Amoeba Flashcards
What kingdoms does amoeba belong to?
Protista/protists
What are the main features of members of kingdom Protista?
1)Eukaryotic
2)unicellular
3)reproduction is asexual
Name the cell parts which are unique to amoeba
1)Pseudopodia
2)food vacuole
3)contractile vacuole
What does pseudopodia do?
1)Allows movement
2)Surrounds and engulfs pray
What does a food vacuole do?
Stores food
What does a contractile vacuole do?
Osmoregulation (absorbs water to prevent cell from bursting)
What cell parts does amoeba have un common with most cells?
1)nucleus
2)cytoplasm
3)cell membrane
How does amoeba get nutrition/food?
Takes food from other organisms, does not make its own food
What type of way does amoeba get food?
Heterotrophic
Describe how amoeba get its food?
1)amoeba uses pseudopodia to move to then surround and engulf its prey
2)a food vacuole forms
3)ezy,se are released to digest prey and nutrients are absorbed
What is the habitant of amoeba?
Freshwater ponds and streams
Amoeba doesn’t have a cell wall. By what process does amoeba prevent itself from bursting when water enters by osmosis?
Osmoregulation
What is Osmoregulation?
Controlling water and solute concentration of fluids
Describe how Osmoregulation occurs?
1)Water enters amoeba by osmosis
2)Excess water is absorbed by the contractile vacuole
3)contractile vacuole moves to surface of cell and bursts expelling the excess water
What organ is responsible for Osmoregulation in humans/animals?
Kidneys
Suggest why the contractile vacuole in freshwater amoeba is more active the. In a marine amoeba?
1)Freshwater amoeba has a high rate of osmosis into the cell
2)
High water concentration difference between fresh water and the cytoplasm of the amoeba cell
Why do plants not require a contractile vacuole?
Cell wall prevents it from bursting
