protista (amoeba)

cell membrane

keeps the cell contents together and allows for diffusion of substanes, does not provide rigid structure

food vacuole

secretes acids and enzymes to kill and digest the ingested prey

nucleus

contains genetic material and co-ordinates the cell activities

pseudopodia

needed for movement and engulfing prey

• ectoplasm moves out in the direction the amoeba wants to move

• then the endoplasm flows into the pseudopodia

contractile vacuole

needed for osmoregulation

• water rushes in by osmosis in a less concentrated solute

• excess water enters the contractile vacuole

• contractile vacuole moves to the edge of the amoeba and expels the water

is protista eukaryotic or prokaryotic

eukaryotic

is protistas autotrophic or heterotrophic

heterotrophic

is protista muti or uni cellular

unicellular

examples of protistas

• amoeba

• algae

• paramecium