The genetic material of a prokaryotic cell is known as

Options

A. Nucleus
B. centrosome
C. Nucleoid
D. Mesosome

Answer

To answer the question, "The genetic material of a prokaryotic cell is known as," we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks about the genetic material specifically in prokaryotic cells. Prokaryotic cells are organisms that do not have a defined nucleus.

2. **Evaluate the Options**:
- **Nucleus**: This is a membrane-bound organelle found in eukaryotic cells, not prokaryotic cells. Therefore, this option is incorrect.
- **Centrosome**: This organelle serves as a microtubule organizing center in eukaryotic cells and is not present in prokaryotes. Thus, this option is also incorrect.
- **Mesosomes**: These are invaginations of the plasma membrane in prokaryotes, but they are not the genetic material. They are hypothesized to assist in DNA replication and cell division. Hence, this option is incorrect.
- **Nucleoid**: This is the correct term for the genetic material in prokaryotic cells. The nucleoid is not membrane-bound and contains a single circular DNA molecule. It is located in the cytoplasm of the prokaryotic cell.

3. **Conclusion**: Based on the analysis of the options, the genetic material of a prokaryotic cell is known as the **nucleoid**.

### Final Answer:
The genetic material of a prokaryotic cell is known as **nucleoid**.