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Makovka662 [10]
1 year ago
14

How are molecules transported across cell membrane against the concentration gradient?.

Biology
1 answer:
Masja [62]1 year ago
8 0

Answer: "To move substances against a concentration or electrochemical gradient, a cell must use energy. Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the right concentrations of ions and molecules in living cells."

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