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Photosynthesis and Cellular Respiration. 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 ”
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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.
The Equation Reactants Products Carbon dioxide + Water sunlight Glucose + Oxygen (carbohydrate) 6CO2 + 6H20 C6H12O6 + 6 02
Cellular Respiration • Takes place day and night in all living cells plants, 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.
Where does it happen? In the Cell • Mitochondria “powerhouse of the cell”
Steps in cellular respiration • Sugar (glucose= C6H12O6 ) from food is eaten. • Oxygen (02 ) is inhaled (breathed in from the water in some organisms). • Food is broken down with the help of oxygen through body chemical reactions (metabolism). • Carbon dioxide (CO2) and water (H20 ) are exhaled. • 36 are produced in the reaction, which is energy needed for cellular activity. ATP
The equation Reactants Products Glucose + Oxygen Carbon dioxide + Water + Energy (carbohydrate) ATP C6H12O6 + 6 02 6CO2 + 6H20+
CELLULAR RESPIRATION DIAGRAM MITOCHONDRION (IN THE CELL)
Comparing both processes • You can say that the formulas for photosynthesis and cellular respiration are the exact opposite: Photosynthesis: Cellular Respiration: 6CO2 + 6H20 C6H12O6 + 6 02 C6H12O6 + 6 02 6CO2 + 6H20 ATP NOTE: ATP is produced in both reactions, but CELLULAR RESPIRATION produces all the ATP needed for cells to function.