Electron Transport Chain Notes | Biochemistry UHS Exam | MCQs + Graphs + Quick Revision

These notes cover the Electron Transport Chain (ETC) — one of the most important and high-yield topics in biochemistry for MBBS / BDS (UHS exams). Clear explanation of Complex I–V Electron flow + proton pumping made easy ATP production (Oxidative Phosphorylation) simplified Includes inhibitors & uncouplers (very important MCQs) Neat diagram + one-page quick revision format Designed for last-day revision and viva Key topics included: Electron flow (NADH, FADH₂ → O₂) Proton gradient & chemiosmosis ATP yield (P/O ratio) Complex I, II, III, IV, V Inhibitors (Cyanide, Rotenone, Oligomycin) Uncouplers (DNP, Thermogenin) Clinical correlations Best for: 1st Year MBBS / BDS UHS Lahore exams MCQs + short questions Perfect for students who find ETC confusing — this sheet makes it simple, visual, and exam-ready