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Trophic Levels

Trophic Levels

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Trophic Levels

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  1. Trophic Levels • Sun • Autotrophs or Producers • Heterotrophs or Consumers • Herbivores • Carnivores • Omnivores • Decomposers

  2. Food Chain sun Heterotroph Heterotroph Decomposer

  3. Energy In Cells Chapters 8 & 9

  4. Cell Energy 1. All organisms must use energy 2. All activities in the body use energy. 3. ATP molecules are what a cell uses for energy. ATP stands for: adenosine triphosphate

  5. B. Storing energy in ATP 1. ADP- adenosine diphosphate (A-P-P) 2. ATP- adenosine triphosphate (A-P-P-P) ATP Cycle- Process of making ATP using glucose, then using the ATP to power other activities. Show dvd 8

  6. TMBG song

  7. C. Trapping Energy From Sunlight 1. Chloroplast

  8. 2. Photosynthesis- 6 CO2 + 6 H20 --- C6H12O6 + 6 O2 (glucose)

  9. A. Light-dependent Reaction 1. occurs in the thylakoid membranes 2. energy splits water and releases O2 B. Light – Independent Reaction (Calvin Cycle) 1. Occurs in the stroma 2. Leftover H combines with CO2 to makeC6H12O6 3. Light is not needed

  10. Optional Homework • P. 203: 1-5 • P. 207: 2,3,4 • P. 214: 1,3,5

  11. D. Cellular Respiration • Facts • Happens in ALL living things • Plants carry out both photosynthesis and respiration. All others, just respiration • Respiration is the reactions that organisms use to make ATP • Happens in the mitochondria

  12. Process of Cellular Respiration • Glycolysis- • Happens in the cytoplasm • Glucose is broken down into 2 pyruvic acid molecules

  13. Krebs Cycle – • Happens in the mitochondria • Pyruvic acid is broken down with O2. • Energy, CO2 and H2O are released

  14. OVERALL REACTIONS PHOTOSYNTHESIS: 6 CO2 + 6 H20 + energy  C6H12O6 + 6 O2 (glucose) CELLULAR RESPIRATION: C6H12O6 + 6O2  6CO2 + 6H2O + 36 ATP

  15. Cell Respiration 1

  16. Comparing Fermentation and Cellular Respiration Fermentation Cellular Respiration Nets 2 ATP Nets 38 ATP Alcohol or Lactic acid CO2 and H2O are the results are the results No Oxygen Oxygen required

  17. Optional HW • P. 225: 1-3 • P. 232: 1, 2, 5, 6