The force driving simple diffusion is _____, while the energy source for active transport is _____. the concentration gradient; ATP phosphorylated protein carriers; ATP the concentration gradient; ADP transmembrane pumps; electron transport

The force driving simple diffusion is _, while the energy source for active transport is _. the concentration gradient; ATP phosphorylated protein carriers; ATP the concentration gradient; ADP transmembrane pumps; electron transport

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

Chapter4: Energy And Metabolism

Section: Chapter Questions

Problem 4FIO

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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 force driving simple diffusion is _____, while the energy source for active transport is _____.

the concentration gradient; ATP

phosphorylated protein carriers; ATP

the concentration gradient; ADP

transmembrane pumps; electron transport

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