BIO 181 Chapter Notes - Chapter 3: Osmosis, Facilitated Diffusion, Peripheral Membrane Protein

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22 Sep 2016
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Smaller subunits linked by covalent bonds b. i. 1. b. i. 2. Condensation reaction is type of rxn (reaction) where h2o is lost and covalent bond forms b. ii. 1. Lipids (fats, oils, waxes: not soluble in h2o a. i. One glycerol linked to three fatty acids c. i. 1. c. i. 2. Contains one or more oh groups (hydroxy) c. i. 3. Amphipathic- one end differs from the other in chemistry c. ii. 2. a. Number of carbons vary between fatty acids c. ii. 2. b. i. Unsaturated fatty acid has double bond instead of h c. ii. 3. a. i. Saturated fats stack to make light crystal c. ii. 3. c. Unsaturated fatty acids have lower melting point c. ii. 3. d. i. Organisms have more unsaturated fats in their cells because cell membrane are (need to be) fluid. c. ii. 4. Formation of ester bonds between glycerol and fatty acid tails: phospholipids d. i. Differs from triglycerides in that one fatty acid is replaced by phosphate (with something attached) d. ii. 1. Different r groups confer different chemical properties to phospholipid d. ii. 2. a. R could be hydrophilic, hydrophobic, acidic, basic, large, small d. ii. 3.

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