1 / 52

Photosynthesis

This lesson focuses on teaching the process of photosynthesis, including the locations, reactants, and products involved. It also explores the relationship between photosynthesis and cellular respiration. Students will watch a video, answer questions, and create a stop-motion video to demonstrate their understanding.

ekey
Download Presentation

Photosynthesis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Photosynthesis Mrs. Stewart Advanced Honors Biology

  2. Bell Work • Pick up the note page from the front desk • Take out leaf the color sheet from yesterday

  3. Bell Work • Get your photosynthesis pogil out from yesterday (if you turned it in to the basket, go get it)

  4. Video Quiz

  5. Standards • CLE 3210.3.3 Investigate the relationship between the processes of photosynthesis and cellular respiration. • SPI 3210.3.3 Compare and contrast photosynthesis and cellular respiration in terms of energy transformation.

  6. Objectives: • Identify the locations for both phases of photosynthesis • Identify the reactants and products for both phases of photosynthesis • Be able to write the full equation for photosynthesis

  7. Find a Partner

  8. ATP • Principal energy compound • Stores energy in the bond between 2 and 3 phosphate groups • Energy is released when last phosphate group is broken off • ATP = 3 phosphates • ADP = 2 phosphates

  9. Whole Point? • To convert the sun’s energy to usable chemical energy (ATP)

  10. The Big Picture Photosynthesis Cellular Respiration

  11. Lilo and Stitch Together • Define autotrophs and heterotrophs, and give an example of each.

  12. Phenomenon • Watch this video • Answer the following questions: • What are the flowers doing? • Why are they doing it?

  13. Photosynthesis Reaction 6 CO2 + 6 H2O + Light  6 O2 + C6H12O6 Light Energy O2 CO2 C6H12O6 H2O

  14. Photosynthesis Basics Where does photosynthesis take place? Inside the chloroplasts.

  15. Vocabulary granum Chloroplast

  16. Endosymbiosis

  17. Endosymbiotic Theory

  18. Evidence For Endosymbiotic Theory • Both Chloroplasts and Mitochondria… • Have circular DNA chromosomes • Have their own ribosomes • Reproduce independently within the cell • Reproduce exactly like bacteria • Have double membranes (one original and one that formed from the original endocytosis)

  19. Lilo • Tell Stitch where the all reactions of photosynthesis will occur inside a plant cell

  20. Phenomenon • How did it all get started? • Photosynthesis: • Amazing new mutation that spurred the advancement of species into multicellular organisms? OR • Responsible for the first major extinction event after life appeared on the planet?

  21. Pigments • Absorb different wavelengths of light (colors) • Reflect (transmit) what they do not absorb • We see what is reflected back.

  22. Types of pigments • Chlorophylls – reflect yellow and green light • Carotenoids – reflect yellow, orange and red light • Anthocyanins – reflect red and blue light

  23. The Visible Light Spectrum

  24. Chlorophyll • Most common pigment used in photosynthesis is chlorophyll

  25. Chlorophyll • Chlorophyll absorbs all colors except green and yellow • Reflects green and yellow back

  26. Why do leaves change color?

  27. Stitch:Tell Lilo… • Why are leaves (plants) green?

  28. Fill in the blanks: Dark Reaction Calvin Cycle

  29. Calvin Cycle Electron Transport chain Glucose (sugars)

  30. Light & Dark Reactions • Photosynthesis has 2 phases: • Light reactions: Light from the sun/indoor lights used • Dark reactions (Calvin Cycle): No light needed

  31. Photosynthesis Overview: Step 1: Energy from the sun is used to split water into hydrogen and oxygen. The oxygen is released Step 2: Hydrogen is combined with Carbon Dioxide to make sugars H2O O2 H2 + CO2 C6H12O6

  32. Light Reaction Steps: • Photolysis – energy from the sun is used to split water molecules • Oxygen is released • Hydrogen electrons are sent to the Electron Transport Chain and become “energized” (pick up the sun’s energy) • The carrier molecule NADP+ pick up Hydrogen, (creating NADPH), and carries it to the Calvin Cycle • Light reactions occur in the thylakoids

  33. Dark Reaction Steps: • Hydrogen carried on NADPH is added to Carbon Dioxide (CO2) during carbon fixation in the Calvin Cycle. • Glucose (C6H12O6) is produced. • Dark reactions occur in the stroma

  34. Where does it happen? • Two Stages: • Light Cycle: • Calvin Cycle: Takes place in the thylakoid Takes place in the stroma

  35. Lilo • Walk Stitch through the steps for the light dependent reactions of photosynthesis

  36. Stitch • Walk Lilo through the steps of the dark reactions (calvin cycle)

  37. Light-Dependent Reaction • Reactants: • Products: • H2O and Light energy • NADP+ and ADP+ from the Calvin cycle. • O2 gas • ATP and NADPH – to Calvin cycle

  38. Calvin Cycle • Reactants: • Products: • CO2 • ATP & NADPH – from light cycle • Sugars • ADP and NADP+

  39. Putting it all together

  40. Lilo • Walk Stitch through ALL of photosynthesis

  41. Stitch • Walk Lilo through ALL of photosynthesis

  42. Lilo and Stitch Working Together • How do the light-dependent and light-independent cycles of photosynthesis depend on each other?

  43. Bell Work • Get your plickers cards • Get out your photosynthesis notes and get ready to start back on your videos

  44. Lilo and Stitch Working Together: Create a stop-motion video to show the steps of photosynthesis • REQUIREMENTS: Must show… • Photolysis occurring – oxygen leaving and hydrogen electrons going to ETC to get energized • NADP+ picking up H (and energized electrons) to take to Calvin Cycle • Calvin Cycle = Carbon fixation – adding H to CO2 to create glucose (be creative – use correct # of ea.) • Show correct locations for each process

  45. Diffusion in Action

  46. Stomata • Stomata (plural) stoma (singular): Specialized cells that create a pore in the leaves that allow air (CO2, O2, water vapor) to come and go.

  47. Lilo and Stitch Together • Determine why plant cells want to close their stoma during the day even though that is when the sun is at its best.

  48. Lilo and Stitch- Think together • If plants close their stomata to prevent evaporation, no carbon dioxide diffuses in. What will this mean in terms of glucose production?

  49. Objectives • Discovery – photosynthesis video • Can you identify the reactants and products of the light-dependent and light-independent (Calvin) cycle in the equation? • Identify the location of each phase of photosynthesis in the video

  50. Objectives • Compare and contrast the light-dependent and light-independent cycles of photosynthesis in terms of reactants and products • Identify the location for the light-independent (Calvin cycle) for photosynthesis

More Related