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CELLULAR RESPIRATION

CELLULAR RESPIRATION. 1. Cellular Respiration. Process that releases energy by breaking down glucose and other food molecules in the presence of oxygen. 2. What is a calorie?. The amount of energy needed to raise the temperature of 1 gram of water 1 degree Celsius.

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CELLULAR RESPIRATION

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  1. CELLULAR RESPIRATION

  2. 1. Cellular Respiration Process that releases energy by breaking down glucose and other food molecules in the presence of oxygen.

  3. 2. What is a calorie? The amount of energy needed to raise the temperature of 1 gram of water 1 degree Celsius. How many calories do you think are here?

  4. 3. The capital letter “C” is used to measure calories in food. What does the “C” mean? Kilocalorie = 1,000 calories Which of these do you think has more calories (C)?

  5. 4. How many calories does 1 gram of glucose have? How many food calories (C) is that? 3811 calories of heat energy 3.81 C (3811/1000) Glucose Molecule

  6. 5. How many calories (C) are in 1 gram of each of the following? FAT = CARBOHYDRATE = PROTEIN = 9 4 4

  7. 6. What are the three processes that make up cellular respiration in the cell? Glycolysis The Krebs Cycle The Electron Transport Chain

  8. 7. What is the process called where cells release energy from glucose and other food compounds? Glycolysis Glyco = sugar lysis = breaking To break down sugar

  9. Glucose

  10. 8. Where in the plant cell does glycolysis take place? In the Cytoplasm

  11. 9. Where in the plant cell does the Krebs Cycle and Electron Transport take place? In the Mitochondria

  12. 10. What is the chemical equation for respiration?

  13. 11. The cell uses three steps during respiration (#6) to convert glucose into ATP. Why? To prevent too much energy from being released all at once the cell traps the energy in the form of ATP so the energy can be used a little at a time.

  14. 12. Glycolysis Process where one molecule of glucose is broken in half and 2 molecules of pyruvic acid are produced. Uses up 2 molecules of ATP. Produces 4 molecules of ATP. (gain of 2 ATP molecules) Does not require oxygen.

  15. 13. Aerobic Requires oxygen

  16. 14. Krebs Cycle Second stage of cellular respiration. Pyruvic acid is broken down in to carbon dioxide. High energy electrons are transferred to energy carriers, they are used to produce ATP.

  17. 15. Electron Transport The electron transport chain uses the electrons produced in the Krebs Cycle to covert ADP into ATP.

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