Osmoregulation (Leaving Cert Biology): Flashcards
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Osmoregulation definition
Osmoregulation definition
Maintenance of balance & salt balance in body fluids
Organelle for osmoregulation in amoeba
Organelle for osmoregulation in amoeba
Contractile vacuoles
Water concentration: freshwater vs amoeba cytoplasm
Water concentration: freshwater vs amoeba cytoplasm
Higher outside than inside the cytoplasm
Process by which water enters amoeba
Process by which water enters amoeba
Osmosis
What amoeba must constantly remove
What amoeba must constantly remove
Excess water
Osmosis definition
Osmosis definition
Movement of water molecules from high to low water concentration across semi-permeable membrane
What happens to contractile vacuole as water collects
What happens to contractile vacuole as water collects
It swells
Where contractile vacuole moves
Where contractile vacuole moves
To the edge of the cell
What happens when contractile vacuole reaches cell edge
What happens when contractile vacuole reaches cell edge
It bursts and expels water out of the cell
Why osmoregulation cycle repeats continuously
Why osmoregulation cycle repeats continuously
To continuously remove excess water