A male has been tested, and his sperm seem to be normal. They are motile and seem to be surviving for the appropriate amount of time. However, the sperm don't seem to be able to fertilize an egg. What part of the sperm is most likely to be malfunctioning?

Question

Quizplus · Accepted Answer

The acrosome of the sperm contains enzymes that are needed to penetrate the outer layer of the egg during fertilization. If the acrosome is malfunctioning, the sperm may not be able to fertilize the egg even if the rest of the sperm is healthy.

A Male Has Been Tested, and His Sperm Seem to Be