Lesson eLearning

Which of the following changes takes place during sperm capacitation in the female reproductive tract?

medium MCQ 2 marks Class 12 · Biology · Human Reproduction
  1. Loss of the acrosomal cap.
  2. Increase in intracellular calcium and removal of cholesterol from sperm plasma membrane.
  3. Activation of DNA repair enzymes in the sperm nucleus.
  4. Decrease in sperm motility due to decreased ATP.
Answer
Increase in intracellular calcium and removal of cholesterol from sperm plasma membrane.

The correct answer is Increase in intracellular calcium and removal of cholesterol from sperm plasma membrane. — Ignore options that mention loss of acrosomal cap, DNA repair, or decreased motility, which are not part of capacitation.

Step-by-step solution

  1. Recognise that capacitation involves modifications of the sperm plasma membrane and ion balance.
  2. Compare each option with the known changes: Option B describes increased calcium and cholesterol removal.
  3. Select Option B as the correct description of capacitation.
  4. Ignore options that mention loss of acrosomal cap, DNA repair, or decreased motility, which are not part of capacitation.
Common mistake: Confusing capacitation with the acrosome reaction

Concept tested: Sperm capacitation process

Published · How this solution was prepared and checked

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