ANTH 210 Lecture Notes - Lecture 20: G1 Phase, Myc, Chromatin
10 Aug 2018
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Document Summary
Supply of oxygen and nutrients (sugars) in blood. Chemical products are the same as burning: co2 and h2o. Controlled oxidation by enzymatic steps allows energy to be stores. Release chemical energy from the sugar molecule. Cannot be released by the cell because it is being release too quickly and thus we use glycolysis which is a stepwise method to harvest energy from sugar molecules. Aldehyde is in equilibrium with the ring form of the sugar. 6-carbon chain with aldehyde at the end. Ring form is slightly favoured over linear molecule. 2nd carbon is a ketone instead of an aldehyde. Glucose: 6 carbon sugar gets activated by phosphorylation and is converted to fructose. Fructose is converted to two 3 carbon high energy intermediates which eventually become glyceraldehyde 3-phosphate. Glucose gets phosphorylated and you end up with glucose 6-phosphate. The negative charge keeps sugar in the cytosol trapping it inside the cell.
