Question

Which two molecules have same linkage bonding in the monomers together?
• Nylon and maltose
• Nylon and protein
• Terylene and maltose
• Terylene and protein

• A. Nylon and maltose
• B. Nylon and protein
• C. Terylene and maltose
• D. Terylene and protein

Hint:

Remember the important polymer linkages:
• Nylon \(\rightarrow\) Amide linkage \((-CONH-)\)
• Protein \(\rightarrow\) Peptide linkage \((-CONH-)\)
• Terylene \(\rightarrow\) Ester linkage \((-COO-)\)
• Maltose \(\rightarrow\) Glycosidic linkage

Answer 1

The Correct Option is B

Concept: Polymers and biomolecules are formed when smaller units called monomers join together through specific linkages. Different linkages include:
• Peptide linkage
• Ester linkage
• Glycosidic linkage
• Amide linkage The nature of the linkage determines many physical and chemical properties of the compound.

Step 1: Understand the linkage present in nylon. Nylon is a synthetic polyamide polymer. In nylon, monomers are connected through: \[ \boxed{-CONH-} \] This linkage is called: \[ \boxed{\text{Amide linkage}} \] or peptide-type linkage. For example, Nylon-6,6 forms through reaction between:
• Hexamethylene diamine
• Adipic acid The repeating linkage formed is: \[ -CO-NH- \]

Step 2: Understand the linkage present in proteins. Proteins are biological polymers made from amino acids. Two amino acids combine through condensation reaction to form: \[ -CO-NH- \] This linkage is called: \[ \boxed{\text{Peptide bond}} \] A peptide bond is chemically an amide bond. Thus, proteins also contain: \[ \boxed{-CONH-} \] linkage.

Step 3: Compare nylon and protein. Nylon linkage: \[ -CO-NH- \] Protein linkage: \[ -CO-NH- \] Therefore, both contain the same type of linkage. Hence: \[ \boxed{\text{Nylon and protein}} \] have identical linkage bonding.

Step 4: Verify remaining options. (i) Maltose Maltose contains glycosidic linkage: \[ \mathrm{C-O-C} \] Thus, it differs from nylon. (ii) Terylene Terylene is a polyester. It contains ester linkage: \[ -COO- \] Thus, it differs from proteins and nylon. Therefore, all other options are incorrect. Final Conclusion: The two molecules having the same linkage bonding are: \[ \boxed{\text{Nylon and protein}} \] Hence, the correct answer is: \[ \boxed{(2)} \]