Amoeba

Question 1

What kingdom do amoeba belong to?

Answer 1

Protista

Question 2

How do amoeba get their nutrition?

Answer 2

Heterotrophic (do not make their own food) omnivores (eat both plants and animals)

Question 3

Draw and label a diagram of amoeba

Answer 3

Question 4

Are amoeba multicellular or unicellular?

Answer 4

Unicellular

Question 5

Do amoeba have a cell wall?

Answer 5

No

Question 6

Do amoeba have a cell membrane?

Answer 6

Yes

Question 7

Are amoeba prokaryotic or eukaryotic?

Answer 7

Eukaryotic

Question 8

What is the function of food vacuoles in amoeba?

Answer 8

Secrete acid to kill prey. Secrete enzymes to digest food which is then absorbed

Question 9

Describe the ectoplasm

Answer 9

Outer cytoplasm. Stiffer

Question 10

Describe endoplasm

Answer 10

Inner cytoplasm. Grainy due to it containing food vacuoles and waste products

Question 11

What is the function of the contractile vacuole?

Answer 11

Water balance

Question 12

What is the function of the pseudopodia?

Answer 12

Movement to engulf its prey. Acts as a phagocyte. False legs

Question 13

Explain how amoeba control water balance

Answer 13

• Osmoregulation - controlling water balance
• The contractile vacuole carries out osmoregulation in amoeba. Without it amoeba would burst and die
• In freshwater the amoeba’s cytoplasm is more concentrated than its external environment. Water then enters the amoeba by osmosis.
• The contractile vacuole collects water
• It expands and touches the cell membrane
• It bursts and releases the water

Question 14

Draw diagram to show how amoeba controls water balance

Answer 14

N/A