Question

Glucose fermentation by Yeast yields

• A. $H_{2}O+C{O}_2$
• B. $\text{Ethanol}+H_{2}O$
• C. $\text{Methanol}+C{O}_2$
• D. $\text{Ethanol}+C{O}_2$

Answer 1

The correct option is D $\text{Ethanol}+C{O}_2$

Definition of fermentation :
Fermentation or anaerobic respiration is an energy releasing process conducted in the absence of oxygen (anaerobic conditions). The usual raw materials for fermentation are sugars like glucose.

Steps in ethanol fermentation :
Organisms like yeast produce enzymes like pyruvate decarboxylase and alcohol dehydrogenase that convert glucose into ethanol and carbon dioxide. The steps in ethanol fermentation are as follows:

Utility of the products :
Carbon dioxide is used in bread making and ethanol is used for production of alcoholic drinks.

Final answer :
(A) $\text{Ethanol}+C{O}_2$