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Biology AHSGE Standard III- Photosynthesis and Cellular Respiration.

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Science AHSGE Standard II-1, part 2- Photosynthesis and Cellular Respiration.

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1 Biology AHSGE Standard III- Photosynthesis and Cellular Respiration

2 Photosynthesis and Cellular Respiration CONTENT STANDARD III. Identify reactants and products associated with photosynthesis and cellular respiration, and the purposes of these two processes. ELIGIBLE CONTENT A. Identify the chemical formula for photosynthesis. B. Identify the function of photosynthesis. C. Identify the chemical formula for respiration. D. Identify the function of respiration. E. Identify the relationship between photosynthesis and respiration.

3 Metabolism Metabolism- All of the chemical reaction s in a cell –Metabolic pathway- Series of chemical reactions in which the product of one reaction is the substrate for the next reaction Catabolic pathway- Release energy by breaking down large molecules into smaller ones Anabolic pathway- Use energy released by catabolic pathways to build larger molecules from smaller ones Relationship between catabolic and anabolic pathways result a continual flow of energy within organisms.

4 Photosynthesis Photosynthesis- Anabolic pathway in which light energy from the sun is converted to chemical energy for use by the cell –Autotroph/Producer- Organisms that perform photosynthesis –Use light energy, carbon dioxide and water to build molecules of glucose and oxygen –Chlorophyll (green pigment found in chloroplasts) is also required. –Glucose is transferred to other organisms for energy in the form of food. –Occurs in the leaf cells of plants

5 Photosynthesis Sunlight Chlorophyll 6CO 2 + 6H 2 O C 6 H 12 O 6 + 6O 2 Carbon Dioxide Water Glucose Oxygen Reactants Products

6 Cellular Respiration Cellular (Aerobic) Respiration- Catabolic pathway in which organic molecules are broken down to release energy for use in the cell –Aerobic- Requires oxygen –Oxygen is used to break down glucose resulting in the production of carbon dioxide and water. –ATP (Adenosine Triphosphate)- Biological molecule of stored energy produced by respiration Energy is released when the energy storing bond between the second and third phosphate is broken, forming ADP (Adenosine Diphosphate) and a free phosphate group. –Heterotroph- Organisms that can not produce their own food. –Occurs in the mitochondria (powerhouse) of cells.

7 Cellular Respiration C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + ATP Glucose Oxygen Carbon dioxide Water Adenosine triphosphate Reactants Products

8 Metabolic Pathway Photosynthesis and cellular respiration work together to complete a metabolic pathway The products of photosynthesis are the reactants of cellular respiration and vice versa. Photosynthesis is necessary to remove energy from the sun, where all energy ultimately comes from.

9 Metabolic Pathway

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