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BIO NMDCAT Sexually transmitted diseases
nmdcat.online July 16, 2026

A key survival strategy of Neisseria gonorrhoeae is its ability to frequently alter the antigenic structure of its surface proteins (pili). The biological significance of this antigenic variation is to:

A. Increase the rate of nutrient absorption
B. Evade the host's acquired immune response
✓
C. Facilitate movement through the bloodstream
D. Penetrate deep into muscle tissues

📝 Explanation

The correct option is Evade the host's acquired immune response. By constantly changing the amino acid sequence of its pili, the bacterium renders previously formed host antibodies useless, allowing it to evade immune clearance and cause repeat infections.

📖 Additional Information

  • Increase the rate of nutrient absorption
  • Evade the host's acquired immune response
  • Facilitate movement through the bloodstream
  • Penetrate deep into muscle tissues

The correct option is Evade the host's acquired immune response. By constantly changing the amino acid sequence of its pili, the bacterium renders previously formed host antibodies useless, allowing it to evade immune clearance and cause repeat infections.

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