Class 11 · Biomolecules

Hydrolases and Bond Hydrolysis — NEET Biology

✅ Asked in NEET 2024
✅ NEET 2024 PYQ

Match List I with List IIList 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 option:

QuestionNEET 2024

Match List I with List IIList 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 option:

Answer & NCERT explanation

Correct answer: C A–II, B–IV, C–I, D–III

Lipase breaks ester bonds in lipids (A-II), Nuclease breaks phosphodiester bonds in nucleic acids (B-IV), Protease breaks peptide bonds in proteins (C-I), and Amylase breaks glycosidic bonds in starch (D-III). This matches the substrate-bond specificity of each enzyme according to NCERT.

Read more NCERT concept on the PYQ

📖 NCERT Source

Hydrolases: Enzymes catalysing hydrolysis of ester, ether, peptide, glycosidic, C-C, C-halide or P-N bonds.

NCERT Biology · Class 11 · Chapter 9 · Paragraph 57
How NTA Uses This Concept

Hydrolases are enzymes that break down various types of chemical bonds by adding water molecules (hydrolysis). NTA tests this concept because hydrolases are crucial in digestion and cellular metabolism, breaking down biomolecules like proteins, carbohydrates, and fats. Students commonly mistake hydrolases for enzymes that form bonds instead of breaking them—remember they always ADD water to cleave bonds. The key is recognizing different hydrolases by the bonds they target: peptidases break peptide bonds, lipases break ester bonds in fats, amylases break glycosidic bonds in carbohydrates. Knowing these specifics helps you match enzyme types to their substrates and predict digestion pathways correctly.

❓ Frequently Asked Questions
What does NCERT say about Hydrolases Enzymes catalysing hydrolysis?
Hydrolases: Enzymes catalysing hydrolysis of ester, ether, peptide, glycosidic, C-C, C-halide or P-N bonds.
Has this concept appeared in NEET?
Yes — appeared in NEET 2024. Hydrolases catalyse hydrolysis of various bonds including mentioned types
Which chapter is this from?
Biomolecules, Class 11 NCERT Biology.

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