This lab should help students understand the extremely important role of gradients. Focus on the idea that gradients occur whenever there is a concentration difference from high to low. Gradients do not just occur in liquids there can be gradients in temperature, Na and K ions, smoke, perfume, people, etc.<\/span><\/p>\n Students should be familiar with the terms <\/span>solute<\/span><\/i>, <\/span>solvent<\/span><\/i>, <\/span>hyper-<\/span><\/i>and <\/span>hypotonic<\/span><\/i>. <\/span>Osmosis<\/span><\/i> refers to the movement of water and <\/span>dialysis<\/span><\/i> typically to the movement of solute. Students may or may not comprehend the concept of <\/span>ion<\/span><\/i>, but you can simply leave it as a charged atom or particle or molecule. Unfortunately, if they don\u2019t have some clue about ions or at least that NaCl becomes Na+ and Cl- when dissolved, the understanding what <\/span>conductivity<\/span><\/i> tells them is difficult. The pre-lab explains it, but be prepared.<\/span><\/p>\n Outcomes: <\/b>\u00a0Inquiry 4, Inquiry 5, Inquiry 6, Inquiry 7, Inquiry 8; SA\/V 1, SA\/V 2; Gradients 1, Gradients 2, Gradients 3, Gradients 4; Membrane Transport 2, Membrane Transport 3, Membrane Transport 5<\/p>\n Per lab group<\/span><\/p>\n Shaw, T.J. & French, D.P. (2018). Authentic Research in Introductory Biology, 2018 ed. Fountainhead, Fort Worth.<\/p>\n PreLab Activity<\/span><\/a><\/p>\n Quiz<\/span><\/a><\/p>\n Keys and additional instructor-only notes\u00a0<\/a>(you will be asked to sign into a Google account and request access to view instructor materials)<\/p>\nMaterials<\/strong><\/h3>\n
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Assessments<\/strong><\/h3>\n