Question Detail

BIO 101 BIO 101 Past Questions Objective Question

Question

During fertilization, the sperm must penetrate a region of the egg called
Options
A zona gastrula
B zona blastula
C zona pellucida
Correct Answer
D None of the above
Correct Answer

Option C is the correct answer.

Detailed Explanation

The zona pellucida is a thick, transparent glycoprotein layer surrounding the plasma membrane of the mammalian egg. Sperm must bind to and penetrate this layer for fertilization to occur.

Hint

What is the name of the protective layer surrounding the egg that the sperm must get through?

Question Info