humanenergeticsiii

humanenergeticsiii - Accessing or producing ATP to fuel...

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Accessing or producing ATP to fuel cellular work OVERALL GOAL: describe the basic ATP producing biochemical pathways in general terms. Emphasis on the process/results i.e.,“big picture”. Memorization of specific intermediates, chemical structures, and enzymes involved (with some noted exceptions) NOT REQUIRED. Phosphagen system Electron Transport Chain (ETC) Anaerobic (and aerobic) glycolysis TCA cycle, KREBS cycle, Citric acid cycle
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Oxidative Metabolism Protein Glycolysis aa 6C sugars 6C sugars 3C GADP TCA cycle 3C pyruvate Electron Transport Chain Oxidative Phosphorylation e - O 2 HO 2 ATP ATP NADH + Acetyl CoA NADH FADH2 Glycerol FA Fats Carbohydrates CO 2 (electron carriers) NAD+ FAD
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The phosphagen system (immediate energy) ATP itself . Splitting of ATP by ATPase enzymes in a hydrolysis reaction. Creatine phosphate Cr-P Cr-P provides a reserve of phosphate energy to regenerate ATP. Exists at 5-6 x concentration as ATP Catalyzed by enzyme creatine kinase . Adenylate kinase (enzyme) Regenerates 1 ATP from 2 ADP molecules. The phosphagen system: represents short term energy reserves for high power output activities (like sprinting). The reserves rapidly deplete and sustain maximal power activities for only 6-10 seconds.
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Phosphagen system: Immediate source of energy A quick means of resynthesizing ATP PCR + ADP + H + >>>>ATP + creatine PAR + ADP + H + >>>> ATP + arginine White muscle typically has high levels of phosphagens-good for ‘burst’ energy
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What is power? How does power differ from work?
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humanenergeticsiii - Accessing or producing ATP to fuel...

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