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Energy, Where does it come from?

Energy, Where does it come from?. Bio. i. On page 46 of your notebook divide it into top & bottom. Label top half of page 46: Where does energy come from? List all the ways you can think of on how we get energy. Any forms of energy you can think of. Class Discussion.

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Energy, Where does it come from?

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  1. Energy, Where does it come from? Bio. i

  2. On page 46 of your notebook divide it into top & bottom • Label top half of page 46: Where does energy come from? • List all the ways you can think of on how we get energy. Any forms of energy you can think of.

  3. Class Discussion • What ways do we get energy? Share your ideas

  4. How do our cells get energy? • Our cells get energy from Cellular Respiration and from Photosynthesis. • Plants use sunlight to perform photosynthesis to make glucose. Glucose is then used by the cell & mitochondria to make ATP. • ATP is how all of our cells are powered. • ATP stands for Adenosine Triphosphate

  5. Label the ATP Cycle on the bottom half of page 46 of your notebook 1) ATP is ready to release energy 4) ADP + a phosphate creates ATP - Ready to start all over again 2) The BOND between the 3rd & 2nd phosphate is broken, releasing ENERGY 3) ADP is a weaker form of energy, ready to have a phosphate added to it

  6. Photosynthesis • Class discussion • What occurs during photosynthesis? What is the chemical formula for photosynthesis?

  7. Sorting Activity page 47 of Notebook • Cut out each piece and arrange to show the process of photosynthesis

  8. Your page should look something like this

  9. Photosynthesis Notes Complete the handout as we go through the notes and glue it on page 48 of your notebook

  10. Which Organisms Carry Out Photosynthesis? • Autotrophs such as plants and some protists

  11. Photosynthesis • Photosynthesis is the cellular process in which autotrophs capture light energy and convert it to chemical energy (glucose) using carbon dioxide and water.

  12. Equation for Photosynthesis • 6CO2 + 6H2O + Light Energy  C6H12O6 + 6O2 • Carbon Dioxide + Water + Light Energy  Glucose (sugar) + Oxygen

  13. Reactants & Productsof Photosynthesis

  14. Where Does Photosynthesis Occur? • Chloroplasts • Contain chlorophyll in plant cells or autotrophs that capture different wave lengths of light

  15. Light Dependent Reaction(Needs sunlight to happen) • Occurs in the thylakoid • Water is absorbed through roots. • Sunlight enters the chloroplast heating up the water to where it splits, Hydrogen is saved and oxygen is released back into the atmosphere • NADP+ picks up the H+ ions (becoming NADPH) and moves them to the stroma for the light independent reaction (Calvin cycle). (NADP+ is a delivery man of hydrogen, its only job is to transfer H+ to the next reaction)

  16. Light Dependent Reaction Thylakoid

  17. Light Independent Reaction –Calvin Cycle (does NOT need sunlight to happen) • Carbon dioxide from the atmosphere enters • H+ breaks off from NADPH (NADP+ is a delivery man of hydrogen) • NADP+ returns to the Light Dependent Reaction to gather more H+ • Carbon dioxide (CO2) becomes “fixed” with the H+ producing the glucose molecule C6H12O6.

  18. Light Dependent / Calvin Cycle

  19. Summarize photosynthesis • Class discussion

  20. What do we do with the glucose/starch when we eat plants?? • Class discussion

  21. Mitochondria & Cellular Respiration

  22. Mitochondria & Cellular Respiration Found in Both Plants & Animals

  23. Mitochondria & Cellular Respiration Found in Both Plants & Animals Breaks down GLUCOSE into ENERGY

  24. Mitochondria & Cellular Respiration Found in Both Plants & Animals Chemical formula is the same as photosynthesis but in reverse Breaks down GLUCOSE into ENERGY

  25. Cellular Respiration

  26. Cellular Respiration Foldable Create a pyramid foldable this will go on page 49 Use the foldable to complete your notes

  27. Glycolysis • Happens in the cytoplasm (cytosol) of the cell • We put in 2 ATP to start the process • We make 4 ATP and break the glucose down into 2 molecules of pyruvate Since we paid 2 ATP up front to start the process we only Gained 2 ATP • From glycolysis we get • 2 ATP • 2 pyruvate • 2 NADH (goes to ETC) Pyruvate now travels to the mitochondria

  28. The Krebs Cycle / Citric Acid Cycle • Occurs inside the mitochondria • Is an aerobic process, NEEDS OXYGEN to work • Breaks down the pyruvate into acetyl-CoA • Net yield of 2 ATP • Net yield of 6 NAHD & 2 FADH2 (this will help run the next process) • Releases Carbon dioxide as waste

  29. Electron Transport Chain • Final stage of Cellular Respiration • Takes place in the mitochondria • Electrons are released from NADH & FADH2 as they pass through the inner mitochondrial membrane, as they go through electrons give up energy to create 28-32 ATP • Hydrogen is also combined with Oxygen to form water

  30. Net Yield of each process

  31. Page 50 • Fill out the Photosynthesis Cellular Respiration Chart

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