Answered: If a tiny hole is made in a cell…

If a tiny hole is made in a cell membrane, it usually closes over immediately. What feature of the cell membrane allows this to happen so quickly? Describe in terms of composition.

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter3: Cells And How They Work

Section: Chapter Questions

Problem 1SQ: The plasma membrane __________. a. surrounds the cytoplasm b. separates the nucleus from the...

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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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If a tiny hole is made in a cell membrane, it usually closes over immediately. What feature of the cell membrane allows this to happen so quickly? Describe in terms of composition.

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