AP-Bio-HW-8-091009 - Objectives Homework #8 (091009):...

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Homework #8 (091009): Chapter 7 (due Friday 091009 ) Total points: 20 for Attempt on all questions ONE Concept Map: 10 points Objectives   1. Explain why phospholipids are amphipathic molecules. 2. Explain what freeze-fracture techniques reveal about the arrangement of proteins in membranes. 3. Describe the fluidity of the components of a cell membrane and explain how membrane fluidity is influenced by temperature and membrane composition. 4. Explain how cholesterol resists changes in membrane fluidity with temperature change. 5. Distinguish between peripheral and integral membrane proteins. 6. List six major functions of membrane proteins. 7. Explain the role of membrane carbohydrates in cell-cell recognition. 8. Explain how hydrophobic molecules cross cell membranes. 9. Distinguish between channel proteins and carrier proteins. 10. Define diffusion. Explain why diffusion is a spontaneous process. 11. Explain why a concentration gradient of a substance across a membrane represents
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This note was uploaded on 01/21/2012 for the course BIOL 101 taught by Professor Lexicon during the Spring '11 term at Ohlone.

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AP-Bio-HW-8-091009 - Objectives Homework #8 (091009):...

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