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NEET 2014
Exam
NEET
Year
2014
Subject
Zoology
Chapter
Human Health and Diseases

NEET 2014 · Zoology · Human Health and Diseases

At which stage of HIV infection does one usually show symptoms of...

At which stage of HIV infection does one usually show symptoms of AIDS?

Options

  1. AWithin 15 days of sexual contact with an infected person.
  2. BWhen the infected retro virus enters host cells.
  3. CWhen HIV damages large number of helper T-Lymphocytes.
  4. DWhen the viral DNA is produced by reverse transcriptase.

Correct answer

C. When HIV damages large number of helper T-Lymphocytes.

Step-by-step solution

HIV selectively destroys helper T-lymphocytes. It, therefore, causes symptoms of immunodeficiency due to a critically low number of helper T-lymphocytes. The TH cells are attacked by HIV and stop the triggering of B-lymphocytes by the T-cells, and thereby the immunodeficiency will be observed in the absence of antibodies.

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