Section 1: Cell Structure and Function Motility A....
Transcript of Section 1: Cell Structure and Function Motility A....
1
Section 1: Cell Structure and Function
Motility
A. Flagella
Section 1: Cell Structure and Function
Motility
B. Flagellum Structure
2
Section 1: Cell Structure and Function
Motility
B. Flagellum Structure
Section 1: Cell Structure and Function
Motility
B. Flagellum Structure
The flagellar apparatus consists of several distinct proteins:
3
Section 1: Cell Structure and Function
Motility
B. Flagellum Structure
Section 1: Cell Structure and Function
Motility
C. Chemical Structure
4
Section 1: Cell Structure and Function
Motility
C. Chemical Structure
Section 1: Cell Structure and Function
Motility
C. Chemical Structure
5
Section 1: Cell Structure and Function
Motility
C. Chemical Structure
Section 1: Cell Structure and Function
Motility
C. Chemical Structure
6
Section 1: Cell Structure and Function
Motility
D. Flagellum motility
Section 1: Cell Structure and Function
Motility
D. Flagellum motility
Ex. GN cell
7
Section 1: Cell Structure and Function
Motility
D. Flagellum motility
Section 1: Cell Structure and Function
Motility
D. Flagellum motility
8
Section 1: Cell Structure and Function
Motility
D. Flagellum motility
Section 1: Cell Structure and Function
Motility
D. Flagellum motility
How fast do bacterial cells move?
9
Section 1: Cell Structure and Function
Motility
D. Flagellum motility
Relative Speeds of Organism
Organism Kilometers/hr Body lengths/sec
Section 1: Cell Structure and Function
Motility
E. Gliding motility
10
Section 1: Cell Structure and Function
Motility
E. Gliding motility
Section 1: Cell Structure and Function
Motility
F. Periplasmic flagella - spirochetes
11
Section 1: Cell Structure and Function
Motility
F. Periplasmic flagella - spirochetes
So, why are bacteria motile?
12
Section 1: Cell Structure and Function
Motility
G. Taxis or Directed Motility
Chemotaxis -
Phototaxis -
Aerotaxis -
Magnetotaxis -
Section 1: Cell Structure and Function
Motility
G. Taxis or Directed Motility
Chemotaxis -
Phototaxis -
Aerotaxis -
Magnetotaxis -
Bacillus subtilis on agar withhigh to low (a-d) peptone conc.
13
Section 1: Cell Structure and Function
Motility
G. Taxis or Directed Motility
Chemotaxis -
Phototaxis -
Aerotaxis -
Magnetotaxis -
Section 1: Cell Structure and Function
Motility
G. Taxis or Directed Motility
Chemotaxis -
Phototaxis -
Aerotaxis -
Magnetotaxis -
Low tech backup
14
Section 1: Cell Structure and Function
Motility
G. Taxis or Directed Motility
Chemotaxis -
Phototaxis -
Aerotaxis -
Magnetotaxis -
Section 1: Cell Structure and Function
Motility
G. Taxis or Directed Motility
Chemotaxis -
Phototaxis -
Aerotaxis -
Magnetotaxis -
15
Section 1: Cell Structure and Function
Motility
G. Taxis or Directed Motility
Chemotaxis -
Phototaxis -
Aerotaxis -
Magnetotaxis -
1 µm
Section 1: Cell Structure and Function
Motility
G. Taxis or Directed Motility
Chemotaxis -
Phototaxis -
Aerotaxis -
Magnetotaxis -