BIO 202 Study Guide - Midterm Guide: Ribosome-Inactivating Protein, Chemical Bond, Nucleoside Triphosphate
28 Aug 2016
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Document Summary
Trace elements-required by organism only in minute quantities. An element"s properties depend on the structure of its atoms. Amu=average atomic masses of all of an elements natural occurring isotopes. Electrons are only subatomic particles directly involved in the reactions between atoms. 90% of time elements is in orbital = (components of electron shell) The formation and function of molecules depend on chemical bonding between atoms: strongest chemical bonds are covalent and ionic. Bonding capacity= # od unpaired electrons required to complete the valence shell. Oxygen is more electronegative than hydrogen therefore it attracts more electrons. Van der waals-very weak-happens when atoms and molecules are very close to each other. Weak bonding: ionic, van der waals, hydrogen bonding-weak electrostatic interaction-covalently linked, part of large molecules such as protein, reinforce 3d effects of bonds. Shapes are determined by positon of an atoms orbitals.
