So before we move on and talk about chemiosmosis, in this video, we're going to share with you a very interesting diagram of this cartoon that can hopefully help you with remembering the electron transport chain or the ETC. And so here in this cartoon, the electron transport chain is represented as an airport. And so you can see that this highlighted region represents the inner mitochondrial membrane which is again this airport. And so notice that up above what we have is the outer mitochondrial membrane and you can see we're labeling the cytoplasm as this region at the very top here. And then, of course, the space between the inner and outer membranes of the mitochondria is going to represent the intermembrane space which here in this cartoon you can think of as the international airspace. And then, of course, down below what we have is the matrix of the mitochondria which is the innermost region of the mitochondria and so we're calling it here the drop-off matrix. And so you might recall that the NADH and FADH2 electron carriers can be thought of as these electron taxicabs. And so notice that we have these little electron taxicabs down below representing the NADH and FADH2. And so notice that these highlighted versions of these taxicabs are in their reduced forms because they have electron passengers. They carry 2 electrons. And so notice that this is the full version of the electron taxicab and these electron carriers, we know that they can pick up and drop off electrons and so here these electron carriers are dropping off electrons at this international airport which is again representing the electron transport chain. So, the electron carriers are dropping off electrons at the electron transport chain. The NADH drop off their electrons at an earlier region than the FADH twos which drop off their electrons at a different region of this airport or a different region of the electron transport chain. Now, these electron passengers are going to have luggage, or packages, that they carry with them and unfortunately, it turns out that the luggage or the packages that these electrons have are going to get turned into lost luggage or lost packages. And so the 'p' in packages can hopefully remind you of the 'p' in protons. And so what this means is that all of these packages or luggage is going to represent protons, which is why we have h+ inside of them. And so we know that there's going to be a buildup of protons in the intermembrane space as these electrons are being dropped off in the electron transport chain. And so these electrons that have been dropped off at this electron transport chain or at this airport are going to need to move through the electron transport chain or move through the airport. And we know that when you get to an airport there are different steps. You have to go through customs and then you have to get through security and then you have to wait in line to get on the actual airplane. And so these electrons are going to make their way through the electron transport chain to get to this airplane here and, once they're on the airplane we know that they're going to go to their final destination and the final destination represents the final electron acceptor which we know is going to be the big O and the big O is Orlando here in our cartoon and of course the big O or Orlando represents our final electron acceptor which we know is oxygen which is O2. And so Orlando here represents O2 and we know that in Orlando there are many different types of amusement parks and water parks and so you can think of a water park in all of these water slides and we know that once these electrons have gone to their final electron acceptor, oxygen, that they are going to react with protons to form water and so you can think of a water slide here to remind you of that idea and so we know that a little bit of water will be produced. And so hopefully, this little cartoon here can help you with remembering some of the steps and critical steps of the electron transport chain. So that being said, we'll be able to apply some concepts as we move forward and continue to learn more as well. So see you all in our next video.
Table of contents
- 1. Introduction to Biology2h 40m
- 2. Chemistry3h 40m
- 3. Water1h 26m
- 4. Biomolecules2h 23m
- 5. Cell Components2h 26m
- 6. The Membrane2h 31m
- 7. Energy and Metabolism2h 0m
- 8. Respiration2h 40m
- 9. Photosynthesis2h 49m
- 10. Cell Signaling59m
- 11. Cell Division2h 47m
- 12. Meiosis2h 0m
- 13. Mendelian Genetics4h 41m
- Introduction to Mendel's Experiments7m
- Genotype vs. Phