Cell Biology

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Cell Biology
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Chapter Nine The MicroscopicWorld

• 9.1 Protozoans
• 9.2 Bacteria
• 9.3 Viruses

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Investigation 9A
Protozoans

• What are the characteristics of protozoans?

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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.
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9.1 Structure and function of protozoans

• Ciliates are a group of protozoans that move by
  waving tiny, hair-like organelles called cilia.

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9.1 Structure and function of protozoans

• Amoebas are protozoans that move by means of a
  pseudopod. (false foot.)

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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.

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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.