Gas vacuole ,Single envelope system Cytoskeleton Non cellulosic wall Microfilaments , Cytoplasmic streaming Lack any cell organelles
How many of the above features are associated with procarytic cell ?

Options

A. One
B. Four
C. Two
D. Three

Answer

To determine how many of the listed features are associated with prokaryotic cells, we will analyze each feature one by one.

### Step-by-Step Solution:

1. **Gas Vacuole**:
- Prokaryotic cells, particularly certain bacteria, can have gas vacuoles. These structures help the bacteria maintain buoyancy in aquatic environments.
- **Conclusion**: Present in prokaryotic cells.

2. **Single Envelope System**:
- Prokaryotic cells have a single membrane (plasma membrane) surrounding them. They do not have a nuclear membrane or any other membrane-bound organelles.
- **Conclusion**: Present in prokaryotic cells.

3. **Cytoskeleton**:
- Prokaryotic cells do not have a well-defined cytoskeleton like eukaryotic cells. While they may have some protein structures that perform similar functions, they lack the complex cytoskeletal elements found in eukaryotes.
- **Conclusion**: Absent in prokaryotic cells.

4. **Non-Cellulosic Wall**:
- Prokaryotic cells have a cell wall, but it is primarily composed of peptidoglycan (in bacteria) or other materials, not cellulose. Thus, they do have a non-cellulosic wall.
- **Conclusion**: Present in prokaryotic cells.

5. **Microfilaments**:
- Microfilaments are part of the cytoskeleton found in eukaryotic cells. Prokaryotic cells do not have microfilaments.
- **Conclusion**: Absent in prokaryotic cells.

6. **Cytoplasmic Streaming**:
- Cytoplasmic streaming is a process observed in eukaryotic cells to facilitate the movement of cytoplasm and organelles. Prokaryotic cells do not exhibit this phenomenon in the same way.
- **Conclusion**: Absent in prokaryotic cells.

7. **Lack of Any Cell Organelles**:
- Prokaryotic cells lack membrane-bound organelles (like mitochondria, endoplasmic reticulum, etc.), which is a defining characteristic.
- **Conclusion**: Present in prokaryotic cells.

### Summary of Findings:
- **Features Present in Prokaryotic Cells**:
1. Gas Vacuole
2. Single Envelope System
3. Non-Cellulosic Wall
4. Lack of Any Cell Organelles

- **Features Absent in Prokaryotic Cells**:
1. Cytoskeleton
2. Microfilaments
3. Cytoplasmic Streaming

### Total Count:
Out of the seven features listed, **four features** are associated with prokaryotic cells.

### Final Answer:
**4 features are associated with prokaryotic cells.**

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