Which of the following options contains the end products formed during anaerobic respiration in yeast?

Options

A. `H_(2)O, CO_(2)` and energy
B. `H_(2)S, C_(6)H_(12)O_(6)` and energy
C. `CO_(2),C_(2)H_(5)OH` and energy
D. `H_(2)O` and `CO_(2)`

Explanation

To determine the end products formed during anaerobic respiration in yeast, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Anaerobic Respiration**:
- Anaerobic respiration occurs in the absence of oxygen. In yeast, this process primarily converts glucose into other compounds without using oxygen.

2. **Identify the Starting Material**:
- The main substrate for anaerobic respiration in yeast is glucose (C6H12O6).

3. **Glycolysis Process**:
- The first step in both aerobic and anaerobic respiration is glycolysis, where glucose is broken down into pyruvate.

4. **Conversion of Pyruvate**:
- In the absence of oxygen, pyruvate does not enter the Krebs cycle. Instead, it is converted into acetaldehyde and then into ethanol (C2H5OH) through a process called fermentation.

5. **End Products of Anaerobic Respiration**:
- The final products of anaerobic respiration in yeast are ethanol (C2H5OH), carbon dioxide (CO2), and energy (in the form of ATP).

6. **Evaluate the Options**:
- Now, we can evaluate the provided options:
- **H2O, CO2, and energy**: Incorrect.
- **H2S, C6H12O6, and energy**: Incorrect.
- **CO2, C2H5OH, and energy**: Correct.
- **H2O and CO2**: Incorrect.

7. **Conclusion**:
- The correct answer is the option that includes CO2, C2H5OH, and energy.

### Final Answer:
- The correct option is **CO2, C2H5OH, and energy**.