Question

Which enzyme converts glucose and fructose both into ethanol?

• A. Invertase
• B. Zymase
• C. Maltase
• D. Diastase

Hint:

Remember: \textbf{Zymase = Fermentation}. It converts simple sugars like glucose and fructose into ethanol in anaerobic conditions.

Answer 1

The Correct Option is B

Zymase is a complex of enzymes found in yeast. It catalyzes the fermentation of glucose and fructose to ethanol and carbon dioxide. The overall reaction is: \[ \text{C}_6\text{H}_{12}\text{O}_6 \rightarrow 2\text{C}_2\text{H}_5\text{OH} + 2\text{CO}_2 \]

• (A) Invertase breaks sucrose into glucose and fructose — incorrect.
• (B) Zymase ferments glucose and fructose into ethanol — correct.
• (C) Maltase breaks down maltose into glucose — incorrect.
• (D) Diastase breaks starch into maltose — incorrect.