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Match List I with List II. List I: A. Lipase; B. Nuclease; C. Protease; D. Amylase. List II: I. Peptide bond; II. Ester bond; III. Glycosidic bond; IV. Phosphodiester bond. Choose the correct answer from the options given below:
Lipase = Ester bond (fats II); Nuclease = Phosphodiester bond (nucleic acids IV); Protease = Peptide bond (proteins I); Amylase = Glycosidic bond (carbohydrates III)! Match: A-II, B-IV, C-I, D-III!
- In proteins, amino acids are linked by peptide bonds formed by condensation between carboxyl and amino groups. - In polysaccharides, monosaccharides are linked by glycosidic bonds. - In lipids (triglycerides), fatty acids are esterified to glycerol by ester bonds. - In nucleic acids, nucleotides are linked along the backbone by 3'-5' phosphodiester bonds.
- Lipase hydrolyzes ester bonds (A -> II). - Nuclease hydrolyzes phosphodiester bonds (B -> IV). - Protease hydrolyzes peptide bonds (C -> I). - Amylase hydrolyzes glycosidic bonds (D -> III).
A-II, B-IV, C-I, D-III corresponds to Option (1).
Diagnose every choice: Know exactly why the right option works and why distractors fail.
Accurately pairs each class of digestive hydrolytic enzyme with the specific covalent bond it hydrolyzes.
Mismatches Lipase with phosphodiester bond.
Mismatches Lipase with phosphodiester and Nuclease with ester.
Mismatches Lipase with glycosidic bond.
Confusing single ester bonds in fats with phosphodiester bonds in nucleic acid backbones.
"In a polypeptide or a protein, amino acids are linked by a peptide bond... In a polysaccharide the individual monosaccharides are linked by a glycosidic bond... In a nucleic acid, nucleotides are linked by phosphodiester bonds. Lipids have ester bonds."
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