Biology Immunity ETEA 2023 Retake
PMDC Verified Question 75 of 99
Cytotoxic T-cells
A
Directly kill invaders
B
Aid B-cells in their job
C
Both A and B
D
Suppress T-cells activity
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Directly kill invaders
Concept:

T-cells are divided into subsets with vastly different effector functions: Helpers, Cytotoxics, and Suppressors/Regulators.

Formula:

None

Solution:

  • Cytotoxic T-cells (CD8+ cells) are the foot soldiers of the cell-mediated response.


  • They seek out host cells infected with viruses or cancer cells. Upon recognizing the specific antigen, they release lethal proteins (perforin and granzymes) to directly kill the invader/infected cell.


Why other options are incorrect:

  • Aid B-cells: This is the specific job of Helper T-cells (CD4+).


  • Suppress activity: This is the job of Regulatory/Suppressor T-cells to prevent autoimmune reactions.

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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