HNRS 1007 Lecture Notes - Lecture 1: Enantiomer, Central Dogma Of Molecular Biology, Hydrophile
Document Summary
Lecture 1&2 (biological molecules: elements to nucleic acids) Trace: ca, p, k, s, na, cl, mg. Ionic compounds= salts >> typically covalent in dry state, strongest of non-covalent bonds when in water. Covalent is 10x to 20x stronger than any non-covalent. Electrostatic must have (+1) and (-1) or greater. Water + salt (partial negative and positive. Asymmetrical electrons--- hot spots of positive/negative charge. Attractions between molecules close together due to hot spots (steric fit0. Think balloon (one side positive, one side negative) Geckos use van der waals interactions to climb walls (molecular connections) Molecules stick together to get away from water. Olive oil dumped in water will clump together to minimize exposure to water. Weirdest bond type--- not attracted to each other, just getting away from water. The enemy of my enemy is my friend . Occurs when molecules of biological structures get extremely close.
