Answer:
| Aerobic respiration | Anaerobic respiration |
|---|---|
| Takes place in the presence of oxygen. | Takes place in the absence of oxygen. |
| Glucose is completely oxidised to CO2 and water. | Glucose is partly broken down into lactic acid (in muscles) or ethanol and CO2 (in yeast). |
| More energy is released — about 38 ATP per glucose molecule. | Less energy is released — about 2 ATP per glucose molecule. |
| Takes place in the cytoplasm and mitochondria. | Takes place only in the cytoplasm. |
| Occurs in most plants and animals. | Occurs in yeast, bacteria and in muscle cells during heavy exercise. |