In prokaryotes the ribosomes are associated with

Options

A. Cytosol
B. Cell wall
C. Plasma membrane
D. Nucleoid

Answer

To answer the question "In prokaryotes, the ribosomes are associated with," we will analyze each option provided and determine where ribosomes are typically found in prokaryotic cells.

### Step-by-Step Solution:

1. **Understanding Prokaryotes**:
- Prokaryotes are unicellular organisms that lack a true nucleus. Instead, they have a region called the nucleoid where their genetic material (DNA) is located.

**Hint**: Remember that prokaryotes do not have membrane-bound organelles like eukaryotes.

2. **Evaluating the Options**:
- **Cytosol**: This is the fluid component inside the cell where various cellular processes occur. Ribosomes can be found in the cytosol, but in prokaryotes, they are more specifically associated with other structures.
- **Cell Wall**: The cell wall provides structural support and protection to the cell. It does not play a role in ribosome function or association.
- **Plasma Membrane**: This is the outer boundary of the cell that controls the movement of substances in and out of the cell. In prokaryotes, ribosomes are often found associated with the plasma membrane, especially during protein synthesis.
- **Nucleoid**: The nucleoid contains the genetic material, but ribosomes are not associated with it. They are involved in protein synthesis, which occurs in the cytoplasm.

3. **Conclusion**:
- After evaluating the options, the correct answer is that in prokaryotes, ribosomes are associated with the **plasma membrane**. This is because ribosomes play a crucial role in synthesizing proteins that can be inserted into or secreted from the plasma membrane.

### Final Answer:
In prokaryotes, the ribosomes are associated with the **plasma membrane**.