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slava [35]
3 years ago
9

How can substances be transported across a membrane against their concentration gradient?

Biology
1 answer:
mote1985 [20]3 years ago
3 0

Answer: To move substances against a concentration or electrochemical gradient, a cell must use energy.

Explanation:

This occurs because During active transport, substances move against the concentration gradient from an area of low concentration to an area of high concentration which is a  “active” progress which requires the use of energy (usually in the form of ATP). It is the opposite of passive transport.

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Keith_Richards [23]

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