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Cellular Respiration

Learn about the process of cellular respiration, including glycolysis, aerobic respiration, anaerobic respiration, and the Krebs cycle. Discover how organisms release stored energy from food and the role of the mitochondria.

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Cellular Respiration

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  1. Cellular Respiration Harvesting the stored energy from food!

  2. Glycolysis • Glycolysis does not need oxygen as part of any of its chemical reactions.It serves as a first step in a variety of both aerobic and anaerobic energy-harvesting reactions. • Glycolysis happens in the cytoplasm of cells, not in some specialized organelle. • Glycolysis is the one metabolic pathway found in all living organisms.

  3. Break Glucose ATP USED ATP Created ATP Created New Products to either go through aerobic respiration or anaerobic respiration

  4. Aerobic Respirationusing oxygen to release stored energy

  5. MitochondriaPowerhouse of the cell

  6. Overall Equation • Chemical equation • C6H12O6 + 6 O2 6 H2O + 6 CO2 & (energy) • Word equation • Glucose + oxygen water + carbon dioxide & energy

  7. Exercise Lab

  8. Krebs Cycle~additional 2 ATP • The Krebs cycle occurs in the mitochondrial matrix and generates a pool of chemical energy molecules (ATP, NADH, and FADH2) from the oxidation of pyruvic acid, the end product of glycolysis.

  9. Electron Transport Chain~34 additional ATP • The electron transport chain (ETC) consists of a series of proteins, embedded in the inner mitochondrial membrane -cristae.

  10. Anaerobic RespirationA.K.A fermentation • Two different types of fermentation • Lactic acid No Co2 produced • Alcoholic Co2 produced **Both types produce 2 additional ATP molecules

  11. Anaerobic continued… • Happens directly in the cytoplasm of the cell. • Humans ferment lactic acid in muscles where oxygen becomes depleted. This lactic acid causes the muscle stiffness & cramps you feel after beginning exercise programs.

  12. Capturing energy from the sun & releasing the energy from the sun & energy

  13. Similarities • Respiration and Photosynthesis both have an electron transport chain and a cycle. (Calvin or Krebs) • Both synthesize ATP molecules with an ATP synthase.  • Both produces each other's needed reactants. • Every single living organismundergoes Respiration.

  14. Quiz Time Using your clickers, answer the following questions! Remember to hit send!!

  15. Question 1 • True or False: Cellular respiration is a chemical process that releases the stored energy in food.

  16. Question 2 • True or False: Glycolysis is a process that happens only in the mitochondria.

  17. Question 3 • Glycolysis produces all of the following EXCEPT: a. ATP b. pyruvic acid c. NADH d. NADPH

  18. Question 4 • Glycolysis happens all of the following EXCEPT: a. plants b. animals c. bacteria d. fungus e. protista e. none of the above

  19. Question 5 • The presence of oxygen allows pyruvic acid to enter into: a. the mitochondria b. the chloroplast c. the golgi apparatus d. the nucleus

  20. Question 6 • The Krebs cycle produces all of the following EXCEPT: a. ATP b. FADH2 c. NADH d. glucose

  21. Question 7 • The respiration electron transport chain is found in the ________ and it gets the electrons from _______: a. matrix, ATP & NADPH b. cristae, FADH2 & NADH c. thylakoid, NADH & ATP d. none of the above

  22. Question 8 • Fermentation occurs in the ___________ and there are ____ main types. a. mitochondria, 2 b. chloroplast, 3 c. cytoplasm, 2 d. mitochondria, 1

  23. Question 9 • True or False: Muscle soreness and cramps are caused by alcoholic fermentation.

  24. Question 10 • Aerobic respiration & photosynthesis share all of the following EXCEPT: • both have an electron transport chain and a cycle. b. both synthesize ATP molecules with ATP synthase.  c. both produces each other's needed reactants. d. every single living organism undergoes both processes.

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