BIO SCI 98 Lecture Notes - Lecture 1: Cell Nucleus, Calorie, Covalent Bond
17 Jan 2018
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Epinephrine: structural proteins, architecture of cells, water. If keq is greater tha(cid:374) 1, the(cid:374) g^0 is negative. If g^0 is 0, then the reaction is at equilibrium: enthalpy and entropy, h is enthalpy which is the heat given off in a reaction. Oil and water: amphipathic molecules, amphi = 2 sides, pathic = coming together, a molecule with both a hydrophobic region and a hydrophilic region, ex. Base pairing of dna, rna-dna interactions, protein folding: 4 types, 1. Ionic interactions (charge-charge: 40-200 kj/mol, attractive or repulsive, distance dependent, non-directional, 2. Hydrogen bonds: directional fixed length, strongest when the angle is 180degrees, donors: h connected to nofs, acceptor: nof with a lone pair of electrons, 3. Van der waals forces: permanent, transient, or induced dipoles that occur in all molecules, weakest of the weak forces, 0. 4-4 kj/mol, units, calorie = 1 cal = energy required to raise temperature of 1 gm of water by.
