Answered: The plasma membranes of cells contain…

The plasma membranes of cells contain which of the following molecules? Choose the best answer. phospholipids, proteins, and cholesterol proteins only cholesterol and sugars phosphates and proteins

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter3: Cell Structure

Section: Chapter Questions

Problem 6SQ: Cell membranes consist mainly of ________ and ________. a. lipids; carbohydrates b. phospholipids;...

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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

The plasma membranes of cells contain which of the following molecules? Choose the best answer.

phospholipids, proteins, and cholesterol

proteins only

cholesterol and sugars

phosphates and proteins

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