Question

What do amino acids, fatty acids, nucleotides, and sugars (monosaccharides) all have in common?

They are all monomers
They are all polymers
They all contain nitrogen
They are all acids

Answer 1

(D) They are all acids

Step-by-step explanation:

Amino acids are monomers, fatty acids are polymers and they do not contain nitrogen. All four are acidic in nature for different reasons:

• Amino acids due to acidic carboxyl group -COOH.
• Fatty acids due to end chain acidic carboxyl group -COOH.
• Nucleotides because they have phosphate groups (which are acidic in nature).
• Monosaccharides due to presence of aldehyde group -CHO (which can oxidise to -COOH).