Question

In an organism's DNA, what makes one nucleotide different from another?
A. The sugar
B. The phosphate
C. The base
D. Only some nucleotides have carbon atoms
E. Only some nucleotides have nitrogen atoms

Answer 1

Answer:

C. The base

Explanation:

The nitrogenous bases, Adenine, Guanine, Thymine and Cytosine in DNA are the variable elements in the nucleotides. Nucleotides are constituted by three elements: The sugar (deoxyribose) and the phosphate group constitutes the backbone of the double helix and are constant in all nucleotides. Also, all nucleotides have carbon and nitrogen atoms.