Question

Which nucleotide is not found in rna?

a. adenine
b. guanine
c. thymine
d. uracil

Answer 1

The correct answer will be option-Thymine

Step-by-step explanation:

RNA or Ribonucleic acid is the nucleic acid which acts as genetic material in few viruses but as a catalyst in most organisms.

The RNA molecule is formed by the process of transcription from the DNA by complementary base-pairing. The nitrogenous bases on the RNA differ from the DNA one base that is thymine. RNA lacks thymine instead of which it posses uracil which binds to complementary adenine.

Thus, thymine is the correct answer.

Answer 2

Correct answer: C). Thymine

The thymine, which is present in the DNA is replaced by the uracil in the RNA. Uracil is one of the four nitrogenous bases which are found in the RNA. The nitrogenous bases present in the RNA are adenine, guanine, uracil, and cytosine. While the nitrogenous bases found in DNA are Adenine, guanine, thymine, and cytosine.

Hence, thymine is the nitrogenous bases which are not found in RNA.