Contact of a Sea Urchin Egg with Signal Molecules on Sperm

Question

Contact of a sea urchin egg with signal molecules on sperm causes the egg to undergo a brief
A) mitosis.
B) membrane depolarization.
C) apoptosis.
D) vitellogenesis.
E) acrosomal reaction.

Accepted Answer

Contact with signal molecules on sperm causes the egg to undergo membrane depolarization, which leads to the fusion of the egg and sperm cell membranes and subsequent fertilization.