Which substances are the subunits of proteins?

amino acids
fibers
trans fats
calories

Amino acids

Explanation:

Proteins are large molecules made of amino acid, subunits composed an alfa carbon, an amino group, a carboxyl group, and a side chain, these amino acids are bonded by peptide bonds, covalent bonds formed between the carboxyl group of one amino acid and the amino group of the incoming amino acid.

I hope you find this information sueful and interesting! Good luck!

nope, but i have cleaned my brush in my cup of not as potentially harmful but nevertheless, very upsetting for scottish/british folks. especially if you've used the last teabag for it

explanation:

there could be something in that . . i am indeed an old scottish man!

there's a bit of bolshie-ness with it too though. i won't let go of the old ways . . tea and whisky . . whether the young whippersnappers like it or not!