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Cell membrane

AP Bio Chp 7

Subject: 
Biology
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Membrane biology
Cell membrane
Transport protein
Osmosis
Membrane potential
Semipermeable membrane
Biological membrane
Membrane protein
Carrier protein
Endocytosis
Turgor pressure
Passive transport

AP Reading Guide Chapter 7: Membrane Structure and Function Fred and Theresa Holtzclaw Name_______________________Period___________ Chapter 7: Membrane Structure and Function 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. Name them. 2. Explain what is meant when we say a molecule is amphipathic. 3. In the 1960s, the Davson-Danielli model of membrane structure was widely accepted. Describe this model and then cite two lines of evidence that were inconsistent with it. 4. Who proposed the fluid mosaic model of membrane structure? When? Describe this model.

AP Bio Chp 5

Subject: 
Biology
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biochemistry
molecules
Genetics
Biomolecules
Biotechnology
Nucleic acid
Protein
Cell membrane
Macromolecule
Lipid
Francis Crick
Ribosome

AP Reading Guide Chapter 5: The Structure and Function of Large Biological Molecules Fred and Theresa Holtzclaw Copyright ? 2010 Pearson Education, Inc. - 1 - Name_______________________Period___________ Chapter 5: The Structure and Function of Large Biological Molecules Concept 5.1 Macromolecules are polymers, built from monomers 1. The large molecules of all living things fall into just four main classes. Name them. 2. Circle the three classes that are called macromolecules. Define macromolecule. 3. What is a polymer? a monomer? 4. Monomers are connected in what type of reaction? What occurs in this reaction? 5. Large molecules (polymers) are converted to monomers in what type of reaction?

quiz 7

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Biology
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Membrane biology
Cell Biology
diffusion
Membrane technology
Transport proteins
Tonicity
Osmosis
Cell membrane
Na+/K+-ATPase
cell
Active transport
Semipermeable membrane

Which of the following statements is NOT true? a. Phospholipids can move laterally in a membrane but rarely move from the extracellular to the intracellular side. b. Plasma membranes are more like a fluid than a solid. c. In a plasma membrane, the hydrophobic portion is oriented to the inside of the membrane. d. Lipid molecules make the cell membrane relatively impermeable to water. e. Saturated phospholipids make a more fluid membrane.

BIO CH 7 TEST

Subject: 
Biology
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Membrane biology
Cell membrane
Biological membrane
Lipid bilayer
Facilitated diffusion
Carrier protein
Membrane potential
Semipermeable membrane
Tonicity
Lipid raft
Osmosis
Red blood cell

Campbell's Biology, 9e (Reece et al.) Chapter 7 Membrane Structure and Function Membranes and membrane transport are fundamental to cellular life. The concepts in this chapter require integration of concepts from previous chapters: the nature of water and hydrophobic versus hydrophilic molecules, the properties of lipid molecules and their role in regulating membrane fluidity, and the roles of proteins and carbohydrates in membrane function. The concepts of ion transport and electrochemical gradients across membranes are important foundations for the following chapters on energy metabolism. Finally, the bulk transport phenomena have important clinical significance in the immune system, during invasion by pathogens, and in cell signaling. Multiple-Choice Questions

CHEMISTRY NOTES

Subject: 
Chemistry
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biochemistry
molecules
Biotechnology
Macromolecule
Polymer chemistry
Biomolecule
Osmosis
Cell membrane

Chemistry of Life Flash Cards http://quizlet.com/13167174/ari-ap-biology-unit-1-the-chemistry-of-life-flash-cards/ Practice Quizzes and Tests http://www.brainbeau.com/index.php/en/ap-biology-online-quizzes-a-tests Macromolecules http://prezi.com/-r8c-fscmffx/ap-bio-chemistry-2-macromolecules/ Atoms, Water and Carbon http://prezi.com/4hefv2hk2bhq/ap-bio-chemistry-1-atoms-water-carbon/ Biochemistry http://classroom.wisd.org/webs/preid/ap_bio_biochemistry_unit.htm Summary of Chemistry http://www.biologycorner.com/APbiology/intro.html Structure and Function of Biological Macromolecules http://www.smcisd.net/webpages/rrandolph/biology.cfm?subpage=17902 Biochemistry Document http://www.cod.edu/people/faculty/fancher/Bio101/Biochem.doc?(document) ?Enzymatic Biochemistry

Cell bio chapter 7

Subject: 
Biology
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Biology
Membrane biology
Active transport
Osmosis
Passive transport
Carrier protein
Membrane potential
Cell membrane
Antiporter
Na+/K+-ATPase
Facilitated diffusion
Symporter
health

