BIOL 4350 Study Guide - Comprehensive Midterm Guide: Alpha Helix, C-Terminus, N-Terminus
Document Summary
H, o, n, c make up 99% by weight: smallest atoms that can share 1, 2, 3, 4 electrons respectively, o, n, c are the only elements that can form strong covalent bonds. Tendency of an atom to hog electrons in a covalent bond. Increases in atoms as you go up and across (to the right) Determines what kind of bonds will form between the 2+ atoms: covalent bonds. Around 0. 1nm or 1 angstrom: noncovalent bonds. Interactions between two molecules and allows for dynamic movement. Bond between 2 atoms (between n and o) Donor bond: donates the hydrogen to the bond. Acceptor atom: accepts the hydrogen from the donor bond. Around 0. 3 nm or 3 angtrom: the distance between the h and acceptor must be at least 0. 5 angstrom shorter than the van der waals distance. Van der waals distance= point at which 2 atoms begin repelling each other defined by the radii of the atoms.
