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Overview of Photosynthesis

Overview of Photosynthesis. What is Photosynthesis?. Plants use photosynthesis to make sugars Photosynthesis is a process that captures energy from sunlight to make sugars that store chemical energy. What is Photosynthesis?. 3. Equation for whole photosynthetic process

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Overview of Photosynthesis

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  1. Overview of Photosynthesis

  2. What is Photosynthesis? • Plants use photosynthesis to make sugars • Photosynthesis is a process that captures energy from sunlight to make sugars that store chemical energy

  3. What is Photosynthesis? 3. Equation for whole photosynthetic process  6CO2 + 6H2O → →→→→C6H12O6 (sugar)+ 6O2

  4. grana (thylakoids) chloroplast stroma Where does Photosynthesis occur? • Photosynthesis in plants occurs in chloroplasts • Takes place in two parts: stroma and thylokoid • Most chloroplasts are in leaf cells

  5. Functions of Photosynthesis • Plant produce food for themselves and other organisms. Where does ALL the energy originate from?

  6. Functions of Photosynthesis • All energy comes from the SUN!

  7. Functions of Photosynthesis 2. Regulates Earth’s environment (removes carbon dioxide from Earth’s atmosphere)

  8. Temperature • As temperature increases, the rate of photosynthesis increases to a maximum and then decreases when temps get too hot. • The rate peaks at a certain temperature, at which many of the enzymes that catalyze the reactions become ineffective. Also, the stomata begin to close, limiting water loss and entry of carbon dioxide.

  9. Which graph represents the affect of temperature on the rate of photosynthesis?

  10. Draw this graph in your notes

  11. Light Intensity • Rate of photosynthesis increases as light intensity increases • However, at some point all available e- are excited, and the maximum rate of photosynthesis is reached

  12. Which of the graphs represents the effect of light intensity on the rate of photosynthesis?

  13. Draw the circled image in your notes

  14. Photosynthesis Video

  15. Assignment • T4 pg. 113-115 • Periods 5 & 6 turn in notebooks

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