What are prokaryotes?
Single-celled organisms whose genetic material is not enclosed in a nucleus.
Pearson Edexcel International GCSE (9–1) Biology (Linear) — 4BI1 · 1.3
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What are prokaryotes?
Single-celled organisms whose genetic material is not enclosed in a nucleus.
How is the cytoplasm enclosed in a prokaryotic cell?
By a cell membrane and usually a cell wall.
Which four groups of organisms have cells with nuclei, unlike prokaryotes?
How are the cell wall, cell membrane, cytoplasm and ribosomes arranged in a bacterial cell?
The cell wall surrounds the cell membrane; cytoplasm and ribosomes are inside.
What is the function of a bacterial cell wall?
It supports and protects the cell.
What is the function of a bacterial cell membrane?
It controls the movement of substances into and out of the cell.
What happens in the cytoplasm of a bacterial cell?
Many chemical reactions occur there.
What is the function of ribosomes in a bacterial cell?
They make proteins.
What form does a bacterial cell's main genetic material take, and where is it found?
It is circular DNA in the cytoplasm, rather than inside a nucleus.
What are bacterial plasmids?
Smaller circles of DNA that may also be present in a bacterial cell.