問題詳情
12. Lipid-soluble signaling molecules, such as aldosterone, cross the membranes of allcells but affect only target cells because
(A) only target cells retain the appropriate DNA segments.
(B) intracellular receptors are present only in target cells.
(C) only target cells have enzymes that break down aldosterone.
(D) only in target cells is aldosterone able to initiate the phosphorylation cascade thatturns genes on.
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增