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
