BRAINCAKEProkaryotae
Prokaryotes(bacteria) are unicellular organisms with no nucleus or membrane-bound organelles.
They make food by photosynthesis or take in food by extracellular digestion.
The genetic material is a loop of DNA which is free in the cytoplasm, folded and condensed by non-histone proteins('naked' DNA).
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Key terms in this lesson
- organelle
- A membrane-bound structure within a cell with a specific structure suited to a specific function.
- cytoskeleton
- A network of protein fibres in the cytoplasm that gives cells shape, allows movement and anchors organelles.
- plasmid
- A small, circular loop of DNA, separate from the main chromosome, found in the cytoplasm of prokaryotic cells.
- prokaryotic cell
- A cell with no nucleus or membrane-bound organelles, found in bacteria.
- eukaryotic cell
- A cell with a nucleus and membrane-bound organelles, found in animals, plants, fungi and protoctists.
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