Innate vs. adaptive immunity
Which is part of the adaptive immune system?
Answer A: explanation for every choice
A
Correct. B and T cells are specific for particular antigens and form memory.
B
Neutrophils are innate phagocytes.
C
Natural killer cells are innate lymphocytes that kill infected or abnormal cells without prior sensitization.
D
Complement is part of innate immunity.
TakeawayAdaptive: B and T cells, specific, with memory. Innate: neutrophils, macrophages, NK cells, complement.
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Reviewed 2026-11-05 by a medical student. Spot an error? Report it with question ID bb100.