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Comments ( 25 )
  1. jzen2016
    December 13, 2012 at 6:22 am

    You learn this at all level, I learned it as a freshman in high school, a junior taking AP, and now a college freshman… Get used to it xD

    December 13, 2012 at 7:21 am

    you will learn about photosynthesis in intro bio, AP/IB bio, freshman in college bio, and probably more classes including anything about plants or sometimes cell bio classes too

  3. Emily Whitney
    December 13, 2012 at 7:34 am

    Excellent video though

  4. Emily Whitney
    December 13, 2012 at 8:13 am

    This is on people’s AP tests? Yikes, I’m a freshman and learning this now. Hmmmmm

  5. Alessio Guerra
    December 13, 2012 at 8:48 am

    you have saved my life, thank you!

  6. Cuteylious22
    December 13, 2012 at 9:40 am

    You sir have nice handwriting

  7. Emily Beck
    December 13, 2012 at 9:44 am

    thank you sooo much!  my friend recommended you to me and your videos saved me! haha:)

  8. TheTrainIsCominggggg
    December 13, 2012 at 9:46 am

    My mom is so happy that you’ve helped me get so high in my test! For only just 1 day of studying! Thank God that you are here!

  9. VioletAwakenings
    December 13, 2012 at 10:14 am

    Biology test tomorrow. lets do this shit.

  10. Amanita Funaro
    December 13, 2012 at 10:56 am

    thankkkkk u soo much u helped so much 😀 

  11. emollman
    December 13, 2012 at 11:13 am

    This video is good, but it perpetuates the misconception that photosynthesis exists to make food for animals. In fact, it is to make food for the organism that is undergoing photosynthesis. Something may or may not eat it.

  12. jzen2016
    December 13, 2012 at 12:12 pm

    something like Wacom Bamboo Pad

  13. Irene willow
    December 13, 2012 at 12:55 pm

    i think i love you.! THANKSS keep doing these videos helps a lot sometimes teachers just do not know how to teach thats when you go to KHAN for help

  14. defiantprogram
    December 13, 2012 at 1:09 pm

    when you’re too lazy to read the book KHANACADEMY

  15. jayfsamson
    December 13, 2012 at 2:02 pm

    How the heck do you write so nicely? Are you using a mouse?

  16. Tannermortimer
    December 13, 2012 at 2:46 pm

    Exam this week. Thanks Kahn!

  17. funnytroublemakers3
    December 13, 2012 at 3:44 pm

    Exam today i didnt even know we had… lets do this shit!

  18. Lilly Ottaviani
    December 13, 2012 at 3:56 pm

    Biology test on Photosynthesis tomorrow ! Thank God for Khan !

  19. Mads Bau-Madsen
    December 13, 2012 at 4:10 pm


  20. MissTrancyHUNTER
    December 13, 2012 at 4:28 pm

    Thank YOU~ soooo helpful for AP bio test tomorrow kekeke

  21. jkgao97
    December 13, 2012 at 4:42 pm

    Bio test tomorrow on Respiration and Photosynthesis… Thank yo soooooo much!!!

  22. Trever Thomas
    December 13, 2012 at 5:24 pm

    I love you.

  23. Maisey Carroll
    December 13, 2012 at 5:56 pm

    @khanacademy can u tell me what the writing thing is u use!! Plzzzzzzz

  24. Maisey Carroll
    December 13, 2012 at 6:33 pm

    My teacher loves ur videos!!! Can u tell me what u use for it!!

  25. gentlesnow123
    December 13, 2012 at 7:01 pm

    So much unnecessary, useless chit-chat… The main ideas could probably be summed it in about 6 – 7 minutes cuz the rest is useless chit-chat… ==”

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