Osmoregulation
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15 Terms
Q: What is tonicity?
A: Ability of a solution to cause water movement.
Q: What is an isotonic solution?
A: Equal solute concentration.
Q: What happens to cells in isotonic solution?
A: No net water movement.
Q: What is a hypertonic solution?
A: Higher solute concentration outside.
Q: What happens in hypertonic solution?
A: Water leaves the cell.
Q: Animal cells in hypertonic solution?
A: Shrivel (crenate).
Q: Plant cells in hypertonic solution?
A: Plasmolysis.
Q: What is plasmolysis?
A: Plasma membrane pulls away from cell wall.
Q: What is a hypotonic solution?
A: Lower solute concentration outside.
Q: Animal cells in hypotonic solution?
A: Swell and may lyse.
Q: Plant cells in hypotonic solution?
A: Become turgid.
Q: Why are plant cells resistant to bursting?
A: Cell wall.
Q: What is a turgid plant cell?
A: Firm due to water pressure.
Q: What is a flaccid plant cell?
A: Limp due to low turgor pressure.
Q: What is osmoregulation?
A: Regulation of water balance.