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Chapter 5 REVIEW NOTES

Chapter 5 REVIEW NOTES - Chapter 5 Review Membrane basics...

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Chapter 5 Review
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Membrane basics Membranes are composed of a bilayer of 7)phospholipids. These are synthesized in the 8) SER of the cell. Fluid Mosaic Model: Membranes consist of a mosaic “sea” of phospholipids with many membrane proteins floating or immersed in this sea.
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Membrane molecule movements 14)Lateral & 15) rotational are spontaneous lipid and protein movements. 16)Flipping IS NOT spontaneous. Nonspontaneous movements require enzyme 17) flippase, for phospholipids alone however. For all intents and purposes, transmembrane proteins cannot flip under any circumstances.
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Membrane Fluidity Making 9)phospholipid tails more saturated 10) decreases membrane fluidity. Making 11)phospholipid tails more unsaturated 12) increases membrane fluidity. 13)cholesterol is a molecule that greatly stabilizes membranes.
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Membrane Proteins 18)Integral: Removing these proteins can only be done by destroying the membrane. There are two kinds:
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