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 can follow these steps:

### Step 1: Identify the options given
The options provided are:
1. Road-shaped bacterium called Lactobacillus
2. Eukaryotic fungi called Saccharomyces cerevisiae
3. Spherical bacterium called Staphylococci
4. Bacterium called Streptococci

### Step 2: Understand what 'brewer's yeast' refers to
Brewer's yeast is a type of yeast that is primarily used in the brewing of beer and the baking of bread. It is important to note that yeast is classified as a fungus.

### Step 3: Analyze the options
- **Lactobacillus**: This is a genus of bacteria, not yeast.
- **Saccharomyces cerevisiae**: This is a species of yeast and is indeed known as brewer's yeast.
- **Staphylococci**: This refers to a genus of spherical bacteria, not yeast.
- **Streptococci**: This also refers to a genus of bacteria, not yeast.

### Step 4: Select the correct answer
Based on the analysis, the correct answer is **eukaryotic fungi called Saccharomyces cerevisiae**.

### Conclusion
The microbe also known as 'brewer's yeast' is **Saccharomyces cerevisiae**.

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