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Unformatted text preview: TOPIC 4: CELL CHEMISTRY: ATOMS, MOLECULES, BONDS AND WATER THREE FUNDAMENTAL PROPOSITIONS Living systems obey the laws of chemistry and physics Life is dominated by the chemistry of H, C, O & N Living systems are built from a very restricted group of small carbon-based (organic ) molecules; namely, sugars, fatty acids, amino acids and nucleotides Study pp. 16 - 23; 25 - 29; 61 -66 By the end of BIO 1140 you will be expected to be fully conversant with the material in Chapters 2 & 3. Ignore the fact that you have 'seen' the material previously because now we want to view the material in a different way. The focus of this lecture is to elucidate the most important aspects of the chemistry of cells, and to convince you that you must be thoroughly acquainted with this material if you ever hope to understand cells. In particular, we will look at chemical bonds and water. You will study carbohydrates (CHO) on your own , but we will look at amino acids (AA) and proteins in the next lecture. We will do lipids when we cover membranes. The chemistry of nucleic acids will be and proteins in the next lecture....
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- Winter '07