Question

Q.10. Which of the following enzyme
helps sperm to penetrate zona
pellucida?​

Answer 1

Answer:

Spermatozoa must pervade the corona radiata and the zona pellucida before reaching the ovum proper; they do so by releasing hydrolytic enzymes from the acrosome - the corona-penetrating enzyme (hyaluronidase) and acrosin (a trypsin-like protease which digests the zona pellucida).

Answer 2

Explanation:

The most important enzyme is acrosin, a serine proteinase that is bound to the inner acrosomal membrane. When the sperm has made its way through the zona and into the perivitelline space (the space between the egg's plasma membrane and the zona pellucida), it can make direct contact with the plasma membrane of the egg