Question

What are the different ways in which glucose is transported to provide energy in an organism?

Answer 1

Glucose is oxidised in two ways to provide energy.
(a) Aerobic respiration: Glucose is completely oxidised to carbon dioxide and water in the presence of oxygen, with the release of a considerable amount of energy. This type of oxidation occurs in most of the living organisms such as human beings, birds, snakes, frogs, fish, etc.
(b) Anaerobic respiration: This type of respiration occurs in the absence of oxygen. In this type of oxidation, glucose is partially oxidised to ethanol and carbon dioxide (yeast and other bacteria) or lactic acid (muscles during physical exercise and some bacteria) with the release of a small amount of energy.