Question

Three different ways in which glucose is oxidised

Answer 1

Breaking down of glucose involves two processes. In the first step, it is broken into three carbon molecules called pyruvate. The pyruvate is further broken down into energy in following different ways in various organisms.
1) Aerobic respiration : In this case pyruvate is broken down into water and carbon dioxide along with release of energy. It commonly occurs in mitochondria of cells.
2) Anaerobic respiration in yeast : In yeast cells during fermentation pyruvate is converted into ethanol and C02 in the absence of 02.
3) Anaeorbic respiration in muscles: Due to lack of oxygen, eg. during vigorous running or exercise, in human muscles, pyruvate is converted to lactic acid.
Hope it helps u

Answer 2

various organisms answer 1) Anaerobic respiration here the first step is break down the glucose into three carbon molecule called pyruvate
2) aroebic respiration - during aerobic respiration , first glucose is broken down into pyruvate and then the three carbon pyruvate molecule is broken down to give three molecules of carbon dioxide and water ...
first remember that Anaerobic is different than aerobic .
3) Anaerobic respiration in muscles ..