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Biology · 2022 · 3 marks
CBSE 2022 · Region 3 · Set 3 · Q8
(a) Write the complete name of the diagnostic test for AIDS. Explain the principle it works on. (b) Name the type of genetic material present in AIDS…
(a)
Write the complete name of the diagnostic test for AIDS. Explain the principle it works on.
(b)
Name the type of genetic material present in AIDS causing pathogen.
Marking-scheme solution
(a) •Enzyme-Linked Immunosorbent Assay
It is based on the principle of antigen-antibody interaction / HIV infection can be detected by the presence of antigen or by detecting the antibody synthesised against the pathogen.
-Polymerase chain reaction
Early detection and amplification of genetic material of pathogen/virus.
(b)
RNA
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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.