試題詳解

39. The existence of water channel had been proposed since 1970 but was eventually identified till 1992 by Peter Agre. Which of the following sentences could support the existing of water channel on the membrane of a cell?
(A) The transport of water is ATP-independent.
(B) Red blood cells, but not the frog eggs, swell with water.
(C) Mercurials would inhibit water transport in red blood cells.
(D) There is a maximal rate (Vmax) for water transport of red blood cells.
(E) Water (H2O) crosses through the red blood cell membrane with almost no resistance, while acid hydronium ion (H3O+) does not permeate.