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Grade 9-12
1h 3m

The Circle of Energy: Photosynthesis and Cellular Respiration

by Karissa Fong | Science FREE

10 Lessons 1:03:19
  1. 1. Introduction 0:41
  2. 2. Light Dependent Reactions 10:39
  3. 3. Calvin Cycle 7:36
  4. 4. Activity 8:06
  5. 5. Glycolysis 7:44
  6. 6. Pyruvate Oxidation 3:54
  7. 7. Citric Acid Cycle 8:40
  8. 8. Oxidative Phosphorylation 9:22
  9. 9. Activity 3:59
  10. 10. Summary and Closing 2:38

Grade 9-12

1h 3m

NGSS Standards



About the course

Dive deep into the cells of plants and animals to learn how energy is used and produced! Plants use photosynthesis to create sugars from light energy and animals use cellular respiration to create energy as ATP from sugars. These are both complex processes, but we can break them down into a series of short videos that explain each step to understand how these processes are carried out!


  • ATP
  • Cells
  • Photosynthesis
  • Plants
  • Science
  • STEM


Hi! I'm Karissa, and I have been a tutor for 4 years with a focus on high school math and science. I am currently studying Environmental Biology at Cal Poly Pomona because I want to find a career that involves conservation efforts. I love to tutor because it allows me to share my passion for learning with others and I hope to inspire others to inquire about the world around them. The world is filled with wonders, so let’s learn about them together!

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