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Photosynthesis

Learn about photosynthesis, where organisms use light energy to create food. Discover types of organisms involved, essential components, equation details, and where the process occurs. Explore the vital role of chloroplasts and energy molecules in this crucial biological process.

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Photosynthesis

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  1. Photosynthesis Must love plants!!

  2. What is Photosynthesis • “Photo” = light • “synthesis” = to make or produce • Photosynthesis is the process in which organisms use light energy to make food. • Only plants, algae, & some bacteria photosynthesize

  3. Types of Organisms • Autotrophs: any organism that make their own food using the light energy (E) from the sun (plants/producers) • Examples: Trees, Flower, Grass

  4. Types of Organisms • Heterotroph: any organism that must consume other organisms in order to obtain energy. (Consumer) • Examples: Any Animal (humans)

  5. Autotrophs Need • Autotrophs need 3 essential things • Sunlight • H2O • CO2

  6. Autotrophs Produce • Autotrophs make two products • O2 - exits the organism through leaves • C6H12O6 -Remains in the organism as a food source (sugar)

  7. Photosynthesis Equation Reactants Products

  8. Law of Conservation of Matter • Matter is neither created nor destroyed, but simply changes forms. • Count the C, H, and O atoms on the reactants side. • Count the C, H, and O atoms on the products side. • What do you notice?

  9. Where Photosynthesis takes place • Photosynthesis takes place in Chloroplast. (only found in Autotrophs) • Chloroplast contain green pigments called Chlorophyll. • Chlorophyll uses the suns energy to preform photosynthesis

  10. Chloroplast

  11. Types of Energy • All organisms need to use/make energy to survive. • ATP (Adenosine Tri-Phosphate) is a molecule that stores and transports cellular energy “cellular currency” • ADP (Adenosine Di-Phosphate) is a molecule made from ATP. Contains little energy

  12. Types of Energy • NADP+ and NADPH are also energy molecules used during photosynthesis

  13. Reactions of Photo • 1. Light reaction or Light dependent • Occurs in the Thylakoid • Sun/light energy is absorbed by the chloroplast • H2O enters the roots • ATP is produced (fuels 2nd reaction) • O2 is produced and leaves as waste • “photo” part

  14. Reactions of Photo • 2. Dark reaction or Calvin Cycle • Occurs in the Stroma • Uses ATP from the light reaction and CO2 to produce C6H12O6 • The C6H12O6 is stored in the plant then can be used as food. • “synthesis” part

  15. Photosynthesis • Occurs in Chloroplast, chlorophyll • Occurs all the time • Reactants (input) CO2 + H2O + light E • Products (output) C6H12O6 + O2 • Light energy makes chemical energy (ATP and Glucose)

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