Question

Describe various paths of glucose break down in organism

Answer 1

⑴ In presence of oxygen :

- Breaking down of glucose into pyruvate takes place in Mitochondria of a cell.

- End products are CO₂ , H₂O and energy.

⑵ In insufficient presence of oxygen :

- In muscle cells, due to insufficient presence of oxygen the cells undergoes anaerobic respiration.

- End products are Lactic acid and lot amount of energy.

⑶ In absence of Oxygen :

- In absence of Oxygen, glucose breakdown into pyruvate in cytoplasm only.

- End product are Ethanol, and small amount of energy.

Answer 2

in yeast (ii) in muscle cell (iii) in mitochondria