NEET 2010
- Exam
- NEET
- Year
- 2010
- Subject
- Zoology
- Chapter
- Human Reproduction
NEET 2010 · Zoology · Human Reproduction
Which one of the following statements about human sperm is correct?
Which one of the following statements about human sperm is correct?
Options
- AAcrosome has a conical pointed structure used for piercing and penetrating the egg, resulting in fertilization
- BThe sperm lysins in the acrosome dissolve the egg envelope facilitating fertilization
- CAcrosome serves as a sensory structure leading the sperm towards the ovum
- DAcrosome serves no particular function
Correct answer
B. The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilization
Step-by-step solution
Penetration of human sperm is a chemical mechanism. In this, acrosome of sperm undergoes acrosomal reaction and releases certain sperm lysins, which dissolve the egg envelope locally and make the path for the penetration of sperm. Sperm lysins are acidic proteins. These sperm lysins contain a lytic enzyme hyaluronidase that dissolves the hyaluronic acid polymers in the intercellular spaces, which holds the granulosa cells of corona radiata together corona penetrating enzyme and acrosin.