Mathematics, 23.02.2021 03:10 kimutaitanui2228

Which of the following describes the way substances diffuse in and out of a cell? A. Substances move from lesser to greater concentration.

B. Substances move back and forth across the membrane equally.

C. Substances move across the membrane when energy is available.

D. Substances move from greater to lesser concentration.

Answer please it would help me alot and thx

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