CH 8 student_outline

CH 8 student_outline - How Cells Release Stored Energy...

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How Cells Release Stored Energy Chapter 8
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Photosynthesizers get energy from the sun Animals get energy 2 nd or 3 rd hand from plants or other organisms Regardless, the energy is converted to the chemical bond energy of ATP ATP Is Universal Energy Source
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Making ATP Plants make ATP during photosynthesis Cells of all organisms make ATP by breaking down carbohydrates, fats, and protein
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Main Types of Energy-Releasing Pathways Aerobic pathways Evolved later Require oxygen Start with glycolysis in cytoplasm Completed in mitochondria Anaerobic pathways Evolved first Don’t require oxygen Start with glcolysis in cytoplasm Completed in cytoplasm
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Summary Equation for Aerobic Respiration C6H12O6 6O2 H2O 6CO2
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Overview of Aerobic Respiration Glycolysis Electron Transfer Phosphorylation Krebs Cycle ATP ATP 2 CO 2 4 CO 2 2 32 water 2 NADH 8 NADH 2 FADH 2 2 NADH 2 pyruvate e - + H + e - + oxygen (2 ATP net) glucose Typical Energy Yield: 36 ATP e - e - + H + e - + H + ATP H + e - + H + ATP 2 4 * * *
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O 2 H 2 O electron carriers Electron transport chain 4 CO 2 C Krebs cycle 2 CO 2 C C 2 acetyl CoA C C C C C C C glucose Glycolysis (cytoplasm) C C C 2 pyruvate 2 ATP 32 or 34 ATP ATP 2 Fermentation Cellular respiration ethanol CO 2 2 C C + C 2 C C C lactate or 2 (mitochondrion) intermembrane compartment
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Overview of Aerobic Respiration
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The Role of Coenzymes Small molecules associated with an enzyme that participates in enzymatic catalysis NAD+, FAD, NADH, FADH2 are examples
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CH 8 student_outline - How Cells Release Stored Energy...

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