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Biology · 2022 · 2 marks
CBSE 2022 · Region 4 · Set 1 · Q1
Explain, giving two reasons, how immune response by "vaccine" is different from that by "antitoxin" in humans.
Explain, giving two reasons, how immune response by "vaccine" is different from that by "antitoxin" in humans.
Marking-scheme solution
Immune response by vaccine & Immune response by antitoxin
Immune response is generated by antibodies produced in response to weakened antigen introduced in the body & Immune response is generated by preformed antibodies or antitoxin is injected
Response takes sometime & Quick immune response
Memory cells are generated / long lasting & One time response
Vaccine provides active immunity & Antitoxin provides passive immunity
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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.