NEET 2012 · Class 12
Molecular Basis of Inheritance
[DIAGRAM: A five-membered furanose ring of ribose sugar with one oxygen atom in the ring, a CH2OH group, hydroxyl groups at the 2' and 3' carbons, and a blank substituent X at the 1' carbon.] The given diagrammatic representation shows one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component "X" in it.
- (A)Cholesterol — Guanine
- (B)Amino acid — NH2
- (C)Nucleotide — Adenine
- (D)Nucleoside — Uracil
The NCERT line that answers it
Verbatim lineA nitrogenous base is linked to the OH of 1' C pentose sugar through a N-glycosidic linkage to form a nucleoside, such as adenosine or deoxyadenosine, guanosine or deoxyguanosine, cytidine or deoxycytidine and uridine or deoxythymidine.
- Chapter
- Molecular Basis of Inheritance
- Section
- 5.1.1 Structure of Polynucleotide Chain
- Page
- 1
- Words matched
- 46 of 46
The answer appears as a continuous sentence in NCERT. This is that sentence.
How this line gives the answer
0, emb=1.0, combined=1.0). Verified: high — The span explicitly defines a nucleoside as a nitrogenous base linked to the 1' carbon of a pentose sugar, and lists uridine (which contains uracil) as an example, directly matching the MCQ's correct answer.
We did this for 1,565 questions.
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