Protista

Question 1

Amoeba

Answer 1

Protozoan
Unicellular
Heterotrophic
Lives in freshwater

Question 2

Structure of amoeba

Answer 2

Cell membrane
Cytoplasm
Nucleus
Pseudopod
Food vacuole
Contractile vacuole

Question 3

Cell membrane

Answer 3

Semi permeable

Question 4

Cytoplasm is decided into two

Answer 4

Endoplasm
Ectoplasm

Question 5

Endoplasm

Answer 5

Fluid like
Grainy appearance because of food vacuole and waste material

Question 6

Ectoplasm

Answer 6

Can become soft in places to allow development of pseudopodia

Question 7

Pseudopodia

Answer 7

‘False feet’
Produce at any point, no fixed location
Extent in the direction amoeba wants to move
Develop when ectoplasm softens
Used to engulf it’s prey

Question 8

Food vacuole

Answer 8

Feeds by surrounding it prey with pseudopodia and secreting digestive enzymes
Food can be stored in the vacuole

Question 9

Contractile vacuole

Answer 9

Cytoplasm is more concentrated that outside solution, due to osmosis water wants to enter amoeba, excess water enters conract vacuole and the vacuole moves to the edge of the cell where it bursts and expels water

Osmoregulation without it the amoeba would burst