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's membrane to depolarize, which initiates the acrosomal reaction and eventual fusion of sperm and egg cells.