An enzyme that sperm secretes that is important for egg penetration is
A) hyaluronidase
B) collagenase
C) peptidase
D) acetylcholinesterase

Question

Quizplus · Accepted Answer

Hyaluronidase is an enzyme that is secreted by sperm and helps them to penetrate the protective layers of the egg. This enzyme breaks down hyaluronic acid, which is one of the components of the cumulus cells that surround the egg. Once the sperm penetrates through the cumulus cells, it can then bind to the zona pellucida and undergo the acrosome reaction, which allows it to penetrate the egg itself. Other enzymes like collagenase and peptidase are not as important for this process. Acetylcholinesterase is an enzyme that breaks down acetylcholine, which is a neurotransmitter that is not involved in the process of fertilization.

An Enzyme That Sperm Secretes That Is Important for Egg