Which process moves substances from low to high concentration using energy?
Answer and explanation
Correct answer: D. Active transport
Active transport uses ATP and carrier proteins to move substances against a concentration gradient.
Answer: Active transport.
Why not the others: Diffusion: it moves substances down a gradient. Osmosis: it is the movement of water down a water potential gradient. Facilitated diffusion: it moves substances down a gradient.
Answer: Active transport.
Why not the others: Diffusion: it moves substances down a gradient. Osmosis: it is the movement of water down a water potential gradient. Facilitated diffusion: it moves substances down a gradient.
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