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Nucleotides are formed by

a)

Purine, sugar and phosphate

b)

Purine, pyrimidine and phosphate

c)

Purine or pyrimidine, sugar and phosphate

d)

Pyrimidine, sugar and phosphate



Question ID - 1236 | SaraNextGen Top Answer

Nucleotides are formed by

a)

Purine, sugar and phosphate

b)

Purine, pyrimidine and phosphate

c)

Purine or pyrimidine, sugar and phosphate

d)

Pyrimidine, sugar and phosphate

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

The nucleotide is formed by the union of a phosphate group with a nucleoside. A nucleoside contains a sugar molecule along with an organic nitrogenous base. Thus, a nucleotide contains a organic nitrogenous base (purine or pyrimidine) along with a sugar molecule and a phosphate group,

Nucleoside=Sugar molecule+Organic nitrogenous base.

Nucleotide=Nucleoside+Phosphate group.

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