topace2125 topace2125
  • 03-03-2022
  • Biology
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How are molecules transported across cell membrane against the concentration gradient?.

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lilllianwert1234
lilllianwert1234 lilllianwert1234
  • 11-03-2022

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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