NEET PG DENTAL EXAM

EMBRYOLOGY

CHROMOSOMES AND CELL DIVISIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is DNA composed of?
A
Sugars, salts, and hydrogen bonds
B
Phosphate, a pentose sugar, and a nitrogenous base
C
A nitrogenous base, hexose sugar, and polyphosphate
D
A phosphate sugar, Ribonucleic acid, and hydrogen
Explanation: 

Detailed explanation-1: -A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G) and thymine (T).

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