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Photosynthesis

Photosynthesis. Light Absorption. Sun gives off visible light R ed , O range , Y ellow , G reen , B lue , I ndigo , V iolet Some colors reflected to our eyes Some colors absorbed into the object viewing. Prism. Choices : Red Orange Yellow Green Blue Indigo Violet.

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Photosynthesis

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  1. Photosynthesis

  2. Light Absorption • Sun gives off visible light • Red, Orange, Yellow, Green, Blue, Indigo, Violet • Some colors reflected to our eyes • Some colors absorbed into the object viewing

  3. Prism

  4. Choices: Red Orange Yellow Green Blue Indigo Violet Which color(s) are being reflected? Yellow Which color(s) are being absorbed? Red, Orange, Green, Blue, Indigo, Violet

  5. Choices: Red Orange Yellow Green Blue Indigo Violet Which color(s) are being reflected? Blue Which color(s) are being absorbed? Red, Orange, Yellow, Green, Indigo, Violet

  6. Choices: Red Orange Yellow Green Blue Indigo Violet Which color(s) are being reflected? None Which color(s) are being absorbed? All (Red, Orange, Yellow, Green, Blue, Indigo, Violet)

  7. Choices: Red Orange Yellow Green Blue Indigo Violet Which color(s) are being reflected? All (Red, Orange, Yellow, Green, Blue, Indigo, Violet) Which color(s) are being absorbed? None (all colors are reflecting into our eyes)

  8. Choices: Red Orange Yellow Green Blue Indigo Violet Which color(s) are being reflected? Green Which color(s) are being absorbed? Red, Orange, Yellow, Blue, Indigo. Violet

  9. Light Absorption Green reflected • With leaves, green light reflected (so we see green leaves) • Reds and blues most used in photosynthesis Red, Orange, Yellow, Blue, Violet absorbed into the leaf

  10. Photosynthesis • Defined: Production of sugar & oxygen from CO2, water, & sunlight • Endergonic reaction: Reaction that requires energy (sunlight) • Who: Autotrophs (Plants, algae, some bacteria) • End Result: Sugar & oxygen waste

  11. Stage 1: Light Dependent (Light Reactions) Thylakoid membrane O ATP H2 ATP H2 O • Where: Thylakoid membranes of chloroplast • What happens? 1) Sunlight converted into ATP energy 2) Water (H2O) broken apart • Hydrogen kept for later use; Oxygen is released as a waste • End result: ATP, H2, Oxygen Thylakoid membrane Thylakoid membrane ATP H2 O ATP O H2 ATP H2 O ATP H2 O

  12. Stage 1: Light Dependent (Light Reactions) What is used during the light dependent stage? What is created during the light dependent stage?

  13. O Stage 2: Light Independent (Dark Reaction) CO2 C O H2 H H ATP CO2 C O ATP O H H H2 H H H2 C CO2 O O CO2 C O O H • Where: Stroma (fluid interior) of chloroplast • What happens? • CO2 is taken in • ATP breaks apart CO2 + H2 • C’s, O’s, and H’s recombine into C6H12O6 (Glucose) H2 H ATP ATP C O CO2 O C6H12O6 ATP CO2 C O O ATP H2 H H H H H2 Stroma (fluid interior)

  14. Stage 1: Light Independent (Dark Reactions) What is used during the light independent stage? What is created during the light independent stage?

  15. Connection between photosynthesis & respiration • Plants • Create glucose through photosynthesis • Glucose is used to make ATP through cellular respiration • Animals • Animals eat plants to obtain their glucose • Glucose is used to make ATP during cellular respiration

  16. Kobe Kuiz Which color(s) is/are absorbed by a typical red apple? Which color(s) is/are reflected by a typical red apple? What is used during the light dependent reactions? What created during the light dependent reactions? What is used during the light independent reactions? What created during the light independent reactions? True or False: Plants are the only photosynthetic organisms.

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