Nucleic Acids – Chemical Constitution of DNA and RNA, Biological Functions NEET Questions

Organic Chemistry - Biomolecules

Nucleic Acids – Chemical Constitution of DNA and RNA, Biological Functions MCQ Questions


1.
The sugar present in RNA is
A.
Glucose
B.
Deoxyribose
C.
Ribose
D.
Sucrose
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ANSWER :
C. Ribose
2.
Which of the following bases is present only in RNA?
A.
Adenine
B.
Thymine
C.
Uracil
D.
Cytosine
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ANSWER :
C. Uracil
3.
DNA is a polymer of
A.
Amino acids
B.
Sugars
C.
Nucleotides
D.
Fatty acids
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ANSWER :
C. Nucleotides
4.
In DNA, adenine pairs with
A.
Thymine
B.
Uracil
C.
Guanine
D.
Cytosine
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ANSWER :
A. Thymine
5.
Which of these is a purine base?
A.
Adenine
B.
Cytosine
C.
Uracil
D.
Thymine
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ANSWER :
A. Adenine
6.
Which nitrogenous base is absent in RNA?

NEET - 2017

A.
Guanine
B.
Thymine
C.
Adenine
D.
Cytosine
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ANSWER :
B. Thymine