Question

Match the following enzymes with their appropriate functions.

• A. A→(iv), B→(iii), C→(i), D→(ii)
• B. A→(ii), B→(i), C→(iv), D→(iii)
• C. A→(i), B→(ii), C→(iv), D→(iii)
• D. A→(iii), B→(i), C→(iv), D→(ii)

Answer 1

The correct option is D A→(iii), B→(i), C→(iv), D→(ii)

The granulosa cells of the corona radiata are held together by a matrix made of hyaluronic acid which is present in the intercellular spaces. The function of hyaluronidase is to degrade the hyaluronic acid and dissolve the matrix of the granulosa cells of the corona radiata.

Corona penetrating enzyme helps in the penetration of the corona radiata layer of the secondary oocyte.

Zona lysin, also known as acrosin, helps in penetrating the zona pellucida layer of the secondary oocyte.

These enzymes are present in the acrosome of the sperm.
Cortical enzymes initiate cortical reactions that help in the prevention of polyspermy. Cortical enzymes are found in the secretory vesicles located just under the plasma membrane of the oocyte.