Bacterial structure: essential features
Bacteria have several essential features. These features are found in nearly all bacteria.
- Cell wall (often made from peptidoglycan)
- Cell membrane
- Cytoplasm and Cytoskeleton
- Nuclear body (nucleoid)
The nuclear body consists of a single circular chromosome, which is not enclosed in a membrane.
The chromosome typically consists of about 4000 genes. This is larger than a viral genome, but smaller than the genome of a eukaryotic cell.