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Homework Help: Reactants of Photosynthesis & Respiration (as well as the product)

  1. Aug 22, 2006 #1
    I just want to know if the info that I am retaining is right.

    The reactants of photosynthesis is

    6H20 + 6CO2

    which would be six molecules of water and six molecules of carbon dioxide.

    The product - would be C6H12O6 + 6O2 which would be one molecule of sugar plus six molecules of O2.

    The reactants for respiration are glucose and oxygen.

    The product would be 6H2O + 6CO2.

    If this is correct please let me know, so I know I am on the right track..
    Thanks RG
    Last edited: Aug 22, 2006
  2. jcsd
  3. Aug 22, 2006 #2
    Don't forget to put light in the photosynthesis equation :) Also, be sure to denote the second equation as "aerobic respiration" and it yields ATP (energy). You're on the right track.
  4. Aug 22, 2006 #3

    so it would be 6Co2 + 6H20 + light energy ..right?

    The free energy would that be the ATP???

    Glucose + oxygen --------> carbon dioxide + water (free energy)
    (aerobic respiration)
  5. Aug 22, 2006 #4
    Yes, the photosynthesis equation is looking good.

    I wouldn't use the term "free energy" with ATP as it can be confusing when you start to learn about Gibbs Free Energy. Just call it an "energy source". The equation you provided also needs ATP on the reactants side.
  6. Aug 22, 2006 #5
    Where would I put the ATP ?
  7. Feb 25, 2011 #6
    6H20 + 6CO2 + light energy(absorbed by chlorophyll --> C6H12O6 + 6O2

    6*water + 6*Carbon dioxide + light --> 1*glucose + 6*oxygen

    C6H12O6 + 6O2 --> 6CO2 + 6H2O + energi ( 38 ATP-molekyler= 40%)( + 60% Heat).

    1*Glucose + 6*oxygen --> 6 carbon dioxide + 6*water + energi(38 ATP-molekyler= 40%)( + 60% Heat)
  8. Feb 25, 2011 #7


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    I hope RainGurl's teacher is accomodating and will allow her to turn in her work a bit late... 4 1/2 years late!
  9. Feb 26, 2011 #8
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