Respuesta :
Amino acids are best associated with proteins. Thus the correct answer is option (D).
The chemical molecule known as an amino acid is one that has both a carboxylic acid (-COOH) and an amino (-NH2) functional group.
The carbohydrate molecule known as starch, on the other hand, is composed of monomers known as monosaccharides. A lengthy chain of carbon, hydrogen, and oxygen atoms makes up the monosaccharide.
This suggests that the main structural distinction between starch and amino acids is that the former contains nitrogen, whereas the latter does not.
The complete question is:
Which one of the following is best associated with proteins?
a. phosphate linkages
b. hydrocarbon rings
c. hydrocarbon chains
d. amino acids
e. saccharides
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