Paper I — 2024 December (Supplementary) (2019 Scheme) — Qxvi
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Paper I
2024 December (Supplementary) (2019 Scheme) · 100 marks · 180 min
Question
A: T lymphocytes confer innate immunity.
R: Dendritic cells act as antigen presenting cells.
a) Both A and R are true, and R is the correct explanation of A
c) A is true but R is false
b) Both A and R are true, and R is not the correct explanation of A
d) A is false but R is true
Qxvi1 marksMCQs
Answer
- [x] d) A is false but R is true
Assertion is false: T lymphocytes are cells of the adaptive (specific) immune system, not innate immunity — they mediate antigen-specific cell-mediated immunity (helper and cytotoxic T-cell functions), requiring antigen-specific receptor rearrangement and clonal selection, hallmarks of adaptive rather than innate immunity.
Reason is true: dendritic cells genuinely do act as the most potent professional antigen-presenting cells, capturing and processing antigen for presentation to T cells, initiating adaptive immune responses.
Since the Assertion is false and the Reason is an independently true statement, the correct option is that A is false but R is true.
