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AHSGE OBJECTIVE 3

AHSGE OBJECTIVE 3. Identify reactants and products associated with photosynthesis and cellular respiration, and the purposes of these two processes. AHSGE OBJECTIVE 3. ELIGIBLE CONTENT Identify the chemical formula for photosynthesis. Identify the function of photosynthesis.

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AHSGE OBJECTIVE 3

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  1. AHSGE OBJECTIVE 3 Identify reactants and products associated with photosynthesis and cellular respiration, and the purposes of these two processes.

  2. AHSGE OBJECTIVE 3 • ELIGIBLE CONTENT • Identify the chemical formula for photosynthesis. • Identify the function of photosynthesis. • Identify the chemical formula for respiration. • Identify the function of respiration. • Identify the relationship between photosynthesis and respiration.

  3. AHSGE OBJECTIVE 3 Study the equation below: 6 CO2 + 6 H2O + sunlight  --?-- + 6 O2 Which product is missing from the equation? • A sugar • B water • C carbon • D hydrogen

  4. AHSGE Obj 3 Photosynthesis And Respiration • Which two substances are products of respiration? • A) water and oxygen • B) sugar and oxygen • C) water and carbon dioxide • D) carbon dioxide and sugar

  5. Photosynthesis • Uses energy from the sun to make food • Stores it in chemical bonds in sugars • This is how most of the energy for living things originates with the sun

  6. Photosynthesis • Broken down into two parts • Light dependent reactions and light independent reactions

  7. Photosynthesis • Light dependent reactions make ATP • Light independent then take the ATP and use it to make sugars

  8. Light dependent reactions • Frees electrons to split water molecules and make ATP • Electrons are moved down electron transport chain. • Splitting water frees electrons to replaced those freed earlier and produces the oxygen released by photosynthesis (photolysis)

  9. Light independent reactions • Calvin cycle: occurs in stroma of the chloroplast • Uses carbon dioxide to make sugars

  10. Cellular Respiration • Combines oxygen with food (glucose) to provide energy for living things. • Cells use energy from food to convert ADP into ATP storing energy in the chemical bonds that hold on the extra phosphate. • ADP can then be recycled and used again to form more ATP

  11. Cellular Respiration • First stage is glycolysis • Glycolysis is anaerobic and occurs in the cytoplasm of the cell • Frees 4 ATP

  12. Cellular Respiration • Next stage takes place in the mitochondria • Citric acid cycle • Also uses electron transport chain to make ATP

  13. Cellular Respiration • A total of 36 ATP is produced by cellular respiration, but 4 are used during the process, leaving a balance of +32.

  14. Fermentation • Breaking down food for energy without oxygen • Alcohol and lactic acid are two types of fermentation • The body uses lactic acid fermentation when oxygen supplies are not enough to continue with normal cellular respiration • Not very efficient, makes you feel the burn

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