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Ch. 8 Photosynthesis LM p. 41-42

Ch. 8 Photosynthesis LM p. 41-42. ENERGY & LIFE. Autotrophs get energy they need to produce food from the sun (or a light source) ATP stores energy for cell activities like active transport & movement within the cell. PLANT EXPLORATION…. Priestley: Plants produce oxygen (O 2 ).

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Ch. 8 Photosynthesis LM p. 41-42

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  1. Ch. 8 PhotosynthesisLM p. 41-42

  2. ENERGY & LIFE • Autotrophs get energy they need to produce food from the sun(or a light source) • ATP stores energy for cell activities like active transport & movement within the cell

  3. PLANT EXPLORATION… Priestley: • Plants produce oxygen (O2) Ingenhousz: • Plants need light to produce oxygen (O2) Van Helmont: • Plants need water to grow

  4. Plants are green because of the pigment ______________.(which absorbs light energy) CHLOROPHYLL • During the fall, the green chlorophyll pigments are greatly reducedrevealing the other pigments. • Carotenoids are pigments that are either red or yellow.

  5. Chloroplast Structures & Function: • Locate the … • Thylakoids • Granum • Stoma • 2 stages of photosynthesis: • Light-dependent reactions • Calvin Cycle (Light-independent)

  6. Light Dependent Reactions • Light absorbed by chlorophyll (in Thylakoids) • ADP converted to ATP • Convert NADP+ to NADPH (Electron Carriers) • Produce Oxygen (O2) gas

  7. Calvin Cycle • CO2 enters from atmosphere • Energy from ATP & NADPH used to convert 3-carbon molecule to higher energy • Produces a single 6-carbon sugar molecule

  8. Basic Process of Photosynthesis: H2O CO2 Sun LIGHT Light Dependent Reactions Calvin Cycle CHRLORPLAST O2 Sugars

  9. Factors that affect the rate of Photosynthesis are… • Availability of Water • Temperature • Intensity of Light • Concentration of CO2

  10. “World of Plants: Photosynthesis”Video Notes & Quiz • Clear your desk except for the video notes page & pencil/pen • Answer each question while watching the short video clip on photosynthesis (There will be a video quiz at the end)

  11. CH. 9 CELL RESPIRATION H.W. LM p. 43 (#1-5)!!!

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