2. Contact of a sperm with signal molecules in the coat of an egg causes the sperm to undergo _____.
(A) mitosis
(B) depolarization
(C) apoptosis
(D) vitellogenesis
(E) the acrosomal reaction
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統計: A(6), B(7), C(3), D(4), E(70) #944302
統計: A(6), B(7), C(3), D(4), E(70) #944302