CUET · BIOLOGY · PYQ PAPER 2023

Arrange the steps involved in retroviral infection of an animal cell in a sequencial order :
(A) More virus particles are made.
(B) Virus eventually enters T-lymphocytes.
(C) Viral DNA incorporated in host DNA.
(D) RNA of HIV enters macrophages.
(E) By reverse transcription viral RNA forms viral DNA.
Choose the correct answer from the options given below:

A (D), (E), (C), (B), (A)
B (E), (D), (A), (C), (B)
C (D), (E), (C), (A), (B)
D (E), (D), (A), (B), (C)

Verified Solution

Answer & Solution

Correct Answer

(C) (D), (E), (C), (A), (B)

Step-by-step Solution

Detailed explanation

(D), (E), (C), (A), (B)

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 (Example)	List II (Name of Interaction)
A. Sea anemone and clown fish	I. Competition
B. Lichens	II. Commensalism
C. Lice and Human	III. Mutualism
D. Flamingoes and resident fishes in South American lakes	IV. Parasitism

Choose the correct answer from the options given below:

CUET 2023 Easy

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LIST I	LIST II
A. Salmonella typhi	I. Common Cold
B. Rhino virus	II. Typhoid
C. Streptococcus pneumoniae	III. Malaria
D. Plasmodium vivax	IV. Pneumonia

List - I	List - II
(A) \(Ni ^{2+}\)	(I) Pink
(B) \(Cu ^{2+}\)	(II) Purple
(C) \(Mn ^{2+}\)	(III) Green
(D) \(Ti ^{3+}\)	(IV) Blue