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What is taxis?
What is chemotaxis?
Taxis is the movement of bacterium toward or away from a stimulus.
Chemotaxis is the movement toward or away from a chemical stimulant (like food, example of food being gluclose)
What is fimbriae?
Singular = fimbria
What is an example of fimbriae in disease?
Fimbriae are short hair like appendages used for attachment (biofilms). Not used in motility
And example of fimbriae in disease is Neisseria gonorrhoea (causes gonorrhea), which use their fimbriae to attach to and colonize mucous membranes (making it burn when you pee)
What is pili?
Singular = pilus
Pili are longer appendages also used for attachment and ARE used in motility (twitching motility)
- only 1 or 2 per cell
- retractable
- sexual recombination (sex/conjugation pilus)
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