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

Ameba/ Amoeba

•Heterotrophic

•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

pseudopods

food vacuole

•Cyclosis: used for transport & locomotion

•Contractile vacuole: contracts to release extra water

Contractile vacuole

pseudopods

food vacuole

- Live in freshwater & too much water diffuses in

NUCLEUS

PSEUDOPOD

CONTRACTILE VACUOLE

FOOD VACUOLE

CELL MEMBRANE

Paramecium

• Heterotrophic–Oral groove: “mouth”–Anal pore: opening in cell

membrane to expel waste

Oral groove

Anal pore

gullet

Vacuole

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

Oral groove

cilia

Anal pore

•Contractile vacuole

Oral groove

cilia

Contractile vacuole

Anal pore

Oral groove

cilia

Contractile vacuole

Anal pore

food vacuole

gullet

food vacuole

nucleus

http://www.brainpop.com/science/diversityoflife/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

Once food is ingested by a paramecium, the food is surrounded by a

(1.) ribosome

(2.) vacuole

(3.) golgi body

(4.) nuclear membrane

A paramecia uses ___ for movement and capturing food.

(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

Some protists remove excess water with the help of

(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