Osmosis Claim Evidence Reasoning

Grade 8•45 minutes•Students will use data to write a claim with evidence

Learning Objective

I can construct a claim about osmosis and support it with evidence from data.

Practice Questions

This lesson includes 3 practice questions to reinforce learning.

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1. Define osmosis and describe how water potential is affected by solute concentration.

2. A cell is placed in a solution. After an hour, the cell has shrunk. Based on this observation, what claim can you make about the relative solute concentrations of the cell and the surrounding solution?

3. You have two beakers. Beaker A contains a solution with a high solute concentration, and Beaker B contains a solution with a low solute concentration. If a semi-permeable membrane separates the two beakers, in which direction will water move, from A to B, or from B to A? Explain your reasoning.

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CER (Claim, Evidence, Reasoning) in Biology

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