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Video: Cellular Respiration

Cellular respiration is the process of taking Oxygen and Glucose and turning it into ATP, energy for the body. In this lecture, that is the topic I deal with. It’s important to understand this process in order to understand how the body functions, because in order to do everything you do, energy is needed. This is different from the process of Photosynthesis in Plants because, unlike plants, we cannot produce our own energy from the energy obtained from the Sun.

This is part Chapter 9 in the textbook Biology: The Dynamics of Life, which is the chapter on Energy of the Cell.


  • What is Cellular Respiration?
  • The three stages of Cellular Respiration
  • Fermentation
  • The two Phases of Photosynthesis
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Leslie Samuel is the creator of Interactive Biology. His mission is to use this site to Make Biology fun for people all over the world.

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13 Responses to “Video: Cellular Respiration”

  1. Melissa Wyatt November 1, 2010 at 2:14 pm #

    cant get this to work :( it will only play about the first 5 seconds of it

    • Leslie November 1, 2010 at 7:26 pm #

      Hmm Melissa, you’re right. There seems to be something wrong with the fil.e Let me look into that. I will let you know when I get it fixed.

  2. Toni March 4, 2011 at 7:33 pm #

    I am doing biology in highschool, and cellular respiration is the subject we are doing at the moment. This has helped me a lot in understanding it. Thanks for putting it up on here.

    • Leslie March 5, 2011 at 7:33 pm #

      Toni, that’s awesome to hear. You are very much welcome. Glad I could help!

  3. jing June 28, 2011 at 1:46 am #

    Hi! I’m from the Philippines! thanks a lot! Your really an awesome and brilliant guy!

  4. jing June 28, 2011 at 1:49 am #

    Your website really helps me a lot! No WORDS can explain how much you make my life easy esp. with all the powerpoint presentations that I’ve downloaded.Thanks a lot! Your the only website that do not ask for any subscription fee! May GOD bless you always!!!!

    • Lrsamuel June 28, 2011 at 8:07 am #

      Glad to know you are finding value in the videos and powerpoints.

      All the best!

  5. Danielle January 18, 2012 at 8:56 pm #

    So much help!Thank you for all the helpful information! Could not have explained anything any easier.

  6. Rochele May 14, 2012 at 11:31 pm #

    this site is awesome ,im frm Jamaica and i have CSEC coming up idk what i would do if i didnt find this site. thanks alot

  7. Nithua June 7, 2012 at 11:46 pm #

    Hi Samuel! I was just a little bit confused regarding the number of ATP, NADH and FADH molecules produced by the Krebs Cycle and the number of ATP molecules produced by the ETC because in my textbook it says, the citric acid cycle produces 2 ATP, 8 NADH, H+ and 2 FADH2 per glucose molecule and, for the ETC, my textbook says The ATP-synthase produces 32 ATP per glucose molecule whereas you said the ETC produces 36 ATP. Could you help me out a little there please?


  8. Aaron June 9, 2012 at 5:16 am #

    Hey Leslie your videos are great! Just want to clarify something though, I always thought that the Electron transport Chain could produce 32/34 ATP whilst Krebs=2ATP and Glycolysis=net 2 ATP. In your video you have said the ETC produces 36 ATP. Could you please explain this? Thank you!

  9. Zena February 16, 2014 at 9:33 pm #

    This video has helped me greatly understand the cellular respiration process. The diagrams in my book only served to confuse me. This video broke it down so that I can understand.

  10. JOHNNIE IMINABO May 7, 2014 at 3:06 pm #

    Your lectures has helped me a lot. Your really doing a great job! Keep it up.