Two types of membrane proteins Integral proteins and peripheral proteins Trans membrane protein structure Alpha helix from hydrogen bonds Functions of membrane proteins Transport- one with ATP one without it Enzymes- catalyze biochemical reactions; enzymatic activity Signal transduction Cell-cell recognition- how can a cell determine if the cell is of like kind or like species Intercellular joining- cells adhering to each other to form tissues and then organs when proteins join together Attachment- attach to cellular matrix to form an organ Cell adhesion and Recognition Cells bind to surface molecules on the plasma membrane Carbohydrates vary among Species Individuals Cell types Synthesis of membrane components Glycolipids Glycoproteins

Cell Membranes

Subject: 
Biology
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Biology
Membrane biology
Cell membrane
Lipid bilayer
Semipermeable membrane
Membrane protein
Facilitated diffusion
Carrier protein
Endocytosis
Membrane transport
Vesicle
Biological membrane
health

Cell Membranes Contents: Structure: the basics Fluid mosaic model/freeze fracture technique Membrane fluidity Membrane fluidity and cholesterol The Basics? The plasma membrane separates the living cell from its surroundings Phospholipids make up the majority of the bilayer Phospholipids consists of a hydrophilic phosphate head and two hydrophobic fatty acid tails Phospholipids are amphipathic molecules: containing both a hydrophilic and hydrophobic region The plasma membrane is described by the fluid mosaic model: The membrane is fluid with a variety of ?mosaic? proteins embedded in it The plasma membrane is selectively permeable: Small fat soluble (hydrophobic ? non polar) molecules, can enter the cell through the lipid bilayer (this occurs rapidly) e.g. hydrocarbons

Membrane Structure and Function

Subject: 
Biology
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Biology
Membrane biology
Cell membrane
Lipid bilayer
Membrane transport
Membrane protein
Facilitated diffusion
Biological membrane
Carrier protein
Exocytosis
Active transport
Semipermeable membrane
health

Chapter 7 Membrane Structure and Function Overview: Life at the Edge the plasma membrane is the boundary that separates the living cell from its nonliving surroundings selectively permeable: allows some substances to cross it more easily than others Concept 7.1: Cellular membranes are fluid mosaics of lipids and proteins a phospholipid is an amphipathic molecule, meaning it has both hydrophilic and hydrophobic regions head composed of phosphate group attached to one carbon of glycerol two fatty acid tails are hydrophobic in the fluid mosaic model, the membrane is a fluid structure with a ?mosaic? of various proteins embedded in or attached to a bilayer of phospholipids Membrane Models: Scientific Inquiry phospholipids are the most abundant lipid in the plasma membrane

Campbell Biology Chapter 7 Outline

Subject: 
Biology
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Biology
Membrane biology
Cell membrane
Lipid bilayer
Membrane transport
Membrane protein
Semipermeable membrane
Biological membrane
Facilitated diffusion
Carrier protein
Passive transport
Osmosis
health

Mica Piro Chapter 7: Membrane Structure & Function Selective permeability: the plasma membrane allows some substances to cross it more easily than others Cellular Membranes are Fluid Mosaics of Lipids and Proteins (7.1) The ability of phospholipids to form membranes is inherent in their molecular structure?a phospholipid is an amphipathic molecule (has both a hydrophilic region and a hydrophobic region) A phospholipid bilayer can exist as a stable boundary between 2 aqueous compartments because the molecular arrangement shelters the hydrophobic tails of the phospholipids from water while exposing the hydrophilic heads to the water Most membrane proteins are amphipathic

AP BIO Chapter 07

Subject: 
Biology
Rating: 
0
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Tags: 
Biology
Membrane biology
Cell membrane
Lipid bilayer
Membrane potential
Osmosis
Facilitated diffusion
Lipid raft
Red blood cell
Biological membrane
Semipermeable membrane
Membrane protein
health

Campbell's Biology, 9e (Reece et al.) Chapter 7 Membrane Structure and Function Membranes and membrane transport are fundamental to cellular life. The concepts in this chapter require integration of concepts from previous chapters: the nature of water and hydrophobic versus hydrophilic molecules, the properties of lipid molecules and their role in regulating membrane fluidity, and the roles of proteins and carbohydrates in membrane function. The concepts of ion transport and electrochemical gradients across membranes are important foundations for the following chapters on energy metabolism. Finally, the bulk transport phenomena have important clinical significance in the immune system, during invasion by pathogens, and in cell signaling. Multiple-Choice Questions

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