Download Cell Motility

CELL MOTILITY
HOW DO MICROORGANISMS AND YOUR CELLS MOVE?
FIRST, SOME MOTIVATION
• DEEP WITHIN THE POND WATER, LIES A SECRET!
HTTP://WWW.YOUTUBE.COM/WATCH?V=0-6DZU4GOJO
HOW CELL MOTILITY WORKS
• CELL MOTILITY (MOVEMENT) IS MAINLY DRIVEN BY A NETWORK OF
ACTIN IN THE CELL MEMBRANE.
• THIS NETWORK IS CONTROLLED BY THE CYTOSKELETON
• ACTIN IS A PROTEIN THAT CONTRACTS THROUGH POLYMERIZATION
• IT RELAXES THE DEPOLYMERIZATION
WHAT YOU’RE DOING
• WATCH THE VIDEO ON THE TYPES OF CELL MOVEMENT
• THIS IS WHAT YOU DESCRIBE AND DRAW.
Type of
Movement
Description
Example
Picture
MOVEMENT TYPE #1- PSEUDOPODIA
• DEFINITION – A TEMPORARY PROTRUSION OR RETRACTILE PROCESS OF
PART OF THE CELL’S CYTOPLASM
• EXAMPLE - AMOEBA
• AMOEBA IN MOTION
HTTP://WWW.YOUTUBE.COM/WATCH?V=7PR7TNZJ_PA
• AMOEBA EATS TWO PARAMECIUM:
HTTP://WWW.YOUTUBE.COM/WATCH?V=PVOZ4V699GK
MOVEMENT TYPE #2 – FLAGELLA
• DEFINITION – SLENDER, WHIP-LIKE APPENDAGE THAT HELPS
MICROORGANISMS TO MOVE
• EXAMPLE – EUGLENA, SPERM CELLS
• MOVEMENT OF EUGLENA IN PHASE CONTRAST
HTTP://WWW.YOUTUBE.COM/WATCH?V=JL0TZAWUQWK
• TWO ORGANISMS USING FLAGELLA
HTTP://WWW.YOUTUBE.COM/WATCH?V=MD0PTDRXXVW
MOVEMENT TYPE #3 - CILIA
• DEFINITION – MINUTE, HAIR-LIKE STRUCTURES THAT OFTEN SURROUND THE
CELL LIKE A FRINGE
• EXAMPLE – PARAMECIUM, LUNG CELLS
• PARAMECIUM EATING AND MOVING
HTTP://WWW.YOUTUBE.COM/WATCH?V=A4AZE5FQ284
• WAVE OF CILIA
HTTP://WWW.YOUTUBE.COM/WATCH?V=J3CUQRDGPMU