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Week 9   energy, metabolism, and atp (oct 10-13)
 

Week 9 energy, metabolism, and atp (oct 10-13)

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    Week 9   energy, metabolism, and atp (oct 10-13) Week 9 energy, metabolism, and atp (oct 10-13) Presentation Transcript

    •  
    • Biology I: Energy, Metabolism, and ATP
    • Agenda – Mon. Oct. 10, 2011 Warm-Up (5 min): Lesson (15 min): Wrap-Up (10 min): Finish Projects/Missing Quizzes (20 min):
    • Today’s Objectives
      • I will define: energy , thermodynamics , metabolism , photosynthesis , cellular respiration , and adenosine triphosphate (ATP) .
      • I will articulate the first and second laws of thermodynamics.
      • I will classify two types of metabolism.
    • Warm-Up
      • Does available energy decrease or increase as you go up an energy pyramid?
      • Make a simple food chain using only words.
      • Label your organisms as producer, primary consumer, secondary consumer, tertiary consumer, or decomposer.
      • Energy is the ability to do work.
      How Do Organisms Obtain Energy? Cellular Energy
      • Thermodynamics is the study of the flow and transformation of energy in the universe.
      Chapter 8
    • Laws of Thermodynamics
      • First law — energy cannot be created nor destroyed.
        • Derived from the law of conservation of energy .
      How Do Organisms Obtain Energy? Cellular Energy
      • Second law — energy cannot be converted without the loss of usable energy.
        • Example: When consumers convert chemical energy into kinetic energy, some energy is loss as heat to the environment but NOT destroyed.
      Chapter 8
    • Metabolism – all of the chemical reactions in a cell How Do Organisms Obtain Energy? Cellular Energy
      • Photosynthesis — light energy from the Sun is converted to chemical energy for use by the cell
      • Cellular respiration — organic molecules are broken down to release energy for use by the cell
      Chapter 8
    • ATP: The Unit of Cellular Energy How Do Organisms Obtain Energy? Cellular Energy Chapter 8
    • ATP: The Unit of Cellular Energy
      • ATP releases energy when the bond between the second and third phosphate groups is broken , forming a molecule called adenosine diphosphate (ADP) and a free phosphate group.
      How Do Organisms Obtain Energy? Cellular Energy Chapter 8
    • Wrap-Up
      • Energy cannot be converted or destroyed.
      • Energy can be converted and destroyed.
      • Energy can be converted but not destroyed.
      • Energy can be destroyed but not converted.
      Which statement describes the law of conservation of energy? Cellular Energy Wrap-Up (Oct. 10) Chapter 8
    • Which law of thermodynamics explains why the ladybug receives the least amount of usable energy? Cellular Energy Wrap-Up (Oct. 10) Chapter 8
      • the first law of thermodynamics
      • the second law of thermodynamics
      Cellular Energy Wrap-Up (Oct. 10) Chapter 8
    • True or False All of the energy from the food you eat comes from the sun. Cellular Energy Wrap-Up (Oct. 10) Chapter 8
      • It captures light energy from the sun.
      • It is produced in anabolic pathways.
      • It stores and releases chemical energy.
      Why is adenosine triphosphate (ATP) such an important biological molecule? Cellular Energy Wrap-Up (Oct. 10) Chapter 8
      • It converts mechanical energy to thermal
      energy.
    • Look at the following figure. Which molecule is released when ATP becomes ADP? Cellular Energy
      • phosphate group
      • water molecule
      • ribose sugar
      • energy cells
      Wrap-Up (Oct. 10) Chapter 8
    •  
    • Agenda – Thurs. Oct. 13, 2011 Warm-Up (5 min): Finish up all Missing Assignments!! No new material will be covered until after fall break!! Those who don’t have missing work MAY WORK ON A PLUS ASSIGNMENTS ONLY.
    • Today’s Objectives
      • I will define: energy , thermodynamics , metabolism , photosynthesis , cellular respiration , and adenosine triphosphate (ATP) .
      • I will articulate the first and second laws of thermodynamics.
      • I will classify two types of metabolism.
    • Warm-Up
      • Which law of thermodynamics is related to the energy pyramid?
      • How is ATP used to create energy?
      • The ability to do work is ____________.