Biology Acellular Life MDCAT 2014
PMDC Verified Question 70 of 70
Which of the following cells does HIV mainly infect?
A
B-plasma cells
B
T-killer lymphocytes
C
B-memory cells
D
T-helper lymphocytes
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: T-helper lymphocytes
Concept:

Viruses bind to specific host cell surface receptors to gain entry.

Solution:

  • HIV uses its gp120 spike protein to specifically target and bind to CD4 receptors.
  • These CD4 receptors are predominantly found on the surface of T-helper lymphocytes. By destroying these cells, HIV cripples the human immune system.


Why other options are incorrect:

  • T-killer, B-plasma, B-memory cells: These lack the dense concentration of CD4 receptors required for primary HIV entry.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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