Polymer Linkages and Types

Steps:

• Identify polymer classes: Nylon is a polyamide with amide (-CONH-) linkages; Terylene is a polyester with ester (-COO-) linkages; proteins are polypeptides with peptide (amide) linkages.
• Compare linkages: Proteins share amide bonds with nylon, unlike Terylene's esters.
• Evaluate options: Check each statement against these definitions.
• Select matching statement: Option C aligns with shared amide linkages.

Why C is correct:

• Proteins consist of amino acids linked by peptide bonds, which are amide linkages (-CONH-), identical to those in nylon as defined by polyamide structure.

Why the others are wrong:

• A: Nylon is a polyamide, not a polyester like Terylene.
• B: Nylon uses diamine and dicarboxylic acid monomers; Terylene uses diol and dicarboxylic acid.
• D: Terylene's linkages are esters, but the statement vaguely implies "different" without clear reference, making it incorrect.

Final answer: C