Topic: Classification Aim: Explain the characteristics of some different protists.
Do Now: List the 6 kingdoms that exist. http://www.brainpop.com/science/diversityoflife/sixkingdoms/ HW: Textbook assignment about the different types of protists is due tomorrow!

Review: Identify the kingdom described.
1. Multi-cellular and autotrophic 2. Unicellular, eukaryotic, autotrophic or heterotrophic 3. Multi-cellular and heterotrophic 4. Multi-cellular, absorb digested food from the environment 5. Unicellular, prokaryotic, live in extreme environments 6. Multi-cellular, heterotrophic, ingest food 7. Unicellular, prokaryotic, most are beneficial, some are harmful

• Pseudopods: extensions of cytoplasm – to ENGULF food – to move around

pseudopods

• Phagocytosis: process in which pseudopods ENGULF food – Vacuole and lysosome fuse together to digest food

food vacuole pseudopods

• Cyclosis: used for transport & locomotion

• Contractile vacuole: contracts to release extra water
food vacuole pseudopods Contractile vacuole

- Live in freshwater & too much water diffuses in

FOOD VACUOLE NUCLEUS CELL MEMBRANE PSEUDOPOD CONTRACTILE VACUOLE

• Heterotrophic – Oral groove: “mouth” – Anal pore: opening in cell membrane to expel waste

gullet Oral groove Anal pore

Vacuole

• Cilia: hair-like projections covering the cell used for: – Movement – Sweeping food into the oral groove

cilia Oral groove Anal pore

cilia Oral groove Anal pore Contractile vacuole

cilia food vacuole gullet food vacuole Oral groove nucleus Anal pore Contractile vacuole

http://www.brainpop.com/science/diversityofl ife/protists/

Let’s summarize…
1. What kind of nutrition is used by protists such as ameba and paramecia?
2. Explain how ameba and paramecia ingest food.
3. Once food is ingested, explain how it is digested.
4. How do ameba and paramecia maintain water balance?

Review:
Ameba ingest large pieces of food by the process of
(1.) Diffusion (2.) Osmosis (3.) Phagocytosis (4.) Respiration

(1.) ribosome (2.) vacuole (3.) golgi body (4.) nuclear membrane

(1.) pseudopods (2.) flagella (3.) teeth (4.) cilia

The process which moves cytoplasm around the protist is known as
(1.) diffusion (2.) osmosis (3.) cyclosis (4.) locomotion

(1.) lysosomes (2.) contractile vacuoles (3.) oral grooves (4.) food vacuoles

In paramecia, wastes are expelled through the
(1.) oral groove (2.) anal pore (3.) lysosome (4.) contractile vacuole