1. Cellular Respiration Energy From Food

2. What is Cellular Respiration ? Conversion of food/glucose into Energy (ATP) with oxygen present AEROBIC process= oxygen required Occurs in the mitochondria.

4. Tell your shoulder partner what the reactants and products are based on the pictures? What do you guess is the goal?

5. What’s the Equation? Chemical Equation: 6O 2 + C 6 H 12 O 6  6CO 2 + 6H 2 0 + ATP Energy Word Form: Oxygen + Sugar  Carbon dioxide + Water+ Energy (ATP) Reactants: –sugar (glucose) and oxygen. Products: –Carbon dioxide, water, and energy (ATP).

6. Where does it Take Place? -Mitochondria -3 separate reactions occur: Glycolysis, Krebs Cycle, Electron transport chain

7. What is Glycolysis? (Glucose Breaking) 1st step occurs in cytoplasm and is anaerobic Makes 2 molecules of ATP Glucose is starting molecule Glucose -- 

8. What type of Energy? ATP- Adenosine Triphosphates-stored energy for the cell. Importance: Quick energy- Runners- ATP for a few seconds of intense activity (about 90 seconds) Long term energy: Cellular respiration is the only way to generate a continuing supply of ATP

9. Review- Summarize what you know about cellular respiration so far.cellular respiration What are the main products of glycolysis? What is the molecule that gets it all started? How much ATP is made in glycolysis?

11. Review-Appointment Clock Explain the role of organic (carbon based) compounds in CR. (p.131,132) For each 6 carbon molecule ( C 6 H 12 O 6 ), how many molecules are used and how many are produced? (p. 132,133)

12. **Use following questions for card review List the 3 steps of CR in order Why is CR called aerobic Where does CR take place? Why is ATP so important Where does glycolysis occur? What does anaerobic mean?

13. What is the Krebs Cycle? 2 nd reaction of cellular respiration is aerobic/in mitochondria Makes CO2(waste product) Makes 2 moleules of ATP

14. What’s the Electron Transport Chain? 3 rd stage of cellular respiration is aerobic/in mitochondria Occurs in the cristae (folded membranes of mitochondria) Uses the high-energy electrons from Krebs to convert ADP to ATP. Total ATP 32. Produces Water as waste product

15. The Totals (ATP) Glycolysis=2 ATP Krebs Cycle=2 ATP Electron Transport=32 ATP TOTAL= 36 ATP from 1 glucose molecule

16. Why Glucose into ATP? It’s used to fuel/power cell activities 1.) ATP releases energy in a controlled way compared to glucose(think controlled fire vs explosion) 2.) ATP=immediate energy, glucose takes time

17. Mr. Aragon For Being Awesome

18. ATP = Adenosine Triphosphate = A—P—P—P high energy bonds When a cell needs energy, high energy bonds are broken by an enzyme. + P A—P—P—P A—P—P (ATP) (ADP) energy

20. Partially charged

21. Comparing Photosynthesis and Cellular Respiration On a global level, photosynthesis and cellular respiration are also opposites. –Photosynthesis removes carbon dioxide from the atmosphere and cellular respiration puts it back. –Photosynthesis releases oxygen into the atmosphere and cellular respiration uses that oxygen to release energy from food.

23. THE BIG PICTURE Glucose &

24. Anaerobic vs. aerobic Anaerobic means without oxygen (glycolysis) Produces little ATP It is how our body makes most of the energy at the start of exercise Aerobic means with oxygen (Krebs cycle and ETC) Produces 20 times more ATP than glycolysis alone Body relies on it during physical activities

25. Comparing Photosynthesis and Cellular Respiration Convert h2o,light,co2 to sugars Chloroplast CO 2, H 2 0 and Light Energy C 6 H 12 O 6 and O 2 6CO 2 + 6H 2 0 + Energy  6O 2 + C 6 H 12 O 6 Plants, algae, and some bacteria Convert food/glucose to ATP Mitochondria C 6 H 12 O 6 and O 2 CO 2,H 2 0, and Energy (ATP) 6O 2 +C 6 H 12 O 6  6CO 2 + 6H 2 0 + Energy All Eukaryotes. Definition: Location: Reactants: Produces: Equation: Which organelle:

27. LACTIC ACID FERMENTATION

28. Cellular Respiration Fermentation in the Absence of Oxygen Fermentation When oxygen is not present, fermentation follows glycolysis, regenerating NAD + needed for glycolysis to continue. Lactic Acid Fermentation -pyruvic acid is converted to lactic acid in muscle cells, instead of carbon dioxide and water. =soreness

29. Cellular Respiration without Oxygen Fermentation- releases energy from food molecules by producing ATP without oxygen. –Lactic Acid- muscles produce this during rapid exercise.

30. Normal Cellular Respiration

31. Lactic Acid Pyruvic Acid Lactic Acid Fermentation- Occurs in cytoplasm (anaerobic-no oxygen) and creates lactic instead of CO2 and H2O.

32. Lactic Acid Pyruvic Acid