Answered: Which form of transport through the…

Which form of transport through the plasma membrane requires the expendi- ture of energy by the cell? A. Facilitated diffusion B. Osmosis C. Active transport D. Diffusion

Body Structures & Functions Updated

13th Edition

ISBN:9780357191606

Author:Scott

Publisher:Scott

Chapter3: Cells

Section: Chapter Questions

Problem 2RQ

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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

Which form of transport through the plasma membrane requires the expendi-
ture of energy by the cell?
A. Facilitated diffusion
B. Osmosis
C. Active transport
D. Diffusion

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