Question

monomers of carbohydrates are called ____, and monomers of proteins are called ____.
a monosaccharides, amino acids
b nucleic acids, fatty acids
c amino acids, monosaccharides
d nucleic acids, amino acids

Explanation:

To solve this, we recall the monomers of carbohydrates and proteins. Carbohydrates are made of monosaccharides (simple sugars) as monomers. Proteins are polymers of amino acids (each amino acid is a monomer that links to form proteins). Let's analyze each option:

• Option A: Monosaccharides (carbohydrate monomers) and amino acids (protein monomers) – this matches.
• Option B: Nucleic acids are monomers of nucleic acids (like DNA/RNA), fatty acids are part of lipids – incorrect.
• Option C: Amino acids are protein monomers, monosaccharides are carbohydrate monomers – but the order is reversed here – incorrect.
• Option D: Nucleic acids are not carbohydrate monomers – incorrect.

Answer:

A. Monosaccharides, amino acids