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Energy concentrated in wood

Lecture 8 - Respiration. Dispersed as heat. Dispersed as light. Dispersed as ashes. Energy concentrated in wood. Energy dispersed as heat and light. Stop iiiiiiTT!. Burning. Respiration. glucose. glucose. Energy = heat & light. Energy = heat & ATP.

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Energy concentrated in wood

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  1. Lecture 8 - Respiration Dispersed as heat Dispersed as light Dispersed as ashes Energy concentrated in wood

  2. Energy dispersed as heat and light

  3. Stop iiiiiiTT! Burning Respiration glucose glucose Energy = heat & light Energy = heat & ATP

  4. Metabolism – all chemical reactions in cell Catabolism – breakdown of large to smaller molecules Anabolism – synthesis of larger molecules from smaller molecules

  5. Monomers Anabolism Catabolism Polymer

  6. Cell has a constant need for energy (ATP) From Saunders Publ.

  7. Adenosine triphosphate = ATP A-P~P~P = ATP High energy bond used to do work in cells From Saunders College Publishing

  8. Average adult human produces and utilizes her/his own body weight of ATP per day. Price of ATP from Sigma Chemical Company is $20.00 per gram For 70 kg (131) individual it would cost $1,400,000 to purchase that amount of ATP for one day’s worth of ATP

  9. Cell has 1 second supply of ATP 10,000,000 ATPs used and made per second per cell

  10. Cellular Respiration (Aerobic breakdown of glucose) Glucose, C6H12O6 + O2 CO2 + H2O + 36 (net) ATPs + Heat

  11. Respiration releases energy in chemical bonds in glucose Now what?? Enough energy for 36 ATPs Glucose

  12. A-P~P~P Energy Breaking of the 3rd bond will liberate energy to do work in cells

  13. Review Respiration occurs in the mitochondrion

  14. Oxidation and Reduction Oxidation – chemical reactions that give up electrons Reduction – chemical reactions that accept electrons Oxidation and Reduction A. Oxidation – chemical reactions that give up electrons B. Reduction – chemical reactions that accept electrons

  15. Oxidation and Reduction oxidized Na+ Na (sodium) e- Let me at him Cl (chloride) Cl- reduced

  16. Heat 100oC 80oC 90oC 70oC Review 60oC 50oC

  17. “Hot” 4 H atoms (from glucose) = 4 (+) and 4 (-) 4(-) (-) Electron Transport System = Oxidation and Reduction 4H+ Heat ATP 2H2O “cool” + O24- O2 + 4(-)

  18. Heat 100oC 80oC 90oC 70oC Review 60oC 50oC

  19. Glucose Lactic Acid w/o O2 + O2 In muscles Anaerobic metabolism – 2 ATPs Fermentation in yeast Ethanol and CO2 Aerobic metabolism 36 ATPs

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