FlinnPREP™ Inquiry Labs for AP® Biology: Diffusion and Osmosis
By: The Flinn Staff
Item #: FB2030
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In the Diffusion Osmosis Inquiry Lab Solution for AP® Biology, students participate in two baseline activities that branch out with opportunities for inquiry during which a hypothesis is formed, tested and justified.
Includes access to exclusive FlinnPREP™ digital content to combine the benefits of classroom, laboratory and digital learning. Each blended learning lab solution includes prelab videos about concepts, techniques and procedures, summary videos that relate the experiment to the AP® exam, and standards-based, tested inquiry labs with real sample data. FlinnPREP™ Inquiry Lab Solutions are adaptable to you and how you teach with multiple ways to access and run your AP® labs.
Big Idea 2, Investigation 4, Science Practices 2, 4, 5
How do cell membranes help regulate internal cellular makeup? In this Inquiry Lab Kit, students participate in two Baseline Activities that branch out with Opportunities for Inquiry during which students will develop a testable hypothesis and then design an experiment that they can plan, discuss, evaluate, execute and finally justify to their peers.
In the first Baseline Activity, students study the diffusion of ions into a model cell. Questions like, “How does the rate of diffusion influence the ability of a cell to obtain needed nutrients?” and “How might the surface area-to-volume ratio affect the rate of diffusion into a cell?” help guide the students to design their own experiments. In the second Baseline Activity, students test the ability of various substances to diffuse across a semipermeable dialysis membrane and analyze results to identify solutions as hypotonic, hypertonic or isotonic. Students use these observations and guiding questions like, “Is the rate of diffusion directly proportional to the solute concentration?” and “How would diffusion of a starch solution be different than that of a protein?” to develop their inquiry experiments.
Includes detailed teacher notes, reproducible student handouts and enough materials for eight groups of students to complete the Baseline Activities and to prepare for the inquiry activities. A 0.01-g precision balance is required and available separately. A refill kit for the Diffusion and Osmosis Inquiry Lab Kit for AP® Biologyis also available (FB2086).
Materials Included in Kit: Agar, 40 g Albumin, 50 g Dextrose, 100 g, 2 Hydrochloric acid solution, 0.1 M, 500 mL, 3 Phenolphthalein solution, dropper bottle, 1%, 30 mL Sodium chloride, 75 g Sodium hydroxide solution, 0.1 M, 150 mL Sucrose, lab grade, 1kg Cup, clear plastic, 9 oz, 40 Dialysis tubing, 10 feet, 4 Knife, clear plastic, 8 Ruler, metric, 15 cm, white, 8 Spoon, clear plastic, 8 Tray, white bottom, clear lid, 28 oz, 8⅛" x 5½" x 1", 2
*AP is a registered trademark of the College Board, which was not involved in the production of, and does not endorse, these products.
Correlation to Next Generation Science Standards (NGSS)†
Science & Engineering Practices
Asking questions and defining problems Developing and using models Planning and carrying out investigations Analyzing and interpreting data Using mathematics and computational thinking Constructing explanations and designing solutions Obtaining, evaluation, and communicating information
Disciplinary Core Ideas
HS-PS2.A: Forces and Motion HS-LS1.A: Structure and Function HS-LS1.B: Growth and Development of Organisms HS-LS1.C: Organization for Matter and Energy Flow in Organisms
Patterns Cause and effect Scale, proportion, and quantity Systems and system models Energy and matter Structure and function Stability and change
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.