BIOL130 Study Guide - Final Guide: Ionic Bonding, Hydrogen Bond, Sickle-Cell Disease
8 Feb 2014
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Living organisms are complex chemical systems built from inanimate matter: therefore, the chemistry used to sustain life must also obey the same physical principles as non-living matter. 99% of matter found in living organisms are made up of 4 elements: chon carbon, hydrogen, oxygen, and nitrogen, they mostly combine in complex macromolecules present in simple forms (e. g. co2, h2o, etc. ) Has 6 electrons in total; the first 2 go into its first shell and the last. Since carbon has 4 single electrons in its outermost shell, each of those 4 single electrons desires 4 other electrons to form pairs with them, which would otherwise complete the valance shell at 8 electrons. Means k is more readily able to lose its outermost electron in a reaction: elements abundant in organisms have at least one unpaired valance electron in comparison to na.
