Which ones are involved in preparation of alcohol ?

Options

A. Yeast
B. Slime Moulds
C. Bacteria
D. Water Moulds

Answer

**Step-by-Step Solution:**

1. **Identify the Organisms Involved**: The question asks which organisms are involved in the preparation of alcohol. We need to consider the options provided: yeast, slime molds, bacteria, and water molds.

2. **Understanding Yeast**: Yeast is a type of fungus that plays a crucial role in the fermentation process, which is essential for alcohol production. The scientific name for the yeast commonly used in brewing is *Saccharomyces cerevisiae*.

3. **Role of Yeast in Alcohol Production**: Yeast ferments sugars to produce alcohol and carbon dioxide. This process is utilized in the brewing of beer and the production of wine.

4. **Examine Other Options**:
- **Slime Molds**: These are primarily decomposers and do not play a role in alcohol production.
- **Bacteria**: While some bacteria are involved in fermentation processes, they are not primarily responsible for alcohol production.
- **Water Molds**: These are also not involved in alcohol production.

5. **Conclusion**: The only organism from the provided options that is directly involved in the preparation of alcohol is yeast, specifically *Saccharomyces cerevisiae*.

**Final Answer**: Yeast (specifically *Saccharomyces cerevisiae*) is involved in the preparation of alcohol.

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