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Passive transport:A. requires ATPB. appears to stop when equilibrium is reached.C. contains molecules which move up the concentration gradient.D. requires protein channels.
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Passive transport:A. requires ATPB. appears to stop when equilibrium is reached.C. contains molecules which move up the concentration gradient.D. requires protein channels.

User Kiarash Alinasab
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The answer would be C. contains molecules that move up the concentration gradient.

Passive transport refers to a type of cellular transport in which the substances (ions and molecules) move down to their respective gradient.

User LSE
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