試題詳解

6. What distinguishes channels from pumps in the context of membrane transport in plant cells?
(A) Channels facilitate passive transport and move substances against their concentration gradient, while pumps are involved in active transport and move substances from higher to lower concentration areas.
(B)Channels are involved in active transport and move substances from areas of lower to higher concentra facilitate passive transport and move substances from regions of higher to lower concentration.
(C) Channels and pumps perform identical functions, and the terms can be used interchangeably in membrane transport.
(D) Channels are passive transport proteins that allow substances to move down their concentration gradient, while pumps are active transport proteins that move substances against their concentration gradient.