The correct sequence of anaerobic reactions in yeast is

Options

A. Glucose `overset("Cytoplasm")to` Pyruvate `overset("Mitochondria")to` Ethanol + Carbon dioxide
B. Glucose`overset("Cytoplasm")to` Pyruvate `overset("Cytoplasm")to` Lactic acid
C. Glucose `overset("Cytoplasm")to` Pyruvate `overset("Mitochodria")to` Lactic acid
D. Glucose `overset("Cytoplasm")to` Pyruvate `overset("Cytoplasm")to` Ethanol + Carbon dioxide

Explanation

### Step-by-Step Solution:

1. **Understanding Anaerobic Respiration**:
- Anaerobic respiration occurs in the absence of oxygen. In yeast, this process is crucial for energy production when oxygen is not available.

2. **Starting Material**:
- The process begins with glucose, which is the primary substrate for fermentation in yeast.

3. **Glycolysis**:
- The first step in anaerobic respiration is glycolysis, where glucose is broken down into two molecules of pyruvate. This process occurs in the cytoplasm and produces a small amount of ATP (2 ATP molecules).

4. **Conversion of Pyruvate**:
- After glycolysis, the pyruvate molecules undergo further transformation. In yeast, pyruvate is converted into ethanol and carbon dioxide. This step is also carried out in the cytoplasm.

5. **End Products**:
- The end products of anaerobic respiration in yeast are ethanol (alcohol) and carbon dioxide, along with the production of 2 ATP molecules.

6. **Identifying the Correct Sequence**:
- The correct sequence of anaerobic reactions in yeast can be summarized as:
- Glucose → Pyruvate → Ethanol + Carbon Dioxide + 2 ATP.

7. **Choosing the Correct Option**:
- Based on the above steps, the correct option that represents this sequence is option D.