Given the very complex lipid composition of cell membranes, what variations exist within the different membranes of organelles in an animal cell? What are the functional consequences of these differences?

Given the very complex lipid composition of cell membranes, what variations exist within the different membranes of organelles in an animal cell? What are the functional consequences of these differences?

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter4: Cell Structure

Section: Chapter Questions

Problem 36CTQ: In your opinion, is the nuclear membrane part of the endomembrane system? Why or why not? Defend...

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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.

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