Lesson eLearning

During sperm capacitation in the female reproductive tract, which of the following changes occurs?

easy MCQ 1 mark Class 12 · Biology · Human Reproduction
  1. Increase in membrane fluidity
  2. Decrease in acrosomal enzyme activity
  3. Reduction in intracellular calcium levels
  4. Decrease in sperm motility
Answer
Increase in membrane fluidity

The correct answer is Increase in membrane fluidity — Thus, increased membrane fluidity facilitates penetration of the zona pellucida.

Step-by-step solution

  1. Identify the process of sperm capacitation.
  2. Recognize that capacitation increases sperm plasma membrane fluidity.
  3. Thus, increased membrane fluidity facilitates penetration of the zona pellucida.
Common mistake: Assuming acrosomal reaction increases instead of membrane fluidity

Concept tested: Sperm capacitation changes

Published · How this solution was prepared and checked

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