Reviewsheet,exam2,Fall2002 - Biology 1320 Review sheet for...

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Biology 1320 Review sheet for Hour Exam 2 Dr. Upchurch Please familiarize yourself with the following areas and concepts. Respiration Respiration: What it is and its purpose in the cell Glucose and oxygen are reactants CO 2 and H 2 O are products Exergonic reaction Opposite of photosynthesis Stepwise process to release energy o Glucose @ top o End w/ CO 2 and H 2 O Is oxidation Know that in the presence of oxygen, respiration breaks down glucose to form carbon dioxide, water, and ATP. Glycolysis, the Krebs cycle, and electron transport: What each one does, what is produced in each phase, where in the cell each one occurs, and how much ATP is produced by each. Glycolosis o Partially breaks down and oxidizes glucose Breakdown of sugar into pyruvate 1 glucose = 2 pyruvate (pyruvic acid) for a 3 carbon molecule o Occurs in the cytoplasm of the cell o Energy used to generate ATP Produces 2 ATP Produces 2 NADH electron carriers Krebs Cycle o Start w/ one compound and end with the same compound o 2 carbon compounds produce 2 CO 2 o Breakdown of pyruvate to CO 2 o Energy is used to generate 2 ATP o 2 electron carriers produced o In the fluid of the mitochondria Electron Transport o Occurs in the inner membrane of the mitochondria o 2 give up electrons to electron acceptor compounds in inner membrane Regenerates Electrical currents in membrane Organized into electron transport chain o Produces H 2 O o Electrons are transferred from reduced electron carriers to electron acceptor compounds o 34 ATP for every glucose molecule o Where cyanide kills you Kills cells by blocking electron transport in the mitochondria Blocks flow of electrons Flow of electrons stops Electron transport blocked No Krebs Cycle leads to all electron carriers reduced Net result is no ATP
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Cell processes cease! You DIE!!! Chemiosmosis: How it works and its significance for the cell. Synthesizes ATP
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This note was uploaded on 04/18/2008 for the course BIO 1320 taught by Professor Farr during the Fall '08 term at Texas State.

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Reviewsheet,exam2,Fall2002 - Biology 1320 Review sheet for...

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