Biology Immunity KMU 2024
PMDC Verified Question 63 of 99
Which of the following is an example of passive immunity:
A
Antibodies from mother's milk
B
Previous chickenpox infection
C
Inactivated polio vaccine
D
Live polio vaccine
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Antibodies from mother's milk
Concept:

Passive immunity involves the reception of pre-formed antibodies without any metabolic effort from the recipient's own immune system.

Formula:

None

Solution:

  • A nursing mother secretes high concentrations of IgA antibodies into her colostrum and breast milk.


  • When the infant consumes this milk, they gain immediate immunological protection against pathogens in the environment.


  • Because the infant did not produce these antibodies themselves, this is classic, naturally acquired passive immunity.


Why other options are incorrect:

  • Infection / Vaccines: All of these force the recipient's immune system to actively generate its own antibodies and memory cells, which defines active immunity.

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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