Which of the following answers best describes a feature of the plasma membrane of a sea urchin egg that is required for fertilization?
A) It is located outside of the fertilization membrane.
B) It releases calcium, which initiates the fast block to polyspermy.
C) It has receptor molecules that specifically bind to acrosomal proteins.
D) It is a mesh of proteins crossing through the cytosol of the egg.

Question

Quizplus · Accepted Answer

The plasma membrane of a sea urchin egg has specific receptor molecules that bind to proteins from the sperm's acrosome, which is crucial for the recognition and fusion process during fertilization. This interaction ensures that only sperm from the same species can fertilize the egg, preventing cross-species fertilization.

Which of the Following Answers Best Describes a Feature of the Plasma