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Biology · 2022 · 3 marks
CBSE 2022 · Region 5 · Set 1 · Q7
'An HIV patient normally doesn't die of 'AIDS', but death is caused due to many other infections.' Do you agree with the statement? Give explanatory…
'An HIV patient normally doesn't die of 'AIDS', but death is caused due to many other infections.' Do you agree with the statement ? Give explanatory reasons in support of your answer.
Marking-scheme solution
Yes
HIV attacks macrophages and helper T-lymphocytes (T-helper cells), leads to decrease in T-helper cells, patient becomes immuno-deficient / reduced immunity , becomes prone to infection by pathogens (Mycobacterium/viruses/fungi and even parasites like Toxoplasma).
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CBSE Class 12 Biology past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.