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Which of the following elements is not present in a nitrogenous base? A Hydrogen B Carbon C Phosphorus D Nitrogen

Which of the following elements is not present in a nitrogenous base?

A

Hydrogen

B

Carbon

C

Phosphorus

D

Nitrogen

 
 
 

Grade:12th pass

1 Answers

Rituraj Tiwari
askIITians Faculty 1792 Points
8 months ago
The nitrogen base present in nucleic acids has nitrogen, carbon, hydrogen and oxygen in the ring structure. Two types of nitrogen bases occur. They are-
1) Purines which have a double ring structure. They are adenine and guanine.
2) Pyrimidines, which have a single ring structure. They are thymine, cytosine and uracil.
Phosphorus forms a part of the nucleotides in thenucleic acid but it is not a part of the nitrogenous base.Thus the correct answer is option C.

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