Biological Solutions Notes Objective: You will be able to explain the differences between hypotonic, hypertonic and isotonic solutions and describe their effects on cells. Itinerary: Powerpoint (definitions) Potato experiment demonstration Celery demonstration

Word Definition Picture a. Greater concentration of solute inside cell than outside Hypotonic solution water water Inside cell

Word Definition Picture Red blood cell Water leaves solution and goes into the cell. Cell will get bigger and can burst! Hypotonic solution Plant cell

Word Definition Picture a. Greater concentration of solute outside of cell than inside Hypertonic solution water water Inside cell

Word Definition Picture b. Water leaves cell and goes into solution. Cell will shrivel up. Red blood cell Hypertonic solution c. Can lead to dehydration Plant cell

Word Definition Picture Concentration inside cells is equal to that of the solution Cell is at equilibrium Isotonic solution

Which is which? Label each one as: hypotonic, hypertonic or isotonic 1. 2. 3.

Which is which? Label each one as: hypotonic, hypertonic or isotonic 2. 1. 3.

What happens to cells in this environment? Type of solution Definition What happens to cells in this environment? Hypotonic Hypertonic Isotonic Greater concentration of solute inside cell than outside Water goes into the cell. Cell will get bigger and can burst! Greater concentration of solute outside of cell than inside Water leaves the cell. Cell will get shrivel up and dehydrate Concentration inside cells is equal to that of the solution Cell is at equilibrium