Question

The end products of fermentation of glucose by yeast are
a. ethanol, CO2 and 36 ATP
b. CO2, H2O and 36 ATP
c. ethanol, CO2 and 2ATP
d. lactic acid, CO2 and 2 ATP.

Answer 1

Answer:

Fermentation is the process of breaking down sugar substances by chemical means involving microorganisms and releasing heat. The end products of fermentation are alcohol and carbon dioxide.

Explanation:

Some yeasts can ferment sugars to alcohol and carbon dioxide in the absence of air but require oxygen for growth. They produce ethyl alcohol and carbon dioxide from simple sugars such as glucose and fructose.

Answer 2

The end products of fermentation of glucose by yeast are- c. ethanol, CO2 and 2ATP.

• Fermentation is an anaerobic process in which partial breakdown of glucose occurs in the absence of oxygen. It is of two types- alcoholic fermentation and lactic acid fermentation.
• Yeast grows by alcoholic fermentation in which glucose is converted into alcohol such as ethanol. Carbon dioxide and two molecules of ATP are released by the breakdown of one molecule of glucose.
• Fermentation by yeast is used commercially in the preparation of bread and alcohol.