Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 7, Problem 7.3PS
Wrong Again. For each of the following false statements, change the statement to make it true and explain your reasoning.
(a) Because membranes have a hydrophobic interior, polar and charged molecules cannot pass through membranes.
(b) Proteins typically transmit signals from the outside of the cell to the cytoplasm by flip-flopping from the outer membrane monolayer to the inner monolayer.
(c) O-linked and N-linked glycoproteins are formed when sugar chains are attached to the oxygen and nitrogen atoms of the peptide bonds in proteins.
(d) The three-dimensional structure of a protein cannot be determined unless the protein can be isolated from cells in pure form.
(e) You would expect membrane lipids from tropical plants such as palm and coconut to have short-chain fatty acids with multiple C 
C double bonds.
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TRUE or FALSE:
Eukaryotic cells feature membrane bound organelles that create specialized compartments within a single cell. The primary structure of the outer cell membrane is a double layer but the membranes that enclose organelles are only single layer.
Choose.
1. Which of the following is one of the ways that will keep the membranes of such vegetables to remain fluid when it is extremely cold?
A) by increasing the percentage of unsaturated phospholipids in the membrane
B) by decreasing the number of hydrophobic proteins in the membrane
C) by increasing the percentage of cholesterol molecules in the membrane
D) by co-transport of glucose and hydrogen
2. After a membrane freezes and then defrost, it often turns out to be loose to solutes. The best logical reason for this is that:
A) the lipid bilayer loses its fluidity when it freezes.
B) transport proteins become nonfunctional during freezing
C) the integrity of the lipid bilayer is broken when the membrane freezes
D) the…
Chapter 7 Solutions
Becker's World of the Cell (9th Edition)
Ch. 7 - Which functions of a membrane would be compromised...Ch. 7 - Which of the three historical strands forming...Ch. 7 - Lipids form the fluid part of the fluid mosaic...Ch. 7 - A researcher has carried out a PAGE experiment to...Ch. 7 - Proteins can be attached to the membrane in a...Ch. 7 - Functions of Membranes. For each of the following...Ch. 7 - Elucidation of Membrane Structure. Each of the...Ch. 7 - Wrong Again. For each of the following false...Ch. 7 - QUANTITATIVE Gorter and Grendel Revisited. Gorter...Ch. 7 - Prob. 7.5PS
Ch. 7 - QUANTITATIVE Thats About the Size of It. From...Ch. 7 - Temperature and Membrane Composition. Which of the...Ch. 7 - Membrane Fluidity and Temperature. The effects of...Ch. 7 - The Little Bacterium That Cant. Acholeplasma...Ch. 7 - Hydropathy: The Plot Thickens. A hydropathy plot...Ch. 7 - Problem Set Inside or Outside? From Figure 7-22,...Ch. 7 - Prob. 7.12PS
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