cell surface structure Flashcards
(13 cards)
Sticky or slimy materials on the cell’s surface that consist of either polysaccharides or protein
Cell surface structures
sticky coat of polysacc formed outside of envelope
- tightly attached
-visible with india ink
Capsule
loosely attached
Difficult to see
Leuconostoc
Slime layer
Fimbriae is short but more numerous than flagella, true or false?
True
Filamentous structures made of protein and enable bacterial cells to
- stick to surface
- Form pellicles
- form biofilm on solid surfaces
Pili
Function of conjugative pili
Facilitate genetic exchange by cell-cell
Nanowires
Can conduct electron toward or away from the cell
Facilitate adhesion
- support TWITCHING MOTILITY
Type IV PILI
Locomotion: movement in aqueous environment
- rotates like a propeller
Flagella
composed of flagellin(highly antigenic)
Filament
Composed of hook protein
Hook
Embedded in cm for anchorage
Basal body