Question

Which statement about simple diffusion is correct? A: It does not require metabolic energy B: It occurs down an electrochemical gradient C. It is the only form of transport that is not carrer-mediated. D: It occurs only in waste removal process
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Answer 1

Answer:

A. It does not require metabolic energy

Explanation:

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Answer 2

B. it occurs down an electrochemical gradient.

Explanation:

because substance move against the membrane's electrochemical gradient, the cell utilize active transport, which requires energy from ATP.