Which of these does require energy? - ProProfs Discuss
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Which of these does require energy?

A. Active Transport
B. Passive Transport
C. Osmosis
D. Gravity

This question is part of

Diffusion and Osmosis
Asked by Heath, Last updated: Jun 30, 2020

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2 Answers

John Adney

A. Active Transport
 

John Smith

John Smith

Answered Sep 11, 2016

Active Transport
Active transport is the movement of molecules from an area of lower concentration to an area of higher concentration. Because this defies the law of diffusion, it takes the proteins on the membrane energy to transport molecules across.
 

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