CBSE 2022 · Region 2 · Set 3 · Q8 · 3 marks
(a)Development of recombinant DNA technology has made the expression of protective protein antigens (to be used as 'vaccines') in heterologous systems/bacteria or any other organism. Give an example of a vaccine developed by such a technology and the host used.(b)Explain how a humoral immunity system gets into action when a foreign antigen enters into a human body.
(a)
Development of recombinant DNA technology has made the expression of protective protein antigens (to be used as 'vaccines') in heterologous systems/bacteria or any other organism. Give an example of a vaccine developed by such a technology and the host used.
(b)
Explain how a humoral immunity system gets into action when a foreign antigen enters into a human body.
Marking-scheme solution
(a) • Vaccine - Hepatitis B
Host - Yeast
(b) (B Lymphocytes) produce an army of proteins / antibodies in blood to fight against foreign antigen.
Biotechnology and its ApplicationsBiotechnological Applications in MedicineUnderstandshort_answermedium
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CBSE Class 12 Biology past-paper question from the 2022board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.