Comparing polymer linkages

Steps:

• Identify Nylon as a polyamide with amide (-CONH-) linkages from condensation of diamines and dicarboxylic acids.
• Identify proteins as polypeptides with peptide bonds, which are amide linkages from amino acid condensation.
• Compare linkages: both Nylon and proteins share amide bonds.
• Evaluate other options for accuracy in monomers and linkage types.

Why C is correct:

• Proteins and Nylon both form via condensation polymerization producing amide linkages, as defined by the -CONH- functional group in polyamides and peptide bonds.

Why the others are wrong:

• A: Nylon is a polyamide, not a polyester like Terylene.
• B: Proteins use amino acid monomers; Nylon uses diamine and dicarboxylic acid monomers.
• D: Both Terylene and fats contain ester (-COO-) linkages, not different ones.

Final answer: C