Protista

Question 1

Is Protista eukaryotic or prokaryotic

Answer 1

Eukaryotic

Question 2

How does Protista reproduce

Answer 2

Asexually

Question 3

Is prosita single celled or multicelled

Answer 3

Single celled

Question 4

Nutrition of Protista

Answer 4

Heterotrophic [omnivorous]

Question 5

Function of osmoregulation?

Answer 5

To prevent bursting

Question 6

When does osmoregulation occur?

Answer 6

Cytoplasm is more concentrated than external environment

Question 7

Osmoregulation

Answer 7

External environment has lower concentration water enters
Contractile vacuole collects water and expands, moving to edge of cell
Contractile vacuole bursts and expels wafer

Question 8

What is the function of the cell membrane?

Answer 8

Gases diffuse in and out of cell membrane

Question 9

Function of food vacuoles?

Answer 9

Secrete acids to kill prey
Then produce enzymes to digest prey
[[Feeding!!]]

Question 10

Function of pseudopodia?

Answer 10

Extend in direction wishes to move, surround and engulf prey

Question 11

Function of endoplasm?

Answer 11

Moves into pseudopodia causing cell to move

Question 12

What are protoplasm of protista

Answer 12

Nucleus and cytoplasm

Question 13

Features of Amoeba

Answer 13

7.
Cytoplasm - endo and ecto plasm
Cell membrane 
Fat droplet
Waste products 
C vacuole
Food vacuole
Pseudopodia

Question 14

Disadvantage of amoeba

Answer 14

Responsible for causing sickness in people that drink untreated contaminated water
Cause vommiting and diarrhoea

Question 15

Suggest how excretion may occur in simple organisms such as amoeba?

Answer 15

Contractile vacuole - diffusion

Question 16

Suggest one reason why a contractile vacuole is more active in freshwater amoebae than in marine amoeba?

Answer 16

In fresh water amoeba, there is a high water concentration therefore due to osmosis, water moves into the cell which may lead to the bursting of cell. Therefore a contractile vacuole is needed to expel water and prevent from bursting