Protista (LC 2026) (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does osmoregulation maintain?
What does osmoregulation maintain?
and salt balance
Which structure carries out osmoregulation in amoeba?
Which structure carries out osmoregulation in amoeba?
Contractile vacuoles
In freshwater, how does water concentration outside compare to inside the amoeba?
In freshwater, how does water concentration outside compare to inside the amoeba?
Higher outside
By what process does water enter the amoeba?
By what process does water enter the amoeba?
Osmosis
What must freshwater amoeba constantly remove?
What must freshwater amoeba constantly remove?
Excess water
Osmosis moves water from areas of what concentration to what?
Osmosis moves water from areas of what concentration to what?
High to low
What does osmosis require?
What does osmosis require?
Semi-permeable membrane
What happens to the contractile vacuole as water collects?
What happens to the contractile vacuole as water collects?
It swells
Where does the contractile vacuole move before expelling water?
Where does the contractile vacuole move before expelling water?
Edge of the cell
What does the contractile vacuole do at the cell edge?
What does the contractile vacuole do at the cell edge?
Bursts and expels water