Cellular Respiration

Question 1

Explain the process of anaerobic respiration

Answer 1

Oxygen not required. Undergoes process of glycolysis where 4 ATP and 2 Pyruvate molecules are produced.

Question 2

Explain the process of aerobic respiration

Answer 2

Oxygen required.

1. Glycolysis- 2 ATP, 2 Pyruvate molecules
2. Krebs Cycle- Acetyl-coA, 2 ATP, 4 CO2 as waste, H ions, electrons
3. Electron transport chain- 32 to 34 ATP, 12 water molecules

Question 3

Where does cellular respiration occur?

Answer 3

Mitochondria

Question 4

Purpose of cellular respiration

Answer 4

To break down sugar in the presence of oxygen to release energy in the form of ATP

Question 5

Explain respiration when energy is required quickly

Answer 5

Glycolysis is beneficial when there is not enough time for oxygen to be delivered to a muscle (sprinting)
The muscles undergo anaerobic respiration, producing lactate (later turned lactic acid).
Once over, oxygen is delivered and aerobic respiration recommences. An enzyme breaks down any accumulated lactic acid.