Biology 121 Chapter 7
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Equation for photosynthesis
6 Water molecule's + 6 Carbon dioxide molecule's + light is converted into 1 Glucose molecule and 6 Oxygen molecule's
What is photosynthesis?
Photosynthesis (photo = light and synthesis = to make) is the process plants use to change carbon dioxide into sugar using sunlight. This sugar, glucose, is their food, and the process gives off oxygen
Occurs in Stroma
Converts CO2 into Carbohydrates
It is a light-independent reaction
Light independent reactions that occur in the stroma within the process Carbon Fixation
Light-Dependent reactions occur in________
Thykaloid contains thousands of copies of 2 photosystems: Photosystem I (PS I) And Photosystem II (PS II)
Each photosystem contains 250-400 Chlorophyll and pigment molecules
Pigments absorb light and pass energy to the reaction center
- Contain Chlorophyll
- Chlorophyll is the main pigment that absorbs all light except green
3-step for Photosynthesis Light-Dependent Reactions
- 1. Sun emitts light energy which is (400-750 nm)
- 2. The light is either absorbed or reflected off surface.
- 3. The Chloroplasts contain chlorophyll that absorb these types of light radiation that is emitted.
Creates the hydrogen ion gradiant
is partially responsible for ATP Synthesis
C3 and C4 plants
C3 are plants like red oaks, they are more wasteful and produce less sugar(glucose)
C4 however, are plants like sugar cane, they are less wastefull and produce a lot of sugar(glucose)
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