Biology Immunity PMDC Conceptual Practice
PMDC Verified Question 34 of 99
An antigen is defined as any foreign molecule capable of binding specifically to immune receptors and inducing the formation of:
A
MHC complexes
B
Antibodies
C
Mucus
D
Histamines
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Antibodies
Concept: Definition of antigenicity and immunogenicity.

Solution: Antigens trigger adaptive humoral immunity, driving B-cell differentiation into plasma cells that synthesize target-specific antibodies.

Why other options are incorrect:
  • Option A: Major Histocompatibility Complex (MHC) molecules are host gene products present on host cell membranes to present antigens.

  • Option C: Mucus is an innate physical secretion.

  • Option D: Histamine is released by mast cells and basophils during inflammatory/allergic responses.

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.

Previous Question All Immunity MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App