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The Relationship Between Cellular Respiration and Photosynthesis (How Do…
The Relationship Between Cellular Respiration and Photosynthesis
Equation
Cellular Respiration
C6H12O6 + 6O2 --> 6CO2 + 6H2O
Photosynthesis
6CO2 + 6H2O --> C6H12O6 + 6O2
How Do They Connect?
C6H12O6 and O2 from Photosynthesis feeds Cellular Respiration
CO2 and H2O from Cellular Respiration are used in Photosynthesis along with energy from sunlight
Equations are direct opposites- Water is broken down to form oxygen during Photosynthesis and oxygen is combined with hydrogen to form water in Cellular Respiration.
Both process create energy, Photosynthesis in the form of glucose and Cellular Respiration in the form of ATP.
Process
Photosynthesis
Light Reactions
Converts solar energy to chemical energy and produces O2
Photosystem II gives off electrons to Photosystem I using the Electron Transport Chain.
Photosystem I produce NADP+ that combines with ATP to make NADPH
Calvin Cycle
Uses ATP and NADPH from light reactions to fuel sugar synthesis
Reduces CO2 to Sugar
Hydrogen ions produced in photosystem II are used to fuel the ATP synthase pump.
Cellular Respiration
Electron Transport Chain (ETC)
Produces 32 to 36 ATP molecule with the use of an ATP synthase pump.
Takes place in the mitochondrial membrane
Takes energy from NADH and FADH2
1 hydrogen ion and 2 electrons accepted by NAD+, Sometimes FAD is used instead of NAD+ which accepts 2 electrons and 2 hydrogen ions to become FADH2
Citric Acid Cycle (Krebs)
Releases 4 carbons as CO2 and ATP
Takes place in the mitochondrial matrix
Prep Reaction
Carbon Dioxide is Released
Pyruvate is oxidized
Takes place in the mitochondria
Glycolysis
Breakdown of glucose with or without oxygen present
Where Does it Happen?
Mitochondria
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Chloroplasts
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grana sacs made of thylakoids
membrane
all inside stroma (fluid)
Cytoplasm
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