Lab 1: Cell Physiology

Feb 3rd, 2012
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Washington State University
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Human Physiology Lab Lab 1: Cell Physiology Worksheet with answers + PhysioEx 9.0 Four (4) pages

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Human Physiology Lab - Zoology 2200L Lab 1 Cell Physiology Name: Nicole ValenzuelaBackground: Our cells are surrounded by a semi-permeable membrane made up of a bilayer of amphipathic phospholipids. Define amphipathic: Amphipathic is a molecule having both polar and nonpolar regions. An example of an amphipathic is a phospholipid molecule.Label the phospholipid bilayer shown below: 1. Hydrophilic head2. Hydrophobic tailsEverything our cells need must cross the cell membrane. Lipid soluble or hydrophbic molecules can freely cross through the membrane while hydrophilic and/or charged molecules can only cross the membrane either through pores, channels or aided by specific transporters. In this week's lab you will be investigating cell transport mechanisms using the PhysioEx simulation software found on the Mastering A&P page.Go to http://www.masteringaandp.com/ and click on the blue "Study area" button on the upper right hand side of the main course page. Next click on PhysioEx 9.0 on the left side of the page.Finally, click "Access PhysioEx 9.0" at the top of the page, then click "Exercise 1: Cell Transport Mechanisms and Permeability" at the top of

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