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Cell Processes

Cell Processes. Photosynthesis and Cellular Respiration. Metabolism. Sum of all the chemical reactions in a cell Includes reactions that break down food to get energy for the cell Includes reactions that take molecules and build bigger compounds to help the cell function. Producers.

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Cell Processes

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  1. Cell Processes Photosynthesis and Cellular Respiration

  2. Metabolism • Sum of all the chemical reactions in a cell • Includes reactions that break down food to get energy for the cell • Includes reactions that take molecules and build bigger compounds to help the cell function

  3. Producers http://www.units.muohio.edu/dragonfly/itc/blackwal.gif • What is a producer? • An autotrophic organism • Autotrophic means the organism makes its own food from raw materials • Example: plants • Plants make their own food (sugars aka glucose, starch, cellulose aka carbohydrates!) • Plants create their own energy by making their own food http://www.hawaiianmagic.net/images/plantsampler.jpeg

  4. Cellular Process: Photosynthesis • Carried out by producers (autotrophs) • Inputs: carbon dioxide, water, energy from the sun • Outputs: glucose (sugar) and oxygen • Chemical equation: 6 CO2 + 12 H2O + light energy --> C6H12O6 + 6 O2 + 6 H2O Photosynthesis: photo = light; synthesis = putting simple things together to make something complex

  5. Cellular Process: Photosynthesis • Photosynthesis: the process a plant (or other autotroph) goes through to convert sunlight and raw materials into food (sugar) for the plant Green plant (autotroph) Inputs Outputs CO2 Glucose (C6H12O6) H2O O2 Sunlight

  6. Consumers • Organisms that get their food by eating other organisms and raw materials • Consumers are HETEROTROPHIC organisms: they cannot make their own food, they do not do the process of photosynthesis

  7. Cellular Process: Cellular Respiration • Plant and animal cells do cellular respiration to get energy from their food to fuel all other cellular processes and reactions • Cellular respiration: series of reactions that use oxygen to break down the energy from food (glucose and other macromolecules) to get energy for the cell to use in other reactions and processes

  8. Cellular Process: Cellular Respiration Inputs Outputs Consumer Carbon dioxide Glucose water oxygen Energy (ATP)

  9. Cellular Process: Cellular Respiration • Glucose + oxygen --> carbon dioxide + water + ATP (energy for the cell) C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O + ATP (energy) http://www.eou.edu/chemweb/molmodel/images/h2ofc.gif http://www.bristol.ac.uk/Depts/Chemistry/MOTM/atp/atp.gif http://www.biology.lsu.edu/introbio/Link2/glucose.gif http://www.ebi.ac.uk/chebi/displayImage.do?defaultImage=true&imageIndex=0&chebiId=16526

  10. Photosynthesis & Cellular Respiration • They are interrelated! • Outputs (products) of photosynthesis are the inputs (reactants) of cellular respiration Inputs Green plant (autotroph) Outputs Consumer Inputs Outputs CO2 Glucose (C6H12O6) CO2 H2O H2O O2 Sunlight Energy (ATP) Outputs of cellular respiration are the inputs of photosynthesis

  11. Cellular Process: Cellular Respiration • Consumers undergo cellular respiration in every cell 24/7 • Producers do the process of photosynthesis only during sunlight hours • Producers undergo cellular respiration at night--> the sugar the plant made during the day gets broken down at night to give the plant cell energy to perform other processes

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