During lactic acid fermentation,………………

Options

A. `O_(2)` is used, `CO_(2)` is liberated
B. Neither `O_(2)` is used for nor `CO_(2)` liberated
C. `O_(2)` is not used, `CO_(2)` is liberated
D. `O_(2)` is used, `CO_(2)` is not liberated

Answer

**Step-by-Step Solution:**

1. **Understanding Lactic Acid Fermentation**: Lactic acid fermentation is a type of anaerobic fermentation that occurs in the absence of oxygen. It primarily takes place in muscle cells during intense exercise when oxygen levels are low.

2. **Starting Material**: The process begins with glucose, which is broken down through glycolysis to form pyruvate.

3. **Conversion to Lactic Acid**: In the absence of oxygen, pyruvate is converted into lactic acid by the enzyme lactic acid dehydrogenase. This reaction does not require oxygen.

4. **Byproducts**: During lactic acid fermentation, no carbon dioxide is produced. This distinguishes it from alcoholic fermentation, where carbon dioxide is a byproduct.

5. **Conclusion**: Given the options provided, the correct statement regarding lactic acid fermentation is that neither oxygen is used nor carbon dioxide is liberated.

**Final Answer**: Neither oxygen is used nor carbon dioxide is liberated.

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