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8-3 The Reactions of Photosynthesis

8-3 The Reactions of Photosynthesis. Pg. 208. A. Inside a Chloroplast. 1. Photosynthesis takes place in chloroplasts. 2. Chloroplasts contain saclike photosynthetic membranes called thylakoids (stacks are called grana ). . A. Inside a Chloroplast.

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8-3 The Reactions of Photosynthesis

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  1. 8-3 The Reactions of Photosynthesis Pg. 208

  2. A. Inside a Chloroplast • 1. Photosynthesis takes place in chloroplasts. • 2. Chloroplasts contain saclike photosynthetic membranes called thylakoids(stacks are called grana).

  3. A. Inside a Chloroplast • 3. Proteins in thylakoid membranes organize pigments, including chlorophyll, into groups called photosystems.

  4. A. Inside a Chloroplast • 4. Area outside of the thylakoid membranes are called the stroma.

  5. Thylakoid, Stroma, Grana, Inner membrane, Outer membrane, Intermembrane space

  6. B. Electron Carriers • 1. High energy electrons need to be carried from chlorophyll to other molecules.

  7. B. Electron Carriers • 2. NADP+ holds 2 high energy electrons by changing to NADPH.

  8. B. Electron Carriers • How does NADP+ become NADPH? • How does ADP become ATP?

  9. C. Light-Dependent Reactions • 1. Light-dependent reactions require light and produce oxygen gas and change ADP and NADP+ into energy carriers ATP and NADPH.

  10. C. Light-Dependent Reactions • 2. ATP Synthase is located on the thylakoid membrane. Video

  11. C. Light-Dependent Reactions • 3. ATP Synthase binds ADP and a phosphate group to make ATP.

  12. D. The Calvin Cycle • 1. Plants use energy contained in ATP and NADPH from the light-dependent reactions during the calvin cycle to make high-energy sugars (glucose).

  13. Can you put these in order?? • Six Carbon Sugar produced • Five Carbon Molecule Regenerated • Energy Input from ATP and NADPH • Six Carbon Dioxide molecule enters from atmosphere

  14. Can you put these in order?? • 1. Six Carbon Dioxide molecules enter from atmosphere • 2. Energy Input from ATP and NADPH • 4. Five Carbon Molecule Regenerated • 3. Six Carbon Sugar produced (C6H12O6)

  15. Brainstorm • Make a list of three factors that you think can impact the process of photosynthesis.

  16. E. Factors Affecting Photosynthesis • 1. Shortage of water can stop or slow photosynthesis. • 2. Best temperature is best between 0 and 35°C. • 3. AS light intensity increases, photosynthesis increases, but at a certain level it reaches a max.

  17. Exit Ticket • Pg. 216 Complete the Flow Chart • WORD BANK (Only use 5 of the words below) • Light, NADP+, Light-dependent reactions, NADPH, Chloroplasts, Carbon Dioxide, Photosystem, Sugars, Chlorophyll

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