試題詳解

4. Which of the following statements about membrane transport is CORRECT?
(A) Charged molecules can pass through the membrane spontaneously,
(B) Active transport absolutely requires ATP hydrolysis,
(C) Conformational changes are not required for active transporters,
(D) The directionality of transport is determined by the structure of channel proteins,
(E) Facilitated diffusion can be saturated by substrates.