Answered: An alpha-helix transmembrane protein…

An alpha-helix transmembrane protein has 35 amino acid residues embedded in a lipid bilayer membrane. What is the thickness of the biological membrane? 70 Å 52.5 Å 126 Å 46.7 Å

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter3: Biological Macromolecules

Section: Chapter Questions

Problem 2VCQ: Figure 3.23 Which categories of amino acid would you expect to find on the surface of a soluble...

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Concept explainers

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.

Question

An alpha-helix transmembrane protein has 35 amino acid residues embedded in a lipid bilayer membrane. What is the thickness of the biological membrane?

70 Å

52.5 Å

126 Å

46.7 Å

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