Biology, asked by johanamontielramos, 3 months ago

When energy is required to move materials through a cell membrane

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Answered by aqsanajeebniazi

1

Answer:

During active transport, ATP is required to move a substance across a membrane, often with the help of protein carriers, and usually against its concentration gradient. One of the most common types of active transport involves proteins that serve as pumps.

Explanation:

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