JUPEBBiologyCell Biology and Organisation

Active transport differs from diffusion in that active transport

Aoccurs only in plant cells.
Bdoes not involve the cell membrane.
Crequires energy from ATP and can move substances against a concentration gradient.CORRECT
Dmoves substances down a concentration gradient.
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Why the answer is C, and why the others tempt you.
Active transport uses carrier proteins powered by ATP to pump substances from low to high concentration, for example the uptake of mineral ions by root hairs and the sodium-potassium pump in neurones. Diffusion is passive and moves substances down the gradient.
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