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Chapter 7 - Chapter 7 metabolism of Glucose CHO Glucose one...

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Chapter 7 - metabolism of Glucose: C H O ₁₂ Glucose - one of the most energy efficient molecules. Cells will obtain energy from glucose by going through a series of oxidative reactions. Glucose yields: water, carbon dioxide, & energy when broken down. (H O & CO & energy). Three metabolic pathways used: Glycolysis- occurs with or without oxygen- anaerobic. Break down glucose- first thing is glycolysis-convert glucose (6 C) to pyruvate (2-3 C). Will produce very little usable energy. After Glycolysis is completed you can go to fermentation. Depending on if oxygen is present or not. Fermentation- anaerobic. Not O , have 3-carbon pyruvates which will become ethanol (yeast or alcohol) or lactic acid (mammals). Still produce energy but not very sufficient. Cellular Respiration- requires oxygen- aerobic. Pyruvate will be converted to water and carbon dioxide. You will get the most possible energy (most sufficient for breaking down glucose). Work through metabolic Pathways- Redox Reactions- used to break down glucose, these: transfer energy between electrons. Reduction- gain of one or more electrons or hydrogen atom. One molecule is reduced and another is oxidated. Oxidation Reaction- a loss of electrons or hydrogen atom. Oxidizing/reducing agents: Oxidizing agent- accept electron or hydrogen- causes something else to be reduced.
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