UNIT 2 MOTILITY ORGANELLES Flashcards
flagella occur in both ends
AMPHITRICHOUS
Moves by means of axial filament or axial fibril
SPIROCHETES
Long filamentous appendages
FLAGELLA
FLAGELLAR STAINS:
● Leifson Stain
● Gray Stain
● Fisher and Conn Stain
Polar
MONOTRICHOUS
is a small structure located at the base of cilia or flagella,
where microtubule proteins involved in movement originate
BASAL BODY OR KINETOSOMES
Sheathed Flagella: seen in
Vibrio
PERIPLASMIC FLAGELLA/ ENDOFLAGELLUM:
- Axial Fibril/ Filament
- SPIROCHETES
Cork-screw motility
SPIROCHETES
flagella occur all around
the bacterium
PERITRICHOUS
FIMBRIAE Gram (+) organisms:
○ Actinomyces
○ some Streptococci
○ Corynebacteria
flagella multiply in tops at
one end
LOPHOTRICHOUS
FLAGELLAR ARRANGEMENT
None
ATRICHOUS
types of PILI:
- Common/Somatic Pili/Fimbriae
- Sex Pili
similar to flagella except that it is wrapped around the cell
Axial Fibril/ Filament
are short projections (3 to 10 μm), usually numerous, that extend from the cell surface and are used for locomotion
CILLIA
longer projections (>150 μm) used for locomotion by cells
such as spermatozoa
FLAGELLA
E.g. Spirillum organism
AMPHITRICHOUS
FLAGELLA 3 parts:
■ Filament
■ Hook
■ Basal body
E.g. Cocci
ATRICHOUS
FIMBRIAE Gram (-) organisms:
○ Escherichia coli
○ Neisseria
gonorrhoeae
○ Neisseria
meningitidis
○ Pseudomonas
aeruginosa
E.g. Pseudomonas
fluorescence
LOPHOTRICHOUS
E.g. E. coli, Salmonella
typhi, Proteus
PERITRICHOUS
Non-flagellar, proteinaceous, hair-like appendages that adhere some bacterial cells to another cell
PILI
