BIOL 1105- Final Exam Guide - Comprehensive Notes for the exam ( 81 pages long!)
30 Nov 2017
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Document Summary
Constant source of energy results in complexity. Concluded that characteristics varied in different places. Those with advantageous traits are more likely to survive and reproduce. Necessary for the synthesis of cellular components. Array of chemicals that self-assemble into larger molecules. Cannot be converted to other substances or broken into simpler elements. Combination of two or more atoms of the same or different atoms. Each shell contains a characteristic number of elections. Each shell has a higher number than the previous. Electron shells follow the octet rule (rule of 8) Valence shells that are not full form reactive atoms. Most reactive are those in the 1st and 7th column. Electron is donated from one atom to another. Like the poles of a magnet, the opposite charges attract and the 2 ions are held together by electrostatic interaction. In some reactive elements, electrons are shared between atomic nuclei. The electrons spend time orbiting both nuclei.
