AP Biology Investigation #4 Diffusion and Osmosis Kit for 8 Groups

This AP Biology Investigation #4 - Diffusion and Osmosis kit allows students to study water and nutrient movement across cell membranes through experiments using agar cubes, dialysis tubing, microscopy, and plant tissue. Students examine the relationship between surface area, volume, and diffusion rates, and use plant tissue to determine the molarities of unknown solutions. Materials sufficient for 8 groups (32 students). Meets AP Science Practices 2, 4, 5 and Big Idea 2. The kit includes 45g agar, 15mL bromothymol blue concentrate, 50mL of 2.0M hydrochloric acid, dialysis tubing, agar block casting trays, microscope slides, plastic cups, coverslips, plastic knives and stirrers, cork borer, metric rulers, and quick solutions for sucrose (multiple molarities), sodium chloride, glucose, ovalbumin, and food coloring. Distilled water, electronic balance, onion, forceps, microscopes, and potatoes are required but not included. For laboratory use only.