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Diffusion and Osmosis—Classic Lab Kits for AP® Biology

By: The Flinn Staff

Diffusion and Osmosis Laboratory Kit for Classic AP* Biology Lab 1 (3 Groups)
Diffusion and Osmosis Laboratory Kit for Classic AP* Biology Lab 1 (3 Groups)
Diffusion and Osmosis Laboratory Kit for Classic AP* Biology Lab 1 (3 Groups)
Diffusion and Osmosis Laboratory Kit for Classic AP* Biology Lab 1 (3 Groups)
In the Diffusion and Osmosis Classic Lab Kit for  AP® Biology, explore diffusion and osmosis using a selectively permeable membrane. Refill is available.

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Students explore the processes of diffusion and osmosis using a selectively permeable membrane and investigate the relationship between solute size, solute concentration and the passage of water through the membrane. The water potential of potatoes is determined and plasmolysis is studied as well. Compound microscopes, 0.01-g precision balance, Elodea, potatoes and a red onion are required and available separately.

Materials: Clear plastic cups, 9-oz. Iodine solution* Cover slips, Graduated pipets, Dextrose (glucose)*, Potato slicer, Dialysis tubing clamps, Scalpels, Dialysis tubing, Sodium chloride solution, Weighing dishes, Starch, Glass slides, Sucrose, Glucose test strips

*Denotes items included with refill kit

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Planning and carrying out investigations
Analyzing and interpreting data
Using mathematics and computational thinking

Disciplinary Core Ideas

HS-LS1.A: Structure and Function

Crosscutting Concepts

Cause and effect
Systems and system models
Structure and function
Stability and change

Performance Expectations

HS-LS1-1. Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins, which carry out the essential functions of life through systems of specialized cells.
HS-LS1-2. Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.
HS-LS1-3. Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.