CUET · BIOLOGY · PYQ PAPER 2023

Select the steps of PCR technique from the following: DU Buddy
A. Primer synthesis
B. Primer annealing
C. DNA denaturation
D. Primer extension
E. DNA cleavage
Choose the correct answer from the options given below:

A A, B and C only
B A, C, D and E only
C B, C and D only
D A, B, D and E only

Verified Solution

Answer & Solution

Correct Answer

(C) B, C and D only

Step-by-step Solution

Detailed explanation

The steps of PCR technique are: DNA denaturation Primer annealing Primer extension Therefore, B, C and D only.

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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Match List - I with List - II.

List - I	List - II
(A) \(\left(y^{\prime \prime}\right)^3+\sin \left(y^{\prime}\right)=e^x\)	(I) 2
(B) \(\left(y^{\prime \prime}\right)^2+\left(y^{\prime}\right)^3=\sin x\)	(II) 1
(C) \(y^{\prime \prime \prime}+5 y^{\prime \prime}+6 y^{\prime}+3 y=\cos x\)	(III) Not defined
	(IV) 3

Choose the correct answer from the options given below :

CUET 2023 Easy

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List - I	List - II
(A) Lactobacillus casei	(I) Swiss cheese
(B) Clostridium butylicum	(II) Curd
(C) Propionibacterium sharmanii	(III) Acetic acid
(D) Acetobacter aceti	(IV) Butyric acid

Select the steps of PCR technique from the following: DU BuddyA. Primer synthesisB. Primer annealingC. DNA denaturationD. Primer extensionE. DNA cleavageChoose the correct answer from the options given below:

Step-by-step Solution

Select the steps of PCR technique from the following: DU Buddy
A. Primer synthesis
B. Primer annealing
C. DNA denaturation
D. Primer extension
E. DNA cleavage
Choose the correct answer from the options given below: