MCAT Metabolism Part 3: ETC & Oxidative Phosphorylation Explained
MCAT Metabolism Part 3: ETC & Oxidative Phosphorylation Explained  
Podcast: Jack Westin MCAT Podcast
Published On: Tue Jul 22 2025
Description: In Episode 27, we wrap up our Metabolism series by diving into one of the most testable—and often misunderstood—topics on the MCAT: The Electron Transport Chain (ETC) and Oxidative Phosphorylation.We cover everything you need to know for MCAT success:🔬 What You’ll Learn:Where ETC happens: The inner mitochondrial membraneComplex I vs. Complex II: NADH vs. FADH₂The secret identity of SDH (succinate dehydrogenase)How proton gradients drive ATP productionWhy uncouplers like 2,4-DNP are dangerousWhy cyanide is lethal (hint: Complex IV)Final ATP yields from NADH and FADH₂ (30–36 total!)📚 Pro Tip: Make sure to review Redox and Thermodynamics before watching this episode.Next up: We'll break down alternative fuel sources—like proteins, fats, and ketones—in our upcoming non-glucose metabolism episode!Want to learn more? Shoot us a text at 415-855-4435 or email us at podcast@jackwestin.com! 📱📚 Free Resources: https://jackwestin.com 🎓 Live Education Sessions: https://jackwestin.com/sessions 👨🏻‍🏫 Courses: https://jackwestin.com/courses 🙋 Tutoring: https://jackwestin.com/services/live-online-mcat-tutoring📸 Follow Us On Instagram: https://www.instagram.com/jackwestinmcat👥 Join our Facebook Study Group: https://www.facebook.com/groups/freemcatprep