A person got an infection, he became ill, but then he survived. What do you think of the immunity he would have developed?
Correct answer: D. Naturally induced active immunity
- A. Active immunity
- B. Artificially induced active immunity
- C. Passive immunity
- D. Naturally induced active immunity
Explanation
The correct answer is 'Naturally induced active immunity'. This type of immunity develops when a person is exposed to a pathogen through natural infection, prompting the immune system to produce antibodies and memory cells specific to that pathogen. This process leads to long-term immunity.Option A, 'Active immunity', is correct in describing the type of immunity, but it lacks specificity regarding how it was acquired.Option B, 'Artificially induced active immunity', involves immunity developed through vaccines, which is not applicable as the person was naturally exposed to the pathogen.Option C, 'Passive immunity', involves receiving antibodies from an external source, providing immediate but short-lived protection, unlike the body's own prolonged immune response.
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About Immunity
Specific defense mechanisms protect the body through antigen recognition by B and T lymphocytes. The topic covers clonal selection, antibody production, plasma and memory cells, cell-mediated responses, helper and cytotoxic T cells, and the difference between primary and secondary immune responses.
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139 free Immunity MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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