CUET · BIOLOGY · PYQ PAPER 2023

Which one of the following regions is not present in transcriptional unit of DNA

A A Promoter
B The Structural gene
C Initiation factor
D A Terminator

Verified Solution

Answer & Solution

Correct Answer

(C) Initiation factor

Step-by-step Solution

Detailed explanation

Initiation factor

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.

Same subject

Match List-I with List-II

List-I (Strategies of an organism)	List-II (Example)
(A) Organisms breed only once in their lifetime	(I) Desert lizard
(B) Organisms breed many times during their lifetime	(II) Oysters
(C) Organisms produce large number of small sized offspring	(III) Salmon fish and bamboo
(D) Some organisms show behavioral responses with variation in their environment	(IV) Birds and mammals

Choose the correct answer from the options given below:

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