01:119:115 Lecture Notes - Lecture 3: Hydrogen Atom, Hydrophile, Cierva C.4
27 Sep 2016
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Biological molecules (lecture 3: organic chemistry, all about carbon based compounds. A cell is ~ 70% - 90% h2o. Carbon backbone of organic molecules (a. 2. a. 1) figure 4. 5. Varies in length variations (a. 2. c. 1) (a. 2. c. 2) branching (a. 2. c. 3) possibilities of double bonds (db)(position of db) (a. 2. c. 3. a) internal of skeleton (a. 2. c. 3. b) terminal (at the end) (a. 2. c. 4) ring presence possibilities (a. 2. c. 5) Skeletal properties affect molecular prop. /geometry (a. 2. d. 1) figure 4. 4 (a. 2. d. 2) mainly geometry (a. 2. d. 3) dictates what mol. can/can"t do. Number of valence electrons dictate chemical property and # of molecular bonds formed (a. 2. e. 1) *h, o, n and c make up more than 90% of human mass: hydrocarbons. Only carbon and hydrogen (b. 1. a. 1) ex: ch4 (methane) H and c linked by uncharged, nonpolar covalent bonds (super strong bond)(minimal en) (b. 1. b. 1) hydrophobic. Can contain functional group (b. 1. c. 1) key to molecular function (b. 1. c. 1. a) creates different functions in molecule (b. 1. c. 1. a. i) i. e: polar/hydrophobic, etc. (b. 1. c. 2) replace hydrogen with something else (b. 1. c. 2. a) ex: estradiol versus testosterone (b. 1. c. 3) 7 key groups.
