Biology Immunity PMDC Conceptual Practice
PMDC Verified Question 15 of 99
Which immune cells recognize foreign antigens presented on MHC molecules and subsequently proliferate into clones of antibody-secreting plasma cells?
A
B cells
B
A cells
C
F cells
D
Cytotoxic T cells
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: B cells
Concept: B-cell differentiation and clonal selection.

Solution: Upon antigen binding and helper T-cell activation, specific B cells undergo clonal expansion and differentiate into antibody-producing plasma cells and long-lived memory B cells.

Why other options are incorrect:
  • Option B & Option C: "A cells" and "F cells" are pancreatic islet cells (glucagon and pancreatic polypeptide producers), not immune cells.

  • Option D: Cytotoxic T cells destroy infected cells directly and do not secrete antibodies.

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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