Question

Sperms produce an enzymatic substance or lysine for dissolving egg coverings. It is called

• A. Hyaluronic acid
  
• B. Permease
• C. Hyaluronidase
• D. Androgamone

Answer 1

The correct option is C Hyaluronidase

Hyaluronic acid
Corona radiata is the outermost layer of ovum which is made up of elongated follicular cells arranged radially. The cells of corona radiata are held together by hyaluronic acid, a mucopolysaccharide.

Hyaluronidase
Hyaluronidase is one of the sperm lysins found in the acrosome of sperm. It dissolves the hyaluronic acid, the ground substance of the follicle cells, present in the corona radiata layer of the ovum. Thus, helping in the penetration of sperm.

Androgamone
Androgamones are sperm secretions, It is of two types as follows:

• Androgamone I - It suppresses the motility of sperm while conserving the sperm activity.
• Androgamone II - It dissolves the vitelline membrane allowing sperm entry into the ovum

Permease
Permeases are membrane transport proteins on the cell membrane which allows the entry of specific molecules into the cell.

Final answer
(B) Hyaluronidase