BIO 244 Chapter 6 Review Questions-SP08

BIO 244 Chapter 6 Review Questions-SP08 - BIO 244 Dr...

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BIO 244 Dr. Gaillard Spring 2008 Chapter 6 Review Questions 1. What are lipids? 2. Most lipids are contain units of isoprene or ____________. 3. What are steroids? What is an example of a steroid? 4. Fats are also known as _____________ or _____________. 5. What is the composition of a fat molecule? Where are the ester linkages located in a fat molecule? 6. What are the four major components of a phospholipid? 1 polar head group, phosphate group, glycerol, and 2 fatty acids 7. What is the meaning of the term amphipathic? What is an example of a molecule that is amphipathic? 8. If you add phospholipids to a beaker of water, what structures will spontaneously form? Why? 9. What are planar bilayers (hint: the divided beaker experiments)? How are they used to perform experiments on membrane permeability? 10. How permeable is the lipid bilayer to each of the following types of substances: large uncharged polar molecules, small uncharged polar molecules, ions, and hydrophobic molecules? 11. How does the type of fatty acid attached to a phospholipid affect membrane permeability and fluidity (hint: think saturated vs. unsaturated fatty acids)? How does the
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