The microbe also known as 'brewer's yeast' is

Options

A. A rod shaped bacterium called Lactobacillus
B. An eukaryotic fungi called as S . Cerevisiae
C. A spherical bacterium called staphylococci
D. A spherical bacterium called streptococci

Answer

To solve the question "The microbe also known as 'brewer's yeast' is", we will analyze the options provided and determine which one accurately describes the microbe known as brewer's yeast.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the microbe commonly referred to as 'brewer's yeast'. This term is typically associated with a specific type of yeast used in brewing and baking.

2. **Analyzing the Options**:
- **Option A**: Rod-shaped bacterium called Lactobacillus.
- This is incorrect. Lactobacillus is a type of bacteria, not yeast.
- **Option B**: A eukaryotic organism fungi called Saccharomyces cerevisiae.
- This is correct. Saccharomyces cerevisiae is indeed a type of yeast and is commonly known as brewer's yeast.
- **Option C**: A spherical bacterium called Staphylococci.
- This is incorrect. Staphylococci are bacteria and not yeast.
- **Option D**: A spherical bacterium called Streptococci.
- This is also incorrect. Streptococci are bacteria, not yeast.

3. **Conclusion**: Based on the analysis of the options, the correct answer is **B. A eukaryotic organism fungi called Saccharomyces cerevisiae**. This organism is crucial in the brewing industry for alcohol production and is also used in baking.

### Final Answer:
The microbe also known as 'brewer's yeast' is **B. A eukaryotic organism fungi called Saccharomyces cerevisiae**.

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