Question

Which molecules in the body require nitrogen? Select ALL that apply.

amino acids

carbonic acid

fatty acids

nucleic acids

Answer 1

Amino acids and nucleic acids.

- Amino acids contain an amino group (—NH2) and therefore require nitrogen.
- Nucleic acids contain nitrogenous bases (adenine, guanine, cytosine, thymine, uracil) and thus require nitrogen.
- Carbonic acid (H2CO3) and fatty acids are made of C, H, O and do not contain nitrogen.