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Cell membrane

AP BIO CHP 7 CAMPBELL BIOLOGY 9e

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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

Campbell AP Bio Study Guide Chapter 7

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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

Cellular signaling and the cell membrane

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Chapter 5: Membrane Transport and Cell Signaling Amphiphatic- refers to something that has both hydrophilic and hydrophobic regions the cell membrane proteins Fluidity Low Temperatures-less fluid because the phospholipids pack together tightly Factors that Affect Fluidity: Amount of phospholipids- phospholipids have kinks in the tails due to their hydrogen bonds which make them harder to pack Cholesterol- inhibits the packing of the phospholipid tails at LOW TEMPERATURE. AT HIGH TEMPERATURE, it solidifies the membrane because it inhibits the movement of tails Proteins in the Membrane Intergal-penetrate the membrane, hydrophobic exterior, hydrophilic interior Peripheral-lie on either side of the membrane Major Protein Functions: -Transport-allows materials to diffuse

campbell_ap_bio_practice_test_ch7

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Membrane biology

Integral membrane proteins

Biological matter

Turgor pressure

Semipermeable membrane

Carrier protein

Chapter?7 Membrane?Structure?and?Function Multiple-Choice?Questions 1) Who?was/were?the?first?to?propose?that?cell?membranes?are?phospholipid?bilayers? A) H.?Davson?and?J.?Danielli B) I.?Langmuir C) C.?Overton D) S.?Singer?and?G.?Nicolson E) E.?Gorter?and?F.?Grendel Answer: E Topic: Concept?7.1 Skill: Knowledge/Comprehension 2) Who?proposed?that?membranes?are?a?phospholipid?bilayer?between?two?layers?of?hydrophilic?proteins? A) H.?Davson?and?J.?Danielli B) I.?Langmuir C) C.?Overton D) S.?Singer?and?G.?Nicolson E) E.?Gorter?and?F.?Grendel Answer: A Topic: Concept?7.1 Skill: Knowledge/Comprehension 3) Who?proposed?that?the?membrane?is?a?mosaic?of?protein?molecules?bobbing?in?a?fluid?bilayer?of?phospholipids? A) H.?Davson?and?J.?Danielli B) I.?Langmuir C) C.?Overton

View of the Cell

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Membrane biology

Biological membrane

Passive transport

Chapter 7 A View of the Cell The Discovery of Cells The History of the Cell Theory The first person to record looking at water under a microscope was Anton van Leeuwenhoek. Robert Hooke used a compound light microscope to study cork, the dead cells of oak bark. Matthias Schleiden studied plants under a microscope and concluded that all plants are made of cells. Theodore Schwann studied animal cells and concluded that all animals are made of cells. Rudolf Virchow hypothesized that cells divide to form new cells & all cells come from preexisting cells The Cell Theory: All organisms are composed of one or more cells. The cell is the basic unit of organization of organisms. All cells come from preexisting cells.

Campbell Biology Chapter 5 Study Guide

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Name Period Chapter 5: The Structure and Function of Large Biological Molecules Concept 5.1 Macromolecules are polymers, built from monomers The large molecules of all living things fall into just four main classes. Name them. Circle the three classes that are called macromolecules. Define macromolecule. What is a polymer? What is a monomer? Monomers are connected in what type of reaction? What occurs in this reaction? Large molecules (polymers) are converted to monomers in what type of reaction? The root words of hydrolysis will be used many times to form other words you will learn this year. What does each root word mean? hydro? lysis Consider the following reaction: C6H12O6 + C6H12O6??C12H22O11

Biology essay

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cellular respiration

Plant physiology

Anaerobic respiration

Name_______________________ Biology Content Knowledge Exam Part 2: Free Response SCED 6416 Directions: In essay form, write your response to all parts of each question. Three questions, total time allowed is 75 minutes. Membranes are important structural features of cells.?(a) Describe how membrane structure is related to the transport of materials across a membrane.?(b) Describe the role of membranes in the synthesis of ATP in either respiration or photosynthesis. 2) An organism is heterozygous at two genetic loci on different chromosomes. | | | | | | --|B --|b | | | | --|A --|a

Chapter 7: Cellular Structure and Function

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Membrane biology

Transport phenomena

Passive transport

Semipermeable membrane

Biological membrane

Chapter 7: Cellular Structure and Function THE CELL THEORY -All organisims are composed of one or more cells -The cell is the basic unit of structure and organization of organisms -All cells come from pre-existing cells PROKARYOTIC CELL -Simple structure -Contains a plasma membrane -Does not contain membrane bound organelles EUKARYOTIC CELL -Contains a plasma membranre -Contains membrane-bound organelles PLASMA MEMBRANE -Thin, flexible boundary between the cell and its enviornment -Allows nutrients into the cell -Allows waste to leave the cell SELECTIVE PERMEABILITY -The plasma membrane controls the movement of substances into and out of the cell -The plasma membrane is composed of the phospholipid bilayer FLUID MOSAIC MODEL

Bio_160_Lecture2

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Membrane biology

Endomembrane system

Cellular compartment

Endoplasmic reticulum

Biological membrane

Cells, Membranes and Cellular Reproduction A Tour of the Cell ? Cell Structure & Function ? Chapter 4 ? Compared to the images generated by the Hubble telescope or the planetary probes like Voyager, telescope images are limited. ? Same with looking at cells under a light microscope, view is limited. ?Which of the following cell parts are visible under a light microscope? ? Cell membrane - yes. ? Large macromolecules - no. ? Microtubules - no. ? Mitochondria - maybe just barely. ? Many bacteria - yes ? The microscopic size of most cells ensures a sufficient surface area across which nutrients and wastes can move to service the cell volume ? A small cell has a greater ratio of surface area to volume than a large cell of the same shape 30 ?m 10 ?m

exam 2.2

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Membrane biology

cellular respiration

Integral membrane proteins

Signal transduction

Endomembrane system

Introduction to Cell Biology Name: October 28, 2010 Student ID: Exam II - Version 1 Section 1: Complete each sentence with one of the two answers (A / B) (3 points each). 1. donate high-energy electrons for synthesis of ATP. A) NAD+ B) NADH 2. Modern eucaryotes depend on mitochondria to generate most of the cell?s ATP. A single molecule of glucose can generate molecules of ATP. A) 30 B) 36 3. gradient serves as an energy store and is used to drive the synthesis of ATP by the ATP synthase. A) Sodium B) Proton 4. The chemiosmotic mechanism of ATP synthesis in mitochondria is called . A) oxidative phosphorylation B) electron transfer 5. The cytochrome oxidase is a protein complex that receive electron from . A) cytochrome b-c1 complex

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