Which of the following is a nucleotide found in DNA?

Question

a
ribose + phosphate group + thymine
b
deoxyribose + phosphate group + cytosine
c
deoxyribose + phosphate group + uracil
d
ribose + phosphate group + uracil

Answer 1

The correct answer is:

b. deoxyribose + phosphate group + cytosine

In DNA, the nucleotide structure is composed of deoxyribose sugar, a phosphate group, and one of the four nitrogenous bases: adenine, thymine, cytosine, or guanine. The other options either contain ribose (which is found in RNA) or include uracil (which is also found in RNA instead of thymine).