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Introduction to Cellular Respiration
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Warm Up Get a computer and complete Reading Comp 8 15 minutes
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Agenda Intro to Cellular Respiration Go over final exam
Homework: Cellular Respiration Packet
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Cellular Respiration
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Cellular Respiration The Basic Equation
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Three Steps in Cellular Respiration
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1 3 2
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Glycolysis in cytocol fluid space in which the organelles reside
Citric Acid Cycle Matrix (inner membrane) of Mitochondria ETC inner membrane
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Step 1: Glycolysis
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Glycolysis Glucose (6C) broken down into pyruvate (3C)
glyco=sugar, lysis=splitting Free energy transferred to energy carrier molecules Inputs: Glucose, ATP Outputs: NADH, ATP, Pyruvate
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Step 2: Citric Acid Cycle/Krebs Cycle
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Krebs/Citric Acid Cycle
Cyclical series of chemical reactions Free energy transferred to energy carriers through coupled redox reactions Inputs: Pyruvate/Acetyl-CoA Outputs: GTP/ATP, NADH, FADH2, CO2
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Focus on two things: Roll of pyruvate Step 4: isocitrate to alpha cetoglutarate (energetically favorable/exothermic/spontaneous) coupled with NAD+ to NADH (uphill reaction).
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Step 3: ETC
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Electron Transport Chain
Proton gradient generated by electron transport powers production of ATP Similar to ETC in photosynthesis Inputs: NADH, FADH2 (sources of electrons) Oxygen Outputs: Water, ATP
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O2 is the last electron acceptor make a lot of energy
Process is called oxidative phosphorylation
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Repetitions Go back to your paper graphic organizer and add information to it from the lecture Five minutes
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Video
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Final Assessment After we go over the assessment put both parts into your file folder
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Homework Time to work on Packet
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