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Cellular Respiration Part 2: The Citric Acid Cycle
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Cellular Respiration Part 2: The Citric Acid Cycle

Citric Acid Cycle Overview

Introduction to Citric Acid Cycle

  • Professor Dave discusses the evolution of metabolic pathways from glycolysis to the citric acid cycle in higher organisms.
  • Oxygen became abundant due to photosynthesis by plants, enabling aerobic respiration in mitochondria.
  • Mitochondria, believed to be separate organisms, play a crucial role in aerobic respiration within eukaryotic cells.

Steps of the Citric Acid Cycle

  • Pyruvate enters mitochondria and converts to acetyl CoA through decarboxylation and oxidation.
  • Acetyl CoA initiates the citric acid cycle by forming citrate through enzyme catalysis.
  • Successive reactions lead to the production of NADH, FADH2, and ATP per acetyl CoA molecule.

Overall Output of the Citric Acid Cycle

Video description

Sequels usually suck, but this one is really good. Nature figured out a way to improve on glycolysis by stumbling upon the citric acid cycle and oxidative phosphorylation, so let's look at the first of those two in this clip. Watch the whole Biochemistry playlist: http://bit.ly/ProfDaveBiochem General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biology Tutorials: http://bit.ly/ProfDaveBio Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1 Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2 Mathematics Tutorials: http://bit.ly/ProfDaveMaths EMAIL► ProfessorDaveExplains@gmail.com PATREON► http://patreon.com/ProfessorDaveExplains Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience! Amazon: https://amzn.to/2HtNpVH Bookshop: https://bit.ly/39cKADM Barnes and Noble: https://bit.ly/3pUjmrn Book Depository: http://bit.ly/3aOVDlT