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Photosynthesis Notes PPT
- 1. Photosynthesis Harnessing the powerof LIGHT to CREATE food!
- 2. By the endof this unit, you will be able to… Explain why plants are green. Identify where photosynthesis takes place. Identify the structures of a chloroplast. Write the chemical equation of photosynthesis. Explain how glucose is made. Compare and contrast the light dependent and independent reactions
- 3. Essential Question: Whatis the process of photosynthesis and where does it take place? Objective: I can identify where photosynthesis takes place, write the chemical equation for photosynthesis, and explain why plants are green.
- 4. Let’s start thisoff with some MUSIC! https://www.youtube.com/watch?v=8u_hwwztRqI
- 5. Photosynthesis- LIGHT Whitelight from the sun is a blend of many different wavelengths (colors) of light. An object is a certain color because it RELFECTS a certain portion of the light and absorbs the rest.
- 6. • A leafis green because it reflects green light.
- 7. Photosynthesis- Producers Producersare organisms that make their own energy. They do not eat. Producers are autotrophs, meaning they make their own food. Photosynthesis is a process that producers use to store light energy as chemical energy (usually in the form of sugars)
- 8. Chemical Equations Chemicalequations have reactants (things that chemically react) and products (that which is produced) Reactants ---------------> Products CAREFUL! Products are always on the end of the arrow Products <------------------- Reactants
- 9. Pancake Recipe 1 cupflour + 1 cup milk + 2 TBSP baking powder + 1 egg + 1 TSP salt (REACTANTS) (heat) -----------------------> 12 Pancakes (PRODUCTS)
- 10. Photosynthesis Equation light energy 6CO2 + 6 H2O ------------> C6H12O6 + 6 O2 How to read that: Carbon dioxide + water + light YIELDS Glucose + oxygen Reactants Products absorbed by chlorophyll
- 12. Where? Photosynthesis occursin the Chloroplast Stroma- fluid part of chloroplast (like cytoplasm) Grana- stack of thylakoids, contains chlorophyll Thylakoids- looks like stack of coins Draw that! ----->
- 13. Here’s another pictureof a chloroplast
- 14.
- 15. Here’s what theylook like, for real
- 16. What absorbs thelight? Chlorophyll- green pigment in plants that absorbs the energy from sun and converts it to chemical energy Carotenoids- Yellow, orange & red pigments that absorb light energy and pass onto chlorophyll
- 17. Quiz Yo Self!! Using the white boards, write your answer to the following questions. USE YOUR NOTES!!
- 18. What is thelight absorbing green pigment in chloroplasts called? A. Carotenoids B. Green C. Chlorophyll D. Water
- 19. What is thelight absorbing green pigment in chloroplasts called? A. Carotenoids B. Green C. Chlorophyll D. Water
- 20. Light energy isconverted to chemical energy through the process of…. A. Glycolysis B. Photosynthesis C. Cellular Respiration D. Fermentation
- 21. Light energy isconverted to chemical energy through the process of…. A. Glycolysis B. Photosynthesis C. Cellular Respiration D. Fermentation
- 22. Plants appear green because….. A.They absorb green wavelengths of light B. They reflect green wavelengths of light C. They absorb blue and yellow wavelengths, which makes green D. It’s an optical illusion and we’re all seeing different colors.
- 23. Plants appear green because….. A.They absorb green wavelengths of light B. They reflect green wavelengths of light C. They absorb blue and yellow wavelengths, which makes green D. It’s an optical illusion and we’re all seeing different colors.
- 24. Which of thefollowing is an example of an autotroph? A. Dog B. Cat C. Elephant D. Tree
- 25. Which of thefollowing is an example of an autotroph? A. Dog B. Cat C. Elephant D. Tree
- 26. The TWO partsof a chemical equation are… A. Reactants and Products B. Oxygen and Carbon dioxide C. Mitochondria and chloroplasts D. Peanut butter and jelly
- 27. A. Reactants andProducts B. Oxygen and Carbon dioxide C. Mitochondria and chloroplasts D. Peanut butter and jelly The TWO parts of a chemical equation are…
- 28. Write out theCORRECT chemical equation for photosynthesis
- 29. Check Yo Self… 6CO2 + 6 H2O ------------> C6H12O6 + 6 O2
- 30. In which organelledoes photosynthesis take place? A. Mitochondria B. Golgi body C. Nucleus D. Chloroplast
- 31. In which organelledoes photosynthesis take place? A. Mitochondria B. Golgi body C. Nucleus D. Chloroplast
- 32. Label the chloroplast! Word Bank Stroma Grana Thylakoid Cell membrane
- 33.
- 34. Now you can…. Identify where photosynthesis takes place Write the chemical equation for photosynthesis Explain why plants are green! Pat yourself on the back!
- 35. Essential Question Whatis the difference between the Light Reaction and Calvin Cycle during photosynthesis? Objective: I can explain how glucose is made.
- 36. Let’s Review! Usingthe notecards at your table, rearrange them into the correct chemical equation for photosynthesis.
- 37. Does it looklike this? 6 CO2 + 6 H2O ------------> C6H12O6 + 6 O2
- 38. 2 Cycles There aretwo cycles that work together to create glucose (C6H12O6) Light Reactions (require light) Calvin Cycle (doesn’t require light or dark) Photolysis- when a chemical (like water) is broken down by photons
- 39. Light Reaction- NeedsLight Occurs in the grana of chloroplasts Adds a phosphate to ADP to become ATP Splits water (H2O) to release O2 (oxygen) and H+ (hydrogen) Sends H+ over to Calvin Cycle That’s what we breathe!!
- 40. Remember Diffusion? Afterthe Light Reaction, oxygen (O2) diffuses out of the cell that we then breathe! That pore is called a stomata
- 41. Calvin Cycle- Doesn’tneed light! Occurs in the stroma of chloroplasts Takes in CO2 (Carbon Dioxide) Uses the ATP (energy) and H+ from Light Reaction Synthesizes (makes) GLUCOSE (C6H12O6) This can happen day or night