Question

how does The breakdown of glucose take place in human cell under normal condition how does this process differ in muscle cells during sudden activity

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

Glucose is converted into a 3 carbon molecule called pyruvate which further breaks down in the presence ofoxygen to form carbon dioxide and water. ... (ii) In the absence of oxygenWhen breakdown of glucose is carried out in the absence of oxygen in a cell, it is called as anaerobic respiration.