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GCSE Combined Science · key term
The main DNA molecule carrying a cell's genetic information; in bacteria it is circular and lies in the cytoplasm.
Used by Edexcel
Paper 1, Paper 2
Revise: Cell Structures and Specialised CellsBacterial cells are prokaryotic: they have no nucleus, so their chromosomal DNA lies in the cytoplasm. Bacteria are generally much smaller than animal and plant cells, but they still carry out the processes needed for life.
Bacteria have DNA and ribosomes, but no nucleus. Their chromosomal DNA is not enclosed in a nuclear membrane.
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