MEMBRANES Figure 3.1 Plasma Membrane Fluid Mosaic Model Separates intracellular fluids from extracellular fluids Plays a dynamic role in cellular activity Glycocalyx is
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 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 informationBiology Kevin Dees. Chapter 7 Membrane Structure and Function
Chapter 7 Membrane Structure and Function The plasma membrane surrounds the living cells from their surroundings. Only 8 nm thick (8,000 to equal the thickness of a sheet of paper) Controls passage of
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 informationThe Cell Membrane. Usman Sumo Friend Tambunan Arli Aditya Parikesit. Bioinformatics Group Faculty of Mathematics and Science University of Indonesia
The Cell Membrane Usman Sumo Friend Tambunan Arli Aditya Parikesit Bioinformatics Group Faculty of Mathematics and Science University of Indonesia Overview Cell membrane separates living cell from nonliving
More informationBIOL 158: BIOLOGICAL CHEMISTRY II
BIOL 158: BIOLOGICAL CHEMISTRY II Lecture 1: Membranes Lecturer: Christopher Larbie, PhD Introduction Introduction Cells and Organelles have membranes Membranes contain lipids, proteins and polysaccharides
More informationMembrane transport. Pharmacy Dr. Szilvia Barkó
Membrane transport Pharmacy 04.10.2017 Dr. Szilvia Barkó Cell Membranes Cell Membrane Functions Protection Communication Import and and export of molecules Movement of the cell General Structure A lipid
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 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 informationCELL MEMBRANES. CELL MEMBRANE- Structure and Function
BIOLOGY 12 CELL MEMBRANES NAME: INTRODUCTION 1. The cell membrane the passage of molecules into and out of the cell. 2. Some types of molecules, particularly molecules, pass freely across the cell membrane
More informationCell Membranes Valencia college
6 Cell Membranes Valencia college 6 Cell Membranes Chapter objectives: The Structure of a Biological Membrane The Plasma Membrane Involved in Cell Adhesion and Recognition Passive Processes of Membrane
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 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 informationStructure & Function of Cells
Anatomy & Physiology 101-805 Unit 4 Structure & Function of Cells Paul Anderson 2011 Anatomy of a Generalised Cell Attached or bound ribosomes Cilia Cytosol Centriole Mitochondrion Rough endoplasmic reticulum
More informationLipids and Membranes
Lipids and Membranes Presented by Dr. Mohammad Saadeh The requirements for the Pharmaceutical Biochemistry I Philadelphia University Faculty of pharmacy Biological membranes are composed of lipid bilayers
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 informationPlasma Membrane Structure and Function
Plasma Membrane Structure and Function Chapter 7 Image from: http://www.biologie.uni-hamburg.de/b-online/ge22/03.gif Slide show modified from: http://www.explorebiology.com/pptap/2005/ http://facstaff.bloomu.edu/gdavis/links%20100.htm
More informationUnit 1 Matter & Energy for Life
Unit 1 Matter & Energy for Life Chapter 2 Interaction of Cell Structure Biology 2201 Primary Membrane Function: Homeostasis Conditions in the cell must remain more or less constant under many different
More information