Q. Which of the following is not present in a nucleotide?
A) Cytosine
B) Guanine
C) Adenine
D) Tyrosine
Explanation
(d)
A nucleotide contains a pentose sugar [deoxyribose (in DNA) or ribose (in RNA)], nitrogenous base [such as adenine or guanine or thymine (in DNA) or cytosine or uracil (in RNA)] and a phosphate molecule.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.