CUET · BIOLOGY · PYQ PAPER 2023

Identify the statements which are not true for the genetic code.
(A) 64 codons code for amino acids.
(B) The genetic code is nearly universal with some exceptions found in mitochondrial codons and some protozoans.
(C) Some amino acids are coded by more than one codon.
(D) AUC codes for methionine
Choose the correct answer from the options given below:

A (A), (B) and (D) only
B (A) and (D) only
C (A), (B) and (C) only
D (C) and (D) only

Verified Solution

Answer & Solution

Correct Answer

(B) (A) and (D) only

Step-by-step Solution

Detailed explanation

(A) 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.

Same subject

Explore more questions on app

From CUET

Match List - I with List - II.

LIST - I	LIST - II
(A) \((\hat{i} \times \hat{j})+(\hat{j} \times \hat{i})\)	(I) 1
(B) \(\hat{i} \cdot \hat{i}+\hat{j} \cdot \hat{j}+\hat{k} \cdot \hat{k}\)	(II) \(\hat{k}-\hat{j}\)
(C) \(\hat{i} \times(\hat{i}+\hat{j}+\hat{k})\)	(III) \(\overrightarrow{0}\)
(D) \(\hat{i} \cdot(\hat{i}+\hat{j}+\hat{k})\)	(IV) 3

Choose the correct answer from the options given below :

CUET 2023 Easy

Explore more questions on app