BIOC 202 Chapter Notes - Chapter 1: Trigonal Planar Molecular Geometry, Ferritin, Bond Length
Document Summary
Biochemistry: study of chemical substances, vital processes occuring in living organisms: ~200 biomolecules per cell, biomolecules: organic, normally present as essential components of living organisms, proteins, carbs, lipids, nucleic acids. Signalling(cytokines, insulin: catalysis-enzymes(alcohol dehydrogenose, defence(antibodies, transport(hemoglobin, movement( actin/myosin) Info storage (genetic info, dna/rna: catalysis(ribozymes, energy transfer (atp, component of cofactors (nad, fad) Atoms + bonding: most biomolecules made of c, n, o, h, p ,s. Fig 1-15 pg 13: not easily reversable (stable, cov interactions bind atoms together to form biomolecules, angstroms. Increase energy, smaller bond length (relative to other interactions) Geometry of c bonding: doubles bonds (trigonal planar) no free rotation, series of atoms locked in plane. Single bonds (tetrahedral) yes free rotation: remaining interactions types are electrostatic, allow molecules to interact w each other/themselves. Interaction of 2 charged atoms based on coulombs law: dna repulsion of p(negatively charged) groups in backbone, helps hold its shape. "double edged sword": need it to dissolve things but interferes w electrostatic interactions.
