Video: Cellular Respiration

Video: Cellular Respiration

Leslie Samuel Biology 1, Cell Biology, Video Lectures 14 Comments

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

Comments 14

  1. Toni

    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.

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  2. jing

    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!!!!

    1. Post
  3. Rochele

    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

  4. Nithua

    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?


  5. Aaron

    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!

  6. Zena

    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.

  7. Zak

    Thank you very much! I have a very hard biology teacher who I feel rushes the important concepts in Biology. I struggle with it, getting C’s on all my tests even though I study for hours days before. I just watched a video tonight about Glycolysis, Krebs Cycle, and ETC (I’m not lazy :) I keep singing the “Coenzyme A to form Acetyl CoA”. I was able to understand concepts so much better now. I honestly cannot thank you enough, I just want to give you a big hug, seriously. You are a life-saver, thank you so much for caring about students like me, making kids confident in Biology, and for spending your time to do all this, It means so much to everyone. Thanks, Zak

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