osmosis

• What is osmosis?

  The diffusion of water through a membrane
• What does osmosis involve in terms of solutions?

  Water moves from dilute to concentrated solutions
• How does osmosis affect animal cells in water?

  Water enters, causing the cell to expand
• What happens to an animal cell in a concentrated solution?

  Water exits, causing the cell to shrink
• What is the cytoplasm of cells described as?

  A relatively concentrated solution
• What is the effect of osmosis on plant cells in water?

  Water enters, causing the cell to expand
• What prevents plant cells from bursting when they expand?

  The cell wall provides structural support
• What term describes a swollen plant cell?

  Turgid
• What happens to a plant cell in a concentrated solution?

  Water exits, causing the cell to shrink
• What term describes a shrunk plant cell?

  Flaccid
• What are the key points about osmosis in cells?

  • Osmosis is the diffusion of water.
  • In animal cells, water entering causes expansion and potential bursting.
  • In concentrated solutions, water exits causing shrinkage.
  • In plant cells, water entering causes swelling (turgid) without bursting due to the cell wall.
  • In concentrated solutions, water exits causing shrinkage (flaccid).
• Where can you find questions on osmosis?

  In the vision workbook
• What is the role of a partially permeable membrane in osmosis?

  It allows water but not sugar to pass
• How does the concentration of water differ in dilute and concentrated solutions?

  High in dilute, low in concentrated
• How does osmosis differ from diffusion?

  Osmosis specifically involves water movement