Video: Photosynthesis

In this lecture, I cover the concept of Photosynthesis, the mechanism that plants use to produce energy and to make their food from the energy they obtain from the sun. It’s the process of converting LIGHT energy into CHEMICAL energy. ATP is produced in this process.

I also get into why we see different colors in terms of what wavelengths of light are being absorbed vs reflected. Lastly, I go through the 2 stages of Photosynthesis: Light-dependent and light-independent reactions, with some custom animations to illustrate the steps of those reactions.

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

Outline

  • What is Photosynthesis?
  • Where Photosynthesis Happens
  • Color: How it works
  • The two Phases of Photosynthesis


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  • Thank you so very much for making it so elementary for me. I cannot wait for my 2 children to come home from school (MPC Sint Maarten) to share your lecture with them.
    By the way I know your Mom and Annick went to CUC with me………A looooong time ago.
    I got this link from soencouragement.org.
    Your are doing a GOOD job for Jesus! Keep it up!
    May the Lord bless you and keep you in His peace.
    Mickaelle Page Leerdam

  • Hi Mickaelle,

    Great to have you on here from all the way over on the other side of the world 🙂

    Glad that it can be a help to you. I will try to keep it up and provide more and more lessons on a regular basis. Hope it makes Biology easier for your children 🙂

  • Hi Mickaelle,

    Great to have you on here from all the way over on the other side of the world 🙂

    Glad that it can be a help to you. I will try to keep it up and provide more and more lessons on a regular basis. Hope it makes it easier for your children 🙂

  • I just saw the presentation and it's great!. I'm a science teacher and I'm sure tha now I have a better way to explain this issue to my students. thankyou!

  • Thanks Luisa,

    I'm glad that I could help and I'm glad that it has helped give you a better way to explain these concepts to your students. Over time, I will be providing more and more resources to help with that. All the best!

  • I just saw the presentation and it's great!. I'm a science teacher and I'm sure tha now I have a better way to explain this issue to my students. thankyou!

  • Thanks Luisa,

    I'm glad that I could help and I'm glad that it has helped give you a better way to explain these concepts to your students. Over time, I will be providing more and more resources to help with that. All the best!

  • Thank you soooo much Leslie, Im taking a bio3 class in smc and I had a hard time getting the concept of photosynthesis. your video helped a lot 🙂

  • Thanks for all of your videos! I have watched one for every lesson this year! (You and reading the book are my secret weapons that cause my high test scores)

    -Thanks again, Freshman

  • I cant tell you how much you have helped me. I think you’re just a bit better than khan academy, just because of the whole presentation layout that you have. Thanks again.

  • You’re very welcome. Glad you’re able to learn something from them. Please stay tuned. We have more Biology videos coming very soon!

  • Wow! That’s good to hear 🙂 Excellent! Keep up the good work. We have more Biology videos coming very soon, so don’t forget to stay tuned!

  • THIS HELPED ME SO MUCH! I hope more Biology students who are struggling find this to make it clearer.

    I read the equation for photosynthesis with you. 🙂

  • Omg THANK YOU SO MUCH for uploading these videos ! Helped me and my friend so much with AP Biology 12 🙂 God bless.

  • Thanks for your videos they have helped me a lot!
    Could anyone possibly explain where Photosystems 1 & 2 fit into all of this? =)

  • You are honestly going to save my butt tomorrow on my AP biology test! Our teacher stands in the front and reads the textbook word for word, so it is impossible to retain the information! Thank you for explaining to me what on earth is going on 🙂

  • InteractiveBiology: I can be learning biology for few hours but this video is better than anything.. Only 20 minutes are needed to know what you need to know. This is amazing.

    Thanks a lot!

  • This is an awesome video, and really helped me understand this process a lot better than I could from my textbook. Thank you!

  • omg i having a test tomoro bout this , n thank god i understood it all , thanQ soooooooooo much , keep up the good work , ur awesome 😀 !!!!!!!!!!!!!!!!!!!!!!

  • cool animation and it helped me a lot . thank you very much ……………

  • Very helpful! I like to get a basis from a video before I begin to go over my notes and the book! This was great for that purpose and definitely made things much simpler!

  • hey , can you please explain what exactly is induction phase in photosynthesis?? please

  • I’ve just watched this video on photosynthesis, it’s now a lot clearer, I can go back to my text book and hope to understand what it is trying to tell me. Thank you

  • ohmygod thank you soo much!! I was sure i was going to fail the test i have tomorrow since i didnt understand this whole process and now its crystal clear! You are such a genius omg u saved my grade 😀

  • You make sense of what should already be simple. That’s a compliment…. believe me. Thank you

  • Thank you for the excellent video. I searched through heaps of photosynthesis videos before I found this one. It has more in depth explanations than most, yet easy to understand. Thanks heaps!

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