Download - Photosynthesis and Cellular Respiration
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Photosynthesis and Cellular Respiration
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PHOTOSYNTHESIS• Most important biological process on earth• Fills food requirements & needs for fiber & building
material– Petroleum, natural gas, coal, firewood
• Photo means “light”• Synthesis means “to put together”• Photosynthesis happens in the chloroplast in
plants, some bacteria, and some protists.
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The Equation
Reactants Products
Carbon dioxide + Water sunlight Glucose + Oxygen(carbohydrate)
6CO2 + 6H20 C6H12O6 + 6 02
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Cellular Respiration• Takes place day and night in all living cellsplants, animals, protists, bacteria, and fungi.Step-by-step breakdown of high-energy
glucose molecules to release energy (ATP)
All living things take in food and oxygen to produce energy in the cell using cellular respiration.
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Where does it happen?
In the Cell– Mitochondria“powerhouse of the cell”
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Steps in cellular respiration1. Sugar (glucose= C6H12O6 ) from food is eaten. 2. Oxygen (02 ) is inhaled (breathed in from the water
in some organisms). 3. Food is broken down with the help of oxygen
through body chemical reactions (metabolism).4. Carbon dioxide (CO2 ) and water (H20 ) are exhaled.
5. 36 are produced in the reaction, which is energy needed for cellular activity.
ATP
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The equation
Reactants Products
Glucose + Oxygen Carbon dioxide + Water + Energy
(carbohydrate)
6CO2 + 6H20+C6H12O6 + 6 02ATP
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CELLULAR RESPIRATION DIAGRAM
MITOCHONDRION (IN THE CELL)
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Comparing both processes• You can say that the formulas for
photosynthesis and cellular respiration are the exact opposite:
Photosynthesis:
Cellular Respiration:
6CO2 + 6H20
6CO2 + 6H20ATP
C6H12O6 + 6 02
C6H12O6 + 6 02
NOTE: ATP is produced in both reactions, but CELLULAR RESPIRATION produces all the ATP needed for cells to function.
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