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Cellular Respiration in Depth: A Comprehensive Overview of Energy Production in Organisms

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roxy
20 diapositives · 294 Views · Jul 18, 2014

Explore the process of cellular respiration in detail, from glucose breakdown to ATP production, including aerobic and anaerobic pathways. Discover the vital roles of glycolysis, fermentation, Krebs Cycle, and Electron Transport System. Learn how organisms obtain energy and the significance of oxygen. Dive into the world of energy metabolism!

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Cellular Respiration in Depth: A Comprehensive Overview of Energy Production in Organisms
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  1. a look into Cellular Respiration All organisms need a source of energy and a source of Carbon!

  2. What is a heterotroph? An organism that needs to CONSUME something for food/energy

  3. What substance is required for cellular respiration to occur? Glucose

  4. Where does glucose come from? Photosynthesis

  5. Soooo… In order for a heterotroph to obtain energy, plants must undergo photosynthesis, producing glucose for use in cellular respiration. B.T.W. Autotrophs also carry out cellular respiration because ATP cannot be stored

  6. Let’s Look at the Big Picture

  7. What is the equation for Cellular Respiration? • C6H12O6 + 6 O6 → 6 CO2 + 6 H2O + ATP

  8. Cellular respiration produces ATP. What molecule do you think is needed for cellular RESPIRATION to occur? Ummmm…Oxygen?

  9. But WAIT! What if there’s no oxygen present??? Hello. My name is Saccharomycescerevisae! My friends call me Yeast

  10. anaerobic cellular respiration. NO Oxygen is present!

  11. Step 1: Glycolysis- occurs in the cytoplasm of the cell Glyco = sugar Lysis = split Glycolysis =The splitting of Glucose Glycolysis Animation Let’s look at that again!

  12. Step 2: Fermentation ONLY occurs if Oxygen is not present, causing the pyruvates to stay in the cytoplasm and ferment, or rearranges it into…

  13. LACTIC ACID And me! Lactic acid That’s me! And me!

  14. Or Ethyl Alcohol and CO2 Hola! It’s me again…

  15. This is callEDANAEROBIC cellular respiration, or just Fermentation, for short. video

  16. BUT WHAT IF OXYGEN IS PRESENT??? I love Oxygen.

  17. Whoohoo! We get to practice AEROBIC Cellular Respiration! …which is WAY more efficient!... Let’s learn more !!!

  18. Step 1: Glycolysis Remember?

  19. Step 2: The pyruvates enter the mitochondrial matrix, and participate in the Krebs Cycle The function of the Krebs Cycle- to further the breakdown of the products of glycolysis- releasing CO2 and creating ATP. NAD+ and FAD+ are reduced to create NADH and FADH2, these molecules are used during the next stage… http://www.bio.miami.edu/~cmallery/150/makeatp/pyraerobic.jpg

  20. Step 3: The Electron Transport System (a.k.a. Oxidative Phosphorylation) Oxidative Phosphorylation occurs on the inner mitochondrial membrane NADH and FADH2 (from the Krebs Cycle) are oxidized, releasing H+ that are pumped across the membrane and create ATP…and LOTS of it! Let’s see what that looks like! ATP synthase