What does bacterium or plant cell contain?

A bacterium typically contains a single, circular chromosome of DNA, ribosomes for protein synthesis, and a cell membrane, often surrounded by a cell wall. In contrast, a plant cell contains a nucleus that houses its linear DNA, chloroplasts for photosynthesis, a cell wall made of cellulose, and large central vacuoles for storage and maintaining turgor pressure. Both types of cells have cytoplasm, where various metabolic processes occur.