During anaerobic respiration in unicellular fungus, which one of the following is not produced

Options

A. `C_2H_5OH`
B. `H_2O`
C. `CO_2`
D. ATP

Answer

To answer the question regarding what is not produced during anaerobic respiration in unicellular fungus, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Anaerobic Respiration**:
- Anaerobic respiration occurs in the absence of oxygen. In unicellular fungi, such as yeast, this process is utilized to generate energy.

2. **Identify the Products of Anaerobic Respiration**:
- During anaerobic respiration, glucose is incompletely broken down. The main products of this process in yeast are:
- Ethanol (C2H5OH)
- Carbon Dioxide (CO2)
- ATP (adenosine triphosphate)

3. **Analyze the Options Given**:
- Option 1: Ethanol (C2H5OH) - This is produced during anaerobic respiration.
- Option 2: Water - This is generally not produced during anaerobic respiration.
- Option 3: CO2 - This is produced during anaerobic respiration.
- Option 4: ATP - This is produced during anaerobic respiration.

4. **Determine Which Product is Not Produced**:
- From the analysis, we can see that water is not produced during anaerobic respiration in yeast. Instead, it is produced during aerobic respiration when glucose is completely broken down.

5. **Conclusion**:
- Therefore, the correct answer to the question is **Water** (Option 2).

### Final Answer:
**Water is not produced during anaerobic respiration in unicellular fungus.**

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