Class 11 · Biomolecules

Classification and Nomenclature of Enzymes — NEET Biology

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Thousands of enzymes have been discovered, isolated and studied. Most of these enzymes have been classified into different groups based on the type of reactions they catalyse. Enzymes are divided into 6 classes each with 4-13 subclasses and named accordingly by a four-digit number.

NCERT Biology · Class 11 · Chapter 9 · Paragraph 54
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Adjacent to a frequently-asked paragraph in the same chapter.

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QuestionPredicted for NEET 2027

A purified enzyme shows a hyperbolic V vs [S] curve with Vmax at saturation. The apoenzyme is inactive until haem is added; later, the same enzyme class is catalogued by a four-digit number. Which integrated statement is correct?

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