Prokaryotic Cells
- Created by: Katy **
- Created on: 27-09-14 15:01
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- Prokaryotic Cells
- before the nucleus
- bacteria
- Cytoplasm
- contains enzymes for all metabolic reactions
- Ribosomes
- free in cytoplasm
- protein synthesis
- Nucleoid
- region in cytoplasm that contain DNA
- no nuclear membrane
- DNA
- circular
- no proteins to form chromatin
- Plasmid
- small circles of DNA
- separate from main DNA loop
- used to exchange DNA between bacterial cells
- useful for genetic engineering
- small circles of DNA
- Plasma Membrane
- made of phospholipids & proteins
- Cell Wall
- made of murein
- gylcoprotein
- made of murein
- Capsule
- thick polysaccharide layer outside of wall
- protection against
- desiccation
- chemicals
- phagocytosis
- fuse together
- biofilm
- sticky
- e.g. Dental plaque
- biofilm
- Flagellum
- rigid rotating tail
- propulsion
- embedded into cell membrane
- driven by a H+ gradient across the membrane
- rigid rotating tail
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