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AP® Biology Investigation #4: Diffusion and Osmosis

Students will study the movement of water and nutrients across a cell

membrane and observe osmosis in living tissue. They will then investigate

the relationship between surface area and volume as it relates to cells and

diffusion. They will also examine the concept of molarity and how it relates

to osmotic potential and the movement of water. Students will also be able

to explain how cell size and shape affect the overall rate of nutrient intake

and water elimination. Students will also use plant tissue to determine the

molarities of unknown solutions based on the direction and degree of water

movement. This kit contains enough materials for 8 groups. Teacher’s manual

and Student Study Guide copymasters are included. Meets AP® Science

Practices 2, 4, and 5, and Big Idea 2.



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