Question

what are the different ways in which glucose is oxidised to provide energy in various organisms

Answer 1

In the preaence of oxygen in mitochondria it breaks into co2&water and gives 38molecules of atp.

In the absence of o2 in yeast gives ethanol and co2 and 2 molecules of atp (i think 2)

In the lack of oxygen in muscles it breaks to form lactic acid and energy.

In all the 3 cases the common step is that it first breaks to form pyruvate(3carbon molecule).

for this qn u should draw the flowchart given in the textbook

Answer 2

Glucose is oxidized in human beings and animals by aerobic respiration. It takes place in the presence of oxygen. In this process glucose is oxidised to form carbon dioxide , water and energy (38 ATP) .

Some organisms like bacteria and fungi respire in the absence of oxygen . In this process glucose is oxidised to form lactic acid , crbon dioxide and energy (2 ATP)




Hope it helps u...