Biology 1202B Lecture Notes - Lecture 4: Cellular Respiration, Citric Acid Cycle, Carbohydrate
25 May 2016
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Document Summary
G3p forms the basic building block for more complex carbohydrate molecules (ch2 o) Carbohydrates exist as monosaccharides or chains of monosaccharides. Most commonly 3, 5 or 6 carbon molecules. Monosaccharides with 5 or more carbons can fold into a ring form. Ring form more common than linear in cells. Used for a number of cellular functions aside from energy storage. C6 h12o6 + 6o2 6co2 + 6h2 o + energy. Catabolic, exergonic pathway which consumes oxygen and produces water. Energy extracted from glucose to a form that the cell can readily use atp. Electrons which are farther from the nucleus contain more energy. Electrons that share c-h bonds are equidistant from both atomic nuclei. Energy release with electrons transferred to oxygen (oxidation) Energy is lost as heat and unavailable to do work. Controlled small steps with low activation energy. Opportunity to transfer food energy to other molecules. Also binds electrons and h+ on nitrogenous base nicotinamide.
