It generally takes the enzymes from dozens of sperm for one sperm to gain access to the oocyte membrane.

Question

Quizplus · Accepted Answer

Sperm cells release enzymes to help dissolve the outer layer of cells surrounding the oocyte (corona radiata) as well as the zone pellucida, which is the protective layer around the oocyte. It takes enzymes from several sperm to break down these layers enough for one sperm to reach and fertilize the egg.

It Generally Takes the Enzymes from Dozens of Sperm for One