Transcript Cell Biology Chapter Nine: The Microscopic World • 9.1 Protozoans • 9.2 Bacteria • 9.3 Viruses.

Cell Biology
Chapter Nine: The Microscopic
World
• 9.1 Protozoans
• 9.2 Bacteria
• 9.3 Viruses
Investigation 9A
Protozoans
• What are the
characteristics
of protozoans?
9.1 Protozoans
• A protozoan is a
single-celled
eukaryotic animal.
• Protozoans are most
often placed in the
Kingdom Protista
with algae and slime
molds.
Protozoans need a moist
environment to survive.
9.1 Structure and function of
protozoans
• Ciliates are a group
of protozoans that
move by waving
tiny, hair-like
organelles called
cilia.
9.1 Structure and function of
protozoans
• Amoebas are protozoans that move by
means of a pseudopod. (“false foot.”)
9.1 Structure and function of
protozoans
• Flagellates are a
group of protozoans
that move using a
whip-like organelle
called a flagellum.
• A euglena is a
flagellate commonly
found in pond water.
9.1 Structure and function of
protozoans
• A parasite is an organism that lives in or on
another organism.
• Sporozoans are protozoan parasites in the bodies
of certain animals.