Question:
A nucleoside consists of
A nucleoside consists of
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Nucleoside = Sugar + Base.
Nucleotide = Sugar + Base + Phosphate.
Adenosine is a nucleoside (Adenine + Ribose).
Nucleotide = Sugar + Base + Phosphate.
Adenosine is a nucleoside (Adenine + Ribose).
Updated On: Sep 1, 2026
- Sugar
- Phosphate
- Nitrogen base
- Sugar and nitrogen base
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of the structure of nucleosides and nucleotides.
Step 2: Detailed Explanation:
A nucleoside consists of a sugar (ribose or deoxyribose) and a nitrogenous base (purine or pyrimidine).
It does NOT contain a phosphate group.
A nucleotide consists of a sugar + nitrogen base + phosphate group.
Thus, a nucleoside is sugar + nitrogen base.
Option (D) is correct.
Step 3: Final Answer:
Thus, a nucleoside consists of sugar and nitrogen base, which corresponds to option (D).
[0.5cm]
This question tests knowledge of the structure of nucleosides and nucleotides.
Step 2: Detailed Explanation:
A nucleoside consists of a sugar (ribose or deoxyribose) and a nitrogenous base (purine or pyrimidine).
It does NOT contain a phosphate group.
A nucleotide consists of a sugar + nitrogen base + phosphate group.
Thus, a nucleoside is sugar + nitrogen base.
Option (D) is correct.
Step 3: Final Answer:
Thus, a nucleoside consists of sugar and nitrogen base, which corresponds to option (D).
[0.5cm]
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