Cell Membrane Simulation Background information Do Now gather
Cell Membrane Simulation Background information
Do Now: gather materials • Each student needs: – Goggles, apron (optional), handout, sheet of paper • Each group needs: – Sharpie, paper towel
Iodine as an indicator of starch In the presence of starch, iodine solution is blue-black or purple in color In the absence of starch, iodine solution is brown or amber in color
Iodine as an indicator of starch
Diffusion and Osmosis
Diffusion and Osmosis
Iodine vs Starch • How do particles of iodine compare to particles of starch? • Hint: – Iodine is an element. – Starch is a polysaccharide.
Introduction • State the problem or question you are trying to answer – You may use the wording in the handout if you wish • Describe any background information about the subject – Describe the process(es) which you expect will have an effect – Explain how you will know what will happen – Hint: use the info in this Power. Point! • Create a hypothesis – – Write a possible solution for the problem Make sure it is a complete sentence Make sure it is testable Use an if-then statement, when possible Note: the introduction takes place before you do the lab. You should not include procedures in this section. Example: If a plastic bag is separated by equal concentrations of iodine solution and starch solution…
Conclusion • State whether your hypothesis is supported or rejected – Restate the question and the hypothesis • Explain why your hypothesis was supported or rejected using data from the lab – Explain how you know! – Refer to the information in your Introduction
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