MHT CET · BIOLOGY · STD 12 - 10. Human Health and Diseases

Which one of the following is NOT correct regarding vaccines?

A It is used to control diseases like measles, polio etc.
B It is antigenic protection against particular pathogen.
C It teaches immune system to recognize and eliminate the pathogenic organism.
D It is introduction of antibodies into animal body.

Verified Solution

Answer & Solution

Correct Answer

(D) It is introduction of antibodies into animal body.

Step-by-step Solution

Detailed explanation

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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	Column I		Column II
i.	\(FADH _2\)	a.	Complex III
ii.	Ubiquinol	b.	Complex IV
iii.	\(NADH + H ^{+}\)	c.	Complex II
iv.	Cytochrome C	d.	Complex I