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Cellular Respiration

Cellular Respiration. ‘In a Nutshell’. CELLULAR RESPIRATION. 1. Converts glucose into ATP energy. Overview of Respiration. All organisms respire! ATP is synthesized & the energy will be used for cellular processes: active transport, making proteins, etc… Two Types:

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Cellular Respiration

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  1. Cellular Respiration ‘In a Nutshell’

  2. CELLULAR RESPIRATION 1. ConvertsglucoseintoATP energy.

  3. Overview of Respiration • All organisms respire! • ATP is synthesized & the energy will be used for cellular processes: active transport, making proteins, etc… Two Types: -Aerobic (oxygen is present). Occurs in mitochondria -Anaerobic (oxygen is not present)

  4. CELLULAR RESPIRATION Cellular respiration equation C6H12O6 + 6O2  6CO2 + 6H2O + ATP Energy Glucose + oxygen  carbon dioxide + water + ATP energy

  5. STEPS of RESPIRATION 1.Glycolysis - anaerobic 2. Krebs cycle- aerobic 3. Electron Transport Chain (ETC) - aerobic

  6. Step 1: GLYCOLYSIS • Glucose is Broken Down (oxidized) to 2 pyruvates. • Occurs in the CYTOPLASM • ANAEROBIC! All organisms undergo glycolysis • Produces 2 ATP and 2 pyruvate. 2 NADH carry electrons to Electron Transport Chain

  7. Step 2: KREB’S CYCLE (CITRIC ACID CYLE) • Occurs in the mitochondria: IT’SAEROBIC! • Both Pyruvates go in • 2 ATP and 6 CO2 come out • 6 NADH and 2 FADH2 carry electrons to the ETC

  8. Step 3: ELECTRON TRANSPORT CHAIN • Occurs in the mitochondria: it’sAEROBIC! • Produces 32 ATP using the electrons provided by Glycolysis AND the Krebs Cycle & carried by NADH & FADH2 36 total ATP molecules are produced during cellular respiration from one glucose molecule! 2 ATP- Glycolysis; 2 ATP- Kreb’s; 32 ATP-ETC

  9. If there’s NO OXYGEN, respiration is ANAEROBIC. After glycolysis, there’sFERMENTATION!!!Only the 2 ATP from glycolysis are produced. No more from Fermentation!The 2 pyruvic acid (pyruvate) molecules from Glycolysis go through fermentation. 2 kinds of fermentation:Lactic acid fermentation: pyruvic acid -> lactic acidoccurs in animals; ex.: muscle “pain” from too much exercise, yogurtAlcoholic fermentation: pyruvic acid -> ethyl alcoholoccurs in yeast and some bacteria; ex.: alcoholic beverages, bread

  10. How photosynthesis & respiration relate. • Almost opposite processes • Photosynthesis produce food (store) • Respiration breaks down food (releases) • Photosynthesis uses CO2 and releases O2 • Respiration releases CO2 and uses O2

  11. Maybe an Amoeba Sisters Video Will Help • http://www.youtube.com/watch?v=4Eo7JtRA7lg&list=UUb2GCoLSBXjmI_Qj1vk-44g

  12. The formula CO2 + H2O --- C6H12O6 + O2 is the formula for ? a. photosynthesis b. respiration • ___ is the process which breaks down food molecules to release energy and takes place in the mitochondria. • a. photosynthesis b. digestion c. aerobic respiration • ___ is formed when ATP releases a phosphate. • a. ADP b. AMP c. APP • Fermentation is a form of ___ respiration which occurs without the presence of oxygen. • a. aerobic b. anaerobic c. antioxidant • The green pigment which is present in plant cells and allows them to go through photosynthesis is ___. • a. chlorophyll b. chloroplast c. chlorosis Quiz 4

  13. Cellular Respiration 2 36

  14. Where does Glycolysis take place? Glycolysis

  15. What organisms do Glycolysis?

  16. What is step 2 of cellular respiration? Glycolysis

  17. Where does the Krebs Cycle take place? Glycolysis

  18. What does the Krebs Cycle Make?

  19. What does the ETC Use?

  20. What does the ETC Make?

  21. Cellular Energy Chapter 8 8.3 Formative Questions What is the overall purpose of cellular respiration? to make ATP to process H2O to store glucose to deliver oxygen

  22. TCA cycle chemiosmosis glycolysis Cellular Energy glycolysis Krebs cycle electron transport electron absorption catalysis aerobic pathway anaerobic pathway phosphorylation fermentation Chapter 8 8.3 Formative Questions Which represents the general sequence of cellular respiration?

  23. Cellular Energy Chapter 8 8.3 Formative Questions Which stage of cellular respiration is the anaerobic process? glycolysis Krebs cycle electron transport

  24. Cellular Energy Chapter 8 8.3 Formative Questions Which molecule generated by the Krebs cycle is a waste product? CoA CO2 FADH2 NADH

  25. Cellular Energy an excess of glucose an increased demand for ATP Chapter 8 Standardized Test Practice What prevents pyruvate from entering the Krebs cycle and instead results in this pathway? a buildup of CO2 a lack of oxygen

  26. http://www.bing.com/videos/search?q=crash%20course%20biology%20cellular%20respiration&FORM=VIRE15&adlt=strict#view=detail&mid=B5DFEEAB51E26C45DC44B5DFEEAB51E26C45DC44http://www.bing.com/videos/search?q=crash%20course%20biology%20cellular%20respiration&FORM=VIRE15&adlt=strict#view=detail&mid=B5DFEEAB51E26C45DC44B5DFEEAB51E26C45DC44

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