Cellular Respiration

Cellular Respiration - Brittani Richter Assignment 5...

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Brittani Richter Assignment 5 Cellular Respiration Glycolysis is the first step in Cellular Respiration. It is broken down into different parts. First is glucose being primed with 2 ATPs converting it into fructose 1,6- bisphosphate. That is split into two separate chemical compounds glyceraldehydes 3-phosphate. The final product is 2 ATPs and 2 NADHs and two pyruvate molecules. The pyruvate molecules go on into the next stages of cellular respiration. They are oxidized to acetyl group and each acetyl group is paired with coenzyme A. Products from this step include 2 carbon dioxides, 2 acetyl CoA, and 2 NADHs. The next stage is the Krebs cycle where there are 2 stages with 9 reactions. Major key intermediate is formation of Citrate from acetyl CoA and oxaloacetate. CoA is not used up or altered so it can be recycled. H+ are transferred using REDOX reaction and it forms 3 NADHs and 2 FADH2s with every acetyl group. So final products are 4 carbon dioxide, 6 NADH, 2FADH2, 2 ATPs and 2 oxaloacetate. The next stage is the electron transport chain. This is where you remove H+ from NADH and FADH2 to harvest energy as they are passed along. The energy is what allows the pump to pump out H+ against the concentration gradient. H+ will not move back into the cell even along the gradient because the bilayer prevents charged molecules from moving across. However, ATP synthase allows them to move back into the cell and recover and produce ATP via oxidative phosphorylation. Chemiosmosis is the use of H+ gradient to produce energy(ATP) and oxygen and water. Final products include 26 ATP and 6H2O. Total products from the entire respirations cycle is 30 ATPs, 6 CO2, 12 H+, 6 H2Os for every glucose molecule.
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Brittani Richter Assignment 5 Chapter 9 Study Guide Metabolism- all the chemical reactions in an organism Anabolism- synthesis reaction that produces large molecules from small pairs, many use ATP. Catabolism- decomposition reaction that breaks down molecules and produces ATP
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This note was uploaded on 07/17/2011 for the course BIOL 1401 taught by Professor Holaday during the Spring '08 term at Texas Tech.

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Cellular Respiration - Brittani Richter Assignment 5...

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