The organism used for alcohol fermentation, is

Options

A. Aspergillus
B. Saccharomyces
C. Pseudomonas
D. Penicillium

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks for the organism that is used for alcoholic fermentation. This process is crucial in the production of alcoholic beverages and involves the conversion of sugars into alcohol and carbon dioxide by microorganisms.

2. **Analyze the Options**:
- **Option A: Aspergillus** - This is a genus of fungi primarily used for the production of citric acid, not for alcoholic fermentation.
- **Option B: Saccharomyces** - This is a genus of yeast, specifically Saccharomyces cerevisiae, known as Brewer's yeast, which is widely used in the fermentation process to produce alcohol.
- **Option C: Pseudomonas** - This is a genus of bacteria that can be pathogenic and is not used for fermentation processes.
- **Option D: Penicillium** - This genus of fungi is known for producing antibiotics, particularly penicillin, and is not involved in alcoholic fermentation.

3. **Identify the Correct Answer**: Based on the analysis, the organism used for alcoholic fermentation is **Option B: Saccharomyces** (specifically Saccharomyces cerevisiae).

4. **Conclusion**: Therefore, the correct answer to the question is Saccharomyces cerevisiae, which is commonly used in brewing and baking for its ability to ferment sugars into alcohol.

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