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| Aerobic Respiration | Anaerobic Respiration |
| 1. Aerobic respiration occurs in the presence of oxygen | 1. Anaerobic respiration occurs in the absence of oxygen |
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2. Complete oxidation of glucose takes place to form CO 2 and H 2 O |
2. Incomplete oxidation of glucose takes place to form alcohol / lactic acid and CO 2 |
| 3. It occurs in plant and animal cells | 3. It occurs in anaerobic bacteria and human muscle cells |
| 4. For each molecule of glucose, 38 molecules of ATP are generated | 4. For each molecule of glucose, only 2 molecules of ATP are generated |
