Question

Which of these are components of DNA? Check all that apply.
deoxyribose sugar molecules
ribose sugar molecules
adenine
phosphate molecules
uracil
cytosine
thymine

Answer 1

all these are components of DNA

Answer 2

Answer:

All the options except ribose sugar molecules and uracil are present in the DNA.

Explanation:

Ribose sugar molecules and uracil are present in RNA molecules. Uracil is the base that pairs with adenine and takes the place of thymine in case of RNA molecules. The deoxyribose sugar and the phosphate molecules form the backbone of the DNA.

Adenine, guanine, cytosine and thiamine are the nitrogenous bases present in DNA whereas in case of RNA uracil substitutes thymine.