2. Cellular Respiration

3. What happens to food after you eat it? Journal Entry 53 (1/20)

4. How do we turn the Biomolecules in our body into energy?

5. A. Background 1. During a Process called Cellular Respiration glucose is broken down and turned in to energy (ATP) 1. During a Process called Cellular Respiration glucose is broken down and turned in to energy (ATP) Cellular Respiration Intro

6. A. Background 2. Transforms the chemical energy (glucose) into usable energy in the form of (ATP). 2. Transforms the chemical energy (glucose) into usable energy in the form of (ATP). Cellular Respiration Intro ATP

7. A. Background 3. ALL Organisms carryout this process! 3. ALL Organisms carryout this process! Cellular Respiration Intro

8. B. The Equation 6CO 2 + 6H 2 0 + ATP C 6 H 12 O 6 + 6O 2 Notice anything interesting? Glucose + OxygenyieldsCarbon dioxide + water + energy

9. STOP AND THINK What is the purpose of cellular respiration?

10. Cellular Respiration Intro ATP Review!

11. Can store energy (energy empty) Can release energy (is carrying energy) Cellular Respiration Intro NAD+ NADH C. Energy Carriers FAD+ FADH 2

12. STOP and THINK! How are ATP FADH 2 and NADH similar?

13. A. First step of Respiration B. Occurs in the Cytoplasm outside the mitochondria * Means to break glucose Glycolysis 1 st step

14. C. The Process of Glycolysis 1. Requires input of 2 ATP 2. Produces 2 NADH and 4ATP 3. Glucose split into two molecules of Pyruvate (aka Pyruvic Acid) Glycolysis 1 st step 4. How many net molecules of ATP are produced from glycolysis

15. STOP AND THINK What does the Glycolysis stage of cellular respiration accomplish?

16. D. Glycolysis Summary 1. Pros a. Fast b. Requires no oxygen 2. Cons a. Small energy output b. Uses up all the NAD+ 3. Solution a. Send products other places to be processed Glycolysis 1 st step

17. E. Where do the products go? Glycolysis Glycolysis 1 st step Oxygen Aerobic Pathway (a) No Oxygen Anaerobic Pathway (n)

18. A. Main Goal: To slowly release energy from pyruvate in the presences of oxygen. Aerobic Pathway

19. Stop and Think: Why does this process happen slowly Aerobic Pathway

20. 1.FACTS a.Krebs Cycle takesplace in the Mitochondria a.Krebs Cycle takes place in the Mitochondria b.Series of reactions that creates many products Aerobic Pathway: Krebs Cycle (2a)

21. Pyruvate Aerobic: Krebs Cycle ATP Products per pyruvate: Glycolysis 3NADH, 1ATP, 1FADH 2, & 2 CO 2 NETS per glucoses Energy Waste 6NADH, 2ATP, 2FADH 2, & 4 CO 2

22. STOP AND THINK What does the Krebs cycle stage of respiration accomplish?

23. Aerobic: Electron Transport Chain (3a) 1. Facts a. All of the NADH and FADH 2 give their electrons to the ETC to be turned into ATP b. Occurs Across mitochondria membrane

24. Aerobic: Electron Transport Chain a. NADH and FADH 2 drop off energy at the beginning of the chain NADHNAD+

25. Aerobic: Electron Transport Chain b. Oxygen is turned into water O2O2 H2OH2O

26. Aerobic: Electron Transport Chain c. The energy is converted into ATP ADPATP Note: 1 NADH= 3 ATP 1 FADH 2 = 2 ATP

27. STOP AND THINK What does the ETC Stage of Cellular Respiration accomplish?

28. PhotosynthesisRespiration Energy Transformation Function Location Organisms Reactants (starting materials) Products Equation

29. Comparison of Photosynthesis and Respiration

30. Aerobic respiration totals