Question

multiple choice question
peptide bonds are used to join two of these together.
phospholipids
fatty acids
amino acids
monosaccharides

Explanation:

Peptide bonds form between amino - acids during protein synthesis. Phospholipids are part of cell membranes, fatty acids are in fats, and monosaccharides are simple sugars. None of these are joined by peptide bonds.

Answer:

C. Amino acids