- 1(current)
Q. No.Which one of the following statements about human sperm is correct?
| 1. | The acrosome has a conical, pointed structure used for piercing and penetrating the egg, resulting in fertilization. |
| 2. | The sperm lysins in the acrosome dissolve the egg envelope, facilitating fertilization. |
| 3. | The acrosome serves as a sensory structure, leading the sperm towards the ovum. |
| 4. | The acrosome serves no particular function. |
Subtopic: Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 63%
Level 2: 60%+
AIPMT - 2010
Hints
Seminal plasma in humans is rich in:
| 1. | fructose, calcium and certain enzymes |
| 2. | fructose and calcium but has no enzymes |
| 3. | glucose and certain enzymes but has no calcium |
| 4. | fructose and certain enzymes but poor in calcium |
Subtopic: Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 94%
Level 1: 80%+
AIPMT - 2009
Hints
Links
The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is:
| 1. | spermatocyte-spermatogonia- spermatid-sperms |
| 2. | spermatogonia-spermatocyte-spermatid-sperms |
| 3. | spermatid-spermatocyte-spermatogonia-sperms |
| 4. | spermatogonia-spermatid-spermatocyte-sperms |
Subtopic: Â Seminiferous Tubules & Spermatogenesis |Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 91%
Level 1: 80%+
AIPMT - 2009
Hints
In humans, at the end of the first meiotic division, the male germs cells differentiate into the:
1. primary spermatocytes
2. secondary spermatocytes
3. spermatids
4. spermatogonia
Subtopic: Â Seminiferous Tubules & Spermatogenesis |Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 71%
Level 2: 60%+
AIPMT - 2008
Hints
- 1(current)
Q. No.
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