NEET 2024 · BiologyEnzymesPrevious Year Question
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:
Answer: (B) A-II, B-IV, C-I, D-III. Answer: (B) A-II, B-IV, C-I, D-III.
- A.A-III, B-II, C-I, D-IV
- B.A-II, B-IV, C-I, D-III✓
- C.A-IV, B-I, C-III, D-II
- D.A-IV, B-II, C-III, D-I
Correct Answer
(B) A-II, B-IV, C-I, D-III
Solution & Explanation
Answer: (B) A-II, B-IV, C-I, D-III. Solution: Each enzyme is matched to the bond it acts upon: lipase acts on ester bonds of lipids (A-II), nuclease on phosphodiester bonds of nucleic acids (B-IV), protease on peptide bonds of proteins (C-I), and amylase on glycosidic bonds of polysaccharides (D-III). NCERT classifies hydrolases as cleaving ester, peptide and glycosidic bonds, while nucleic acids are polynucleotides joined by phosphate-sugar linkages. NCERT Reference: Ch 9, p.117, line ~32 — "Hydrolases: Enzymes catalysing hydrolysis of ester, ether, peptide, glycosidic, C-C, C-halide or P-N bonds."
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