Yeast produces an enzyme complex that is responsible for fermentation. The enzyme complex is

Options

A. Aldolase
B. Dehydrogenase
C. Invertase
D. Zymase

Answer

To solve the question regarding the enzyme complex produced by yeast that is responsible for fermentation, we will analyze each of the provided options step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the enzyme complex produced by yeast that is responsible for fermentation.

2. **Analyzing the Options**:
- **Option 1: Aldolase**:
- Aldolase is an enzyme that catalyzes the addition of an aldehyde group to a substrate.
- It is not specifically associated with fermentation in yeast.
- **Conclusion**: This option is incorrect.

- **Option 2: Dehydrogenase**:
- Dehydrogenases are enzymes that remove hydrogen from a substrate, often involved in oxidation-reduction reactions.
- While yeast does have dehydrogenase enzymes, they are not the primary enzyme complex responsible for fermentation.
- **Conclusion**: This option is incorrect.

- **Option 3: Invertase**:
- Invertase is an enzyme that catalyzes the hydrolysis of sucrose into glucose and fructose.
- Although yeast produces invertase, it is not the main enzyme complex responsible for fermentation.
- **Conclusion**: This option is incorrect.

- **Option 4: Zymase**:
- Zymase is a complex of enzymes produced by yeast that is directly involved in the fermentation process.
- It facilitates the conversion of sugars into alcohol and carbon dioxide during fermentation.
- **Conclusion**: This option is correct.

3. **Final Answer**: The enzyme complex produced by yeast that is responsible for fermentation is **zymase**.