Question

In which one of the following processes CO2 is not released?

• A. Aerobic respiration in animals
• B. Alcoholic fermentation
• C. Lactate fermentation
• D. Aerobic respiration in plants

Answer 1

The Correct Option is C

The question asks in which process carbon dioxide (CO₂) is not released. Let's evaluate each given option to determine the correct answer:

1. Aerobic respiration in animals: This process involves the complete oxidation of glucose to produce CO₂, water, and ATP. Therefore, CO₂ is released in this process.
2. Alcoholic fermentation: This anaerobic process results in the conversion of glucose into ethanol and carbon dioxide. Hence, CO₂ is released here.
3. Lactate fermentation: This anaerobic process occurs in some bacteria and animal muscle cells, where glucose is converted into lactic acid without the release of CO₂. Since no CO₂ is released during lactate fermentation, this is the correct answer.
4. Aerobic respiration in plants: Similar to animals, aerobic respiration in plants involves the release of carbon dioxide as glucose is oxidized to carbon dioxide, water, and ATP.

Based on the above analysis, the correct answer is Lactate fermentation, as it is the only process among the options where carbon dioxide is not released.