Question

27. Mention two ways in which food gets oxidised in organisms.​

Answer 1

Answer:

Aerobic respiration : In this case pyruvate is broken down into water and carbon dioxide along with release of energy. ...

Anaerobic respiration in yeast : In yeast cells during fermentation pyruvate is converted into ethanol and C02 in the absence of 02

Explanation:

Answer 2

Explanation:

Two ways in which glucose is oxidized to obtain or produce energy are as follows-

1) Anaerobic respiration: This process involves the breakdown of glucose into a three-carbon molecule called pyruvate in the absence of oxygen and takes place in the cytoplasm.

This pyruvate so produced can be converted into ethanol and carbon dioxide.

This process commonly takes place in yeast.

2) Aerobic respiration: During aerobic respiration (in the presence of oxygen), glucose is broken down into pyruvate and then this pyruvate molecule is broken down to give rise to three molecules of carbon dioxide and water.