Q. The chemical structure of DNA is composed of
A) nitrogenous base, ribose sugar and phosphate group
B) deoxyribose sugar only
C) nitrogenous base, pentose sugar and phosphate group
D) nitrogenous base and deoxyribose sugar
Explanation
DNA is a polynucleotide chain. Each nucleotide is made up of three components nitrogenous bases, pentose sugar and phosphate group. In case of DNA, the pentose sugar is deoxyribose sugar.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.