CUET · BIOLOGY · PYQ PAPER 2023

Match the Enzyme in List - I with its Activity in List - II.
List - I List - II
(A) Taq DNA Polymerase (I) Cleaves the DNA at ends
(B) Exonuclease (II) Breaks the fungal cell wall
(C) Protease (III) Stable above 90°C
(D) Chitinase (IV) Break the protein molecules

Choose the correct answer from the options given below :

A (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
B (A)-(III), (B)-(II), (C)-(IV), (D)-(I)
C (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
D (A)-(II), (B)-(I), (C)-(III), (D)-(IV)

Verified Solution

Answer & Solution

Correct Answer

(C) (A)-(III), (B)-(I), (C)-(IV), (D)-(II)

Step-by-step Solution

Detailed explanation

(A)-(III), (B)-(I), (C)-(IV), (D)-(II)

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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List I	List ll
(A) Maize	(I) Perisperm
(B) Black Pepper	(II) False fruit
(C) Ground Nut	(III) Albuminous seed
(D) Strawberry	(IV) Ex-albuminous seed

List - I	List - II
(A) Taq DNA Polymerase	(I) Cleaves the DNA at ends
(B) Exonuclease	(II) Breaks the fungal cell wall
(C) Protease	(III) Stable above 90°C
(D) Chitinase	(IV) Break the protein molecules