MHT CET · BIOLOGY · STD 11 - 6. Biomolecules

Which one of the following nitrogen base is NOT a component of RNA?

A Guanine
B Cytosine
C Thymine
D Adenine

Verified Solution

Answer & Solution

Correct Answer

(C) Thymine

Step-by-step Solution

Detailed explanation

In RNA, uracil replaces thymine.

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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	Column I (Blood corpuscles)		Column II (stem cells)
i	Thrombocytes	a.	Lymphoid stem cells
Ii	Granulocytes	b.	Megakaryocytes
Iii	Erythrocytes	c.	Myeloid stem cells
Iv	Agranulocytes	d.	Reticulocytes