Campbell Biology
3rd Edition
ISBN: 9781269937832
Author: Reece, Urry, Cain, Wasserman, Minorsky, Jackson
Publisher: Pearson Custom Publishing
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Textbook Question
Chapter 7, Problem 3TYU
Which of the following factors would tend to increase membrane fluidity? 0
- (A) a greater proportion of unsaturated phospholipids
- (B) a greater proportion of saturated phospholipids
- (C) a lower temperature
- (L)) a relatively high protein content in the membrane
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What TWO factors keep integral trans-membrane proteins embedded firmly within the lipid bilayer?
Which of the following factors would tend to increasemembrane fluidity?(A) a greater proportion of unsaturated phospholipids(B) a greater proportion of saturated phospholipids(C) a lower temperature(D) a relatively high protein content in the membrane
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Chapter 7 Solutions
Campbell Biology
Ch. 7.1 - VISUAL SKILLS Carbohydrates are attached to...Ch. 7.1 - WHAT IF? How would the membrane lipid composition...Ch. 7.2 - What property allows O2 and CO2 to cross a lipid...Ch. 7.2 - VISUAL SKILLS Examine Figure 7.2. Why is a...Ch. 7.2 - MAKE CONNECTIONS Aquaporins exclude passage of...Ch. 7.3 - How do you think a cell performing cellular...Ch. 7.3 - WHAT IF? If a Paramecium swims from a hypotonic...Ch. 7.4 - Sodium-potassium pumps help nerve cells establish...Ch. 7.4 - VISUAL SKILLS Compare the sodium-potassium pump...Ch. 7.4 - MAKE CONNECTIONS Review the characteristics of...
Ch. 7.5 - As a cell grows, its plasma membrane expands. Does...Ch. 7.5 - DRAW IT Return to Figure 7.9, and circle a patch...Ch. 7.5 - Prob. 3CCCh. 7 - In what ways are membranes crucial to life?Ch. 7 - How do aquaporins affect the permeability of a...Ch. 7 - What happens to a cell placed in a hypertonic...Ch. 7 - ATP is not directly involved in the functioning of...Ch. 7 - Which type of endocytosis involves the binding of...Ch. 7 - In what way do the membranes of a eukaryotic Cell...Ch. 7 - According to the fluid mosaic model of membrane...Ch. 7 - Which of the following factors would tend to...Ch. 7 - Which of the following processes includes all the...Ch. 7 - Prob. 5TYUCh. 7 - DRAW IT An artificial "cell" consisting of an...Ch. 7 - EVOLUTION CONNECTION Paramecium and other...Ch. 7 - Prob. 8TYUCh. 7 - SCIENCE, TECHNOLOGY, AND SOCIETY Extensive...Ch. 7 - WRITE ABOUT A THEME: INTERACTIONS A human...Ch. 7 - SYNTHESIZE YOUR KNOWLEDGE In the supermarket,...
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- Knowing that there is constant turnover of phospholipids in a cell’s membrane and that new phospholipids are regularly synthesized, what strategy could a cell (or organism) use to maintain membrane fluidity and integrity in: A) Cold temperatures? B) Hot temperatures?arrow_forwardWhat is the difference between a semi-permeable mem- brane and a selectively permeable membrane? What does the semi permeable and selectively permeable let pass through?arrow_forwardWhat factors affect the degree of membrane fluidity?arrow_forward
- Which of the following factors would tend to increase membrane fluidity? A greater proportion of unsaturated phospholipids A relatively high protein content in the membrane A greater proportion of saturated phospholipids A lower temperaturearrow_forwardWhat is membrane fluidity?arrow_forwardWhy the composition of biological membrane varies ? Should it be helpful in membrane physiology ?arrow_forward
- What two properties must a substance typically have to be capable of simple diffusion across a cell membrane? If a substance does not have these properties, can it still cross a cell membrane? How?arrow_forwardWhat molecule should cells insert their cell membrane to ensure membrane fluidity?arrow_forwardIdentify the three different types of membrane proteins.arrow_forward
- Which of the following best describes an integral membrane protein? A.A protein that has an extracellular domain, a membrane-spanning domain that spans the lipid bilayer of the plasma membrane, and an intracellular domain. B.A protein that peripherally associates with the membrane via ionic interactions another protein embedded in the membrane. C.A protein that is soluble in the cytoplasm. D.A protein that peripherally associates with the membrane via ionic interactions between polar charged amino acids and the polar head groups of the phospholipids in the membrane.arrow_forwardWhich of the following statements is true of membrane proteins? a) They are suspended on the surface of the membrane. b) They are partly embedded in the bilayer c) They span across the bilayer and project from both sides d) Any of these are true, depending on the specific membrane protein.arrow_forwardWhy change one type of membrane anchor for another?arrow_forward
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license