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Aerobic Respiration


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Aerobic Respiration

  1. 1. Aerobic Respiration Investigating Cells Standard Grade Biology
  2. 2. Aims <ul><li>Why do living cells need energy? </li></ul><ul><li>How do cells get their energy? </li></ul><ul><li>What do cells release with this energy? </li></ul>
  3. 3. Why do living cells need energy? <ul><li>Cells need energy for various purposes. </li></ul><ul><li>Can you think of any? </li></ul>Cell Division Movement Synthesis Maintaining Body Temperature
  4. 4. Why do living cells need energy? <ul><li>Food is the source of chemical energy for most living things. </li></ul><ul><li>How much energy is there in different foods? </li></ul><ul><li>Devise an experiment to answer this question. </li></ul><ul><ul><li>Write a method. </li></ul></ul><ul><ul><li>Draw a diagram of your setup. </li></ul></ul><ul><ul><li>Draw a table for your results. </li></ul></ul>
  5. 5. Why do living cells need energy? <ul><li>What problems are there with your method? </li></ul><ul><li>What can scientists use to get a more accurate measurement of the energy content of foods? </li></ul><ul><ul><li>Food Calorimeter </li></ul></ul>
  6. 7. Why do living cells need energy? <ul><li>Why is the food calorimeter more accurate: </li></ul><ul><ul><li>Find your answers on page 71. </li></ul></ul><ul><li>What are the units for measuring energy? </li></ul><ul><li>How much energy does it take to raise the temperature of 1l of water by 1 º C? </li></ul><ul><li>Copy Table 8.1 page 71. </li></ul>
  7. 8. How do cells get their energy? <ul><li>A chemical reaction takes place in all living cells to release energy from food. </li></ul><ul><li>This reaction is called respiration. </li></ul><ul><li>What are the raw materials? </li></ul><ul><li>What are the products? </li></ul><ul><li>The word equation for this reaction is: </li></ul>Glucose + Oxygen [Energy] Carbon Dioxide Water + +
  8. 9. Looking at the experiments <ul><li>For each experiment answer the following </li></ul><ul><li>What part of the respiration equation is being studied here? </li></ul><ul><li>Is there a control? Describe it or describe how it should be. </li></ul>