Cellular Respiration: How Do Cells Get Energy?
Science ABC
Dec 3, 2021 10:30
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Chapters
How do cells get energy? In this video, we explain cellular respiration in simple words — from the burning potato analogy (same energy, no flames) to the three steps: glycolysis, the Krebs cycle, and the electron transport chain. Learn how one glucose molecule produces up to 32 ATP, what ATP is (the cell's energy currency), why the mitochondria is the powerhouse of the cell, how NADH and FADH2 carry energized electrons, and why cyanide kills by blocking the electron transport chain.
Whether you're a biology student preparing for an exam, or curious about how your body converts a potato into the energy to run, think, and breathe, this beginner-friendly animated explainer covers it all.
CHAPTERS:
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KEY TOPICS COVERED:
• Cellular respiration: glucose + oxygen → ATP + CO2 + water
• ATP: the cell's energy currency (phosphate bonds store energy)
• Glycolysis: splitting glucose into pyruvates (net 2 ATP)
• Krebs cycle: acetyl CoA → NADH + FADH2 in the mitochondria
• Electron transport chain: NADH/FADH2 → proton gradient → ATP synthase
• Why cyanide kills: blocks oxygen from accepting electrons
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REFERENCES:
https://openstax.org/books/biology-2e/pages/7-1-energy-in-living-systems
https://www.ncbi.nlm.nih.gov/books/NBK21154/
Voice Over: John Staughton (https://www.fiverr.com/jswildwood)
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Science & Technology
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