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
