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


13.
Which sugar is found in DNA?
A.
Glucose
B.
Fructose
C.
Ribose
D.
Deoxyribose
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ANSWER :
D. Deoxyribose
14.
The pyrimidines in DNA are
A.
Adenine and Guanine
B.
Cytosine and Thymine
C.
Guanine and Cytosine
D.
Adenine and Uracil
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ANSWER :
B. Cytosine and Thymine
15.
Which of these is NOT found in DNA?
A.
Adenine
B.
Guanine
C.
Uracil
D.
Thymine
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ANSWER :
C. Uracil
16.
A nucleotide does NOT contain
A.
A phosphate group
B.
A sugar
C.
An amino acid
D.
A nitrogenous base
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ANSWER :
C. An amino acid
17.
Phosphodiester bonds in DNA are between
A.
Base and base
B.
Phosphate and base
C.
Phosphate and sugar
D.
Base and sugar
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ANSWER :
C. Phosphate and sugar
18.
Who discovered the double helix structure of DNA?
A.
Watson and Crick
B.
Darwin
C.
Mendel
D.
Franklin
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ANSWER :
A. Watson and Crick