Question

The image shows the flow diagram for the breakdown of glucose in yeast.Under which condition these types of products are obtained?* Glucose Pyruvate + Energy In yeast Ethanol + CO2 + Energy (a) in the presence of oxygen O (b) in the absence of oxygen O (c) the presence of carbon dioxide (d) in the absence of carbon dioxide​

Answer 1

Answer:

in the absense of oxygen

Answer 2

The glucose is converted to pyruvate and energy and further to ethanol, carbon dioxide, and energy in the absence of oxygen. (OPTION B)

Explanation

FERMENTATION -  

• The biological process of conversion of a sugar molecule to alcohol in the anaerobic conditions in the yeast.
• The process takes place in the mitochondria of the cell facilitated by the various biological enzymes.
• Energy is released by the breakdown of the carbohydrate molecule.
• The oxidation of glucose is not complete and therefore, the energy released is of small quantity.
• The steps involved in the process are glycolysis and NAD+ degeneration with the release of only 2 ATP molecules.
• The ethanol produced in the reaction as a byproduct is used in alcoholic drinks and beverages.