FLAGELLUM/CILIUMA Presentation By: Katie Scheuch

FOUND IN THE 3 DOMAINS OF LIFE

BacteriaArchaeaEukarya

FLAGELLUM Long and whip-like Used for movement Usually one or very

few 3 arrangements:

Polar flagellation Monopolar Bipolar

Peritrichous flagellation

Moves in a circular screw-like manner

CILIUMShort and hair-likeUsed for

movement and create current for particle movement

Movement is caused by a constant pulsing of the cilia

Many on one cell

BASIC STRUCTURE

Grows from a basal body Cylindrical array consisting of:

Complete microtubule extending to the tipPartial microtubule that does not go to the

tipMotor protein dynein

A single pair microtubules through the center producing a “9+2” arrangement

Plasma membrane Radial spokes Nexin

DISEASES Immotile-cilia syndrome

(related to airways) Retinitis pigmentosa Male infertility (inability for

the sperm to swim) Decreased female fertility

(immotile oviductal cilia) Polycystic kidney disease Developmental defects that

cause internal organs to be misplaced or malformed

1) What three ways can flagella form?

Monopolar, bipolar, Peritrichous

2) What structure do flagellum and cilium cells grow from?

Basal body

WEBSITES USED http://www.veritas-ucsb.org/library/origins/GR

APHICS-CAPTIONS/Cilium.html http://www.daviddarling.info/encyclopedia/F/

flagellum.html http://www.daviddarling.info/encyclopedia/F/

flagellum.html http://www.daviddarling.info/encyclopedia/

C/cilium.html http://www.tutorvista.com/content/biology/

biology-iii/cell-organization/nonmembranous-cell-organelles.php