Prokaryotic cell contains a single chromosome.

Prokaryotic cells are a type of cells that lack a nucleus and other membrane-bound organelles. They are typically single-celled organisms, such as bacteria and archaea. Unlike eukaryotic cells, prokaryotic cells do not have a well-defined nucleus. Instead, their genetic material is located in a region of the cell called the nucleoid.

Structure of a prokaryotic chromosome:
The chromosome in a prokaryotic cell is a circular DNA molecule that is compacted and folded to fit inside the nucleoid region. The DNA molecule contains all the genetic information necessary for the cell's survival and reproduction. It carries the instructions for the synthesis of proteins and other molecules needed by the cell.

Functions of the prokaryotic chromosome:
The prokaryotic chromosome plays a vital role in the cell's functions:
1. Genetic information: The chromosome carries all the genes that are responsible for the cell's traits and characteristics.
2. Replication: The chromosome is replicated during the cell division process, ensuring that each daughter cell receives a copy of the genetic material.
3. Gene expression: The chromosome contains the regulatory sequences that control the expression of genes, allowing the cell to respond to its environment and carry out specific functions.
4. Transmission of genetic information: The chromosome is passed on to the next generation during cell division, ensuring the continuity of genetic information.

Comparison with eukaryotic cells:
In contrast to prokaryotic cells, eukaryotic cells have multiple linear chromosomes located within a membrane-bound nucleus. The chromosomes in eukaryotic cells are larger and more complex, containing not only protein-coding genes but also non-coding regions that regulate gene expression.

Conclusion:
In summary, a prokaryotic cell contains a single chromosome, which is a circular DNA molecule located in the nucleoid region. This chromosome carries all the genetic information necessary for the cell's functions and is responsible for the cell's traits and characteristics.

Single chromosome