How Photosynthesis Works

Photosynthesis is the process in which autotrophs convert light energy from the sun into chemical energy in the form of organic compounds, mainly carbohydrates.

Most all autotrophs use the process of photosynthesis. Since photosynthesis involves a complex series of chemical reactions, where the product of one reaction is consumed in the next reaction, it is referred to as a biological pathway. There are two main cycles in photosynthesis, the light cycle, and the dark or Calvin cycle.

The light cycle requires light to work. The light cycle takes place in the chloroplast of a plant cell, more specifically in the thylakoids. The chlorophylls of the thylakoid are what absorb and trap the light energy. Before the light cycle starts, the cell must take in sunlight, water, and carbon dioxide. Once the water is inside the cell the atoms spit and the oxygen atom leaves the cell. The released oxygen atom then forms with another oxygen atom to form and oxygen molecule. The equation of photosynthesis is this: 6CO2 + 6H2O Light energy C6H12O6 + 6O2. After the cell releases the oxygen the light travels through the thylakoid membrane and is converted to chemical energy, which is temporarily stored in ATP and NADPH.

The dark reaction is a series of enzyme assisted chemical reactions to form a 3-carbon sugar. Two of the three carbon sugars combine to from glucose, a very important think in cellular respiration. Overall the dark cycle is when carbon dioxide and the chemical energy stored in ATP and NADPH are used to form organic compounds. Though glucose is not a direct product of photosynthesis it is formed for cellular respiration.

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21 Responses to “How Photosynthesis Works”
  1. ammi Says...

    On October 29, 2008 at 7:06 am

    i love learin adout photoynthesis

  2. StarAngel Says...

    On February 25, 2009 at 4:39 am

    I like the article, but there are quite a few spelling mistakes can you try to fix them! Thanks

  3. connor Says...

    On May 5, 2009 at 9:45 am

    not realy that clear, try takin it down a notch. mmkay.

  4. Robbi Says...

    On November 24, 2009 at 2:49 am

    I like this site because it explains the meaning of photosynthesis clearly

  5. photoman Says...

    On March 26, 2010 at 7:08 pm

    Thanks for shedding light on this subject. buahahaha

  6. Jesus Says...

    On May 6, 2010 at 7:20 pm

    photosynthesis is the work of the devil.

  7. Anonymous Says...

    On May 6, 2010 at 7:25 pm

  8. Simon Says...

    On May 6, 2010 at 7:26 pm

    Hands on head!

  9. Derp a derp Says...

    On May 6, 2010 at 7:31 pm


  10. der hur Says...

    On May 6, 2010 at 7:33 pm

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  11. The Alimighty Follower Says...

    On May 12, 2010 at 7:40 pm

    Amen to that man

  12. Here Says...

    On May 13, 2010 at 7:08 pm

    Here is another link I thought was useful

  13. Kirby Says...

    On May 23, 2010 at 1:27 am


  14. Captin Falcon Says...

    On May 23, 2010 at 1:28 am


  15. Harry Potter Says...

    On May 23, 2010 at 1:29 am

    Photosynthesis is the work of Voldermort

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  17. ecitsuJ Says...

    On May 23, 2010 at 1:36 am

    Heres another good link for more detailed info:

  18. urmum Says...

    On June 14, 2010 at 9:44 am

    go home

  19. haer Says...

    On June 14, 2010 at 9:48 am

    you mum in bedtakena hike tell her to meet me at 7:00

  20. hannahmontana11 Says...

    On September 2, 2010 at 8:50 pm

    im doing a homework assignment for this, its cool. (: i like learin about it

  21. Harry Says...

    On October 7, 2010 at 8:55 pm

    nice thanks for doing my homework

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