Which of the following statement(s) is (are) correct?
(i) Pyruvate can be converted into ethanol and carbon dioxide by yeast
(ii) Fermentation takes place in aerobic bacteria
(iii) Fermentation takes place in mitochondria
(iv) Fermentation is a form of anaerobic respiration

Options

A. (i) and (iii)
B. (ii) and (iv)
C. (i) and (iv)
D. (ii) and (iii)

Explanation

To determine which statements are correct regarding fermentation and related processes, let's analyze each statement step by step:

1. **Statement (i): Pyruvate can be converted into ethanol and carbon dioxide by yeast.**
- This statement is **correct**. Yeast performs alcoholic fermentation where pyruvate, derived from glucose, is converted into ethanol and carbon dioxide in the absence of oxygen.

2. **Statement (ii): Fermentation takes place in aerobic bacteria.**
- This statement is **incorrect**. Fermentation is an anaerobic process, meaning it occurs in the absence of oxygen. Aerobic bacteria utilize oxygen for respiration, not fermentation.

3. **Statement (iii): Fermentation takes place in mitochondria.**
- This statement is **incorrect**. Fermentation occurs in the cytoplasm of the cell, not in the mitochondria. Mitochondria are involved in aerobic respiration, which requires oxygen.

4. **Statement (iv): Fermentation is a form of anaerobic respiration.**
- This statement is **correct**. Fermentation is indeed a type of anaerobic respiration, as it occurs without oxygen and produces energy through the breakdown of glucose.

### Summary of Correct Statements:
- **Correct Statements**: (i) and (iv)
- **Incorrect Statements**: (ii) and (iii)

### Final Conclusion:
The correct statements are (i) and (iv).

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