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The question is in the picture please help

The question is in the picture please help-example-1
User CornSmith
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Answer:

I don't know for sure but I think this might help

Step-by-step explanation:

Active transport: moving against a gradient

To move substances against a concentration or electron chemical 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.

User Alberto Morillo
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