Modified Mastering Biology With Pearson Etext -- Standalone Access Card -- For Biological Science (7th Edition)
7th Edition
ISBN: 9780135276556
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 6, Problem 7TYU
In terms of structure, how do channel proteins differ from carrier proteins?
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Chapter 6 Solutions
Modified Mastering Biology With Pearson Etext -- Standalone Access Card -- For Biological Science (7th Edition)
Ch. 6 - 1. How do the phospholipids in archaea differ from...Ch. 6 - If a solution surrounding a cell is hypertonic...Ch. 6 - Prob. 3TYKCh. 6 - 4. Integral membrane proteins are anchored in...Ch. 6 - 5. Cooking oil lipids consist of long, unsaturated...Ch. 6 - Prob. 6TYUCh. 6 - 7. In terms of structure, how do channel proteins...Ch. 6 - 9. PROCESS OF SCIENCE In an experiment, you create...Ch. 6 - Prob. 11PIATCh. 6 - Prob. 12PIAT
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- The three fundamental classes of proteins involved in transport across membranes are: i) channelsii) pumpsiii) exchangers For each class, describe its essential features, explain how transport is accomplished and name at least one representative example.arrow_forward(a) Describe permeability of a phospholipid bilayer for the following molecules. Use terms: non-permeable, high permeability, medium permeability. N2, O2, Na+, glucose, sucrose (disaccharide), glycogen, H2O, KCl, K+, Mg2+, glycine and protein (b) Discuss the role of carbonic anhydrase in CO2 transport. (c) Discuss the cause of ‘cold denaturation’ of proteins.arrow_forwardWhat are lipid rafts? Describe the molecular components and interactions that occur in forming lipid rafts and explain how specific membrane proteins become concentrated in these rafts as opposed to diffusing freely throughout the membrane.arrow_forward
- Which of the following is/are incorrect about the differences between globular and membrane proteins? 1. Membrane proteins are embedded in a lipid environment while globular proteins are solvated by water. 2. The surface of membrane proteins are likely to feature amino acid residues with hydrophobic side chains. 3. Globular proteins, because of their environment, do not have amino acid residues with hydrophobic side chains. 4. No membrane protein has any portions that are exposed to water. O 2 and 3 O 1 O 3 O 4 O 3 and 4arrow_forwardThe transmembrane segments of most integral membrane proteins are made of alpha -helical secondary structures. What is the advantage of this conformation ? How do multiple alpha-helices arrange themselves to form the aqueous pore of an ion channel ?arrow_forwardHow are the ER and Golgi involved in membrane creation? (Think about lipid synthesis and distribution). What are the characteristics of Sphingolipid and cholesterol in the membrane? What does it do to the membrane? Explain raft formation.arrow_forward
- What is the structure of the translocation channel that allows transfer of proteins across the membrane bilayer? In particular, is the channel so narrow that proteins can pass through only in an unfolded state, or will it accommodate folded protein domains?arrow_forwardWhich portion of the phosphatidylinositol molecule contributes to (a) fluidity of the bilayer and (b) the surface polarity of the bilayer?arrow_forwardWhat typical structure[s] is/are found in integral membrane proteins – how do they span themembrane?arrow_forward
- Differentiate between channel protein and carrier protein?arrow_forwardWhat TWO factors keep integral trans-membrane proteins embedded firmly within the lipid bilayer?arrow_forwardWhat are the four classifications of membrane proteins? How is each positioned with respect to the bilayer?arrow_forward
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