Question

name the two ways in which glucose is oxidised to provide energy in various organisms

Answer 1

1. Anaerobic Respiration

This process takes place in absence of oxygen, e.g. in yeast during fermentation. In this case pyruvate is converted into ethanol and carbon dioxide.

2. Aerobic Respiration

In aerobic respiration, breakdown of pyruvate takes place in presence of oxygen to give rise 3 molecules of carbon dioxide and water. The release of energy in aerobic respiration is much more than anaerobic respiration.