Sample Questions — Immunity
Try 5 questions below from Immunity. Get all 60 in the MedicNEET app.
MCQ
What type of immunity is developed when antigens are introduced and the body produces antibodies?
✅ Correct Answer: D
Active immunity arises when a host responds to an antigen by producing antibodies.
MCQ
Q9. Assertion–Reason
Assertion (A): Allergic individuals show an exaggerated immune response to certain antigens.
Reason (R): Their body produces IgE which binds to mast cells and causes histamine release.
✅ Correct Answer: A
IgE–mast cell–histamine axis underlies allergic symptoms.
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MCQ
What chemical is released from mast cells during allergic reactions?
✅ Correct Answer: A
Histamine and serotonin are released causing allergy symptoms.
MCQ
Q5. Assertion (A): Cell-mediated immunity is responsible for graft rejection.
Reason (R): B-cells produce antibodies that destroy foreign graft tissues.
✅ Correct Answer: C
Graft rejection is carried out by T-cells, not B-cells.
MCQ
Why is IgE responsible for allergy and not IgG?
✅ Correct Answer: B
IgE mediates allergy via chemical release upon allergen exposure.
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