Osmosis

• What is osmosis?

  Movement of water particles across a membrane from an area of high concentration to an area of low concentration
• Why is osmosis important for cells?

  It provides water for chemical reactions
• What does a partially permeable membrane allow?

  Only tiny molecules like water to pass
• What happens to a strong sugar solution during osmosis?

  It becomes more dilute as water enters
• What occurs when a cell is short of water?

  Water moves into the cell from outside
• What happens when a cell has lots of water?

  Water is drawn out of the cell by osmosis
• How does the concentration of the surrounding solution affect water movement in cells?

  It determines whether water enters or exits