BIOL 1107 Lecture Notes - Lecture 2: Hydrogen Bond, Macromolecule, Electronegativity
Document Summary
Nonpolar covalent bond: electrons are evenly shared between 2 atoms and bond is symmetrical. When combined w/ another o atom becomes molecule and electrons are shared =ly. Than other atom (electrons closer to one atom than the other. Than h. when combined electrons move closer to o atom than h so o becomes more negatively charged while h becomes positively charged: allows this molecule to associate w/ other molecules bc of level of charge, electroneg. In atom/molecule drive chemical reactions: electron carrier molecule (fadh2) are utilized in this reaction give up electrons bc there is an atom in front of them in the reaction with a slightly greater electroneg. Bc it ripped an electron away from something else. Being either exothermic or endothermic moved along bc of oxidation: certain atoms w/ higher electroneg. Can attract atoms set up covalent bond & possibility to share (doesn"t mean shared equally)
