Chapter: Life Processes in Living Organisms Part 1· Science & Technology Part 2
Aerobic respiration needs oxygen and oxidises glucose completely; anaerobic respiration occurs without oxygen and oxidises it only partly.
| Aerobic respiration | Anaerobic respiration |
|---|---|
| Takes place in the presence of oxygen. | Takes place in the absence of oxygen. |
| Glucose is completely oxidised. | Glucose is incompletely oxidised. |
| End products: \(\mathrm{CO_2}\) and water. | End products: ethanol and \(\mathrm{CO_2}\) (yeast), or lactic acid (muscle cells). |
| Large amount of energy: 38 ATP per glucose. | Small amount of energy: 2 ATP per glucose. |
| Occurs in the cytoplasm and mitochondria. | Occurs only in the cytoplasm. |
| Example: most plants and animals. | Example: yeast, some bacteria, and muscle cells during heavy exercise. |