Could you help me with these

Directions: Either it's a carboyhdrate, lipid, protein, nucleic acid

It's monomers contain NH2 amd COOH groups

Controls cell reproduction and activities

Ratio of hydrogen to oxygen is 2:1

Is held together with peptide bonds

3 answers

#1 is amino acids.
#3 is H2O
those aren't the choices
which compound has h20?