Enzymes and Energy

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Anonymous
ID:
48404
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Enzymes and Energy
Updated:
2010-11-09 07:28:37
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biology
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Description:
notes on enzymes and energy for biology
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  1. The essential to all life
    Energy
  2. What is energy?
    The esssential to all life
  3. In order to survive all living organisms must be able to?
    • Produce Energy
    • Store Energy
    • Use Energy
  4. One principle chemical compound that living things use to store energy?
    ATP (adenosine triphosphate)
  5. What is ATP?
    One of the principle chemical compounds that living things use to store energy.
  6. What is the formula for photosynthesis?
    6CO2+6H2O+Energy ------>C6H12O6+6O2
  7. What is a charged molecule?
    When phosphates have a negative charge; as a result the repel each other.
  8. The bonding of __________ requires ___________.
    phosphates; large amounts of energy
  9. AMP
    • adenosine monophosphate
    • one phosophate
  10. ADP
    • adenosine diphosphate
    • two phosphate
  11. When does energy from an ATP molecule become availble?
    When a phosphate breaks off
  12. Can ATP reform after being broken down into ADP?
    Yes
  13. Cellular proteins have a specific site where ATP can bind, which allows the cell to use energy for activites such as?
    • Making Proteins
    • Active cellular transport
  14. What are three uses of cell energy?
    • Maintaining Homeostasis
    • Cell repair
    • Building Molecules
  15. What provides the body with the most energy?
    Lipids
  16. What are enzymes?
    Biological catalysts; proteins that speed up the rate of chemical reactions.
  17. Enzymes help maintain what?
    Homeostasis
  18. What is homeostasis?
    A stable internal environment
  19. The chemical reactions in organisms would not proceed at a rate sufficent for __________ if it were not for enzymes.
    life
  20. What do all chemical reactions need?
    Activation energy
  21. What is activation energy?
    The energy needed to start a chemical reaction
  22. Enzymes _____________the amount of activation energy needed to start a reaction.
    reduce
  23. By lowering the activation energy______.
    reactions can occur quickly
  24. What are the three factors that affect an enzyme's activity?
    • Tempurature
    • pH level
    • Enzyme and Substrate Concentration (the higher the concentration, the higher the speed)
  25. Enzymes are specific which means?
    They are involved in one action
  26. What are common uses of enzymes in the home?
    • Cleaning products
    • Laundry detergents
  27. What is a substrate?
    A substance on which an enzymes acts upon during a chemical reaction.
  28. How does a chemical reaction work? (List the three steps)
    • A substrate dinds to the enzyme's active site; enzyme changes shape changes slightly
    • Bonds loosen and activation energy decreases
    • Product forms and the enzyme can help out another reaction

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