Bacteria and yeast are sinilar in all the following features except that

Options

A. Both are unicellular
B. Both are prokaryotes
C. Both are capable of causing fermentation
D. Both produce spores.

Answer

To solve the question "Bacteria and yeast are similar in all the following features except that," we need to analyze the given options and identify the one that highlights a difference between bacteria and yeast.

### Step-by-Step Solution:

1. **Understand the Organisms:**
- Bacteria are classified as prokaryotes, which means they lack a true nucleus and membrane-bound organelles.
- Yeast, on the other hand, are eukaryotes, meaning they have a true nucleus and membrane-bound organelles.

2. **Examine the Options:**
- **Option 1: Both are unicellular.**
- Both bacteria and yeast are unicellular organisms. This is a similarity.
- **Option 2: Both are prokaryotes.**
- This statement is incorrect because bacteria are prokaryotes, but yeast are eukaryotes. This is a dissimilarity.
- **Option 3: Both are capable of causing fermentation.**
- Both bacteria (specifically lactic acid bacteria) and yeast can perform fermentation. This is a similarity.
- **Option 4: Both produce spores.**
- Both bacteria and yeast can produce spores under unfavorable conditions. This is also a similarity.

3. **Identify the Correct Answer:**
- The only option that indicates a difference between bacteria and yeast is **Option 2: Both are prokaryotes.** This is the correct answer as it highlights the dissimilarity between the two organisms.

### Final Answer:
The correct answer is **Option 2: Both are prokaryotes.**

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