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WBCS Preliminary Examination 2022 — General Studies · Question 147 of 200

Q147
General ScienceBiology
Fermentation ability of Yeast is due to
  1. a.Amylase
  2. b.Zymase
  3. c.Invertase
  4. d.Galactase

Answer: (B) Zymase

Zymase is the enzyme complex in yeast that catalyses the fermentation of sugars (glucose) into ethanol and carbon dioxide. It was first isolated by Eduard Buchner in 1897, a discovery that earned him the Nobel Prize in Chemistry. Amylase breaks down starch, while invertase hydrolyses sucrose.

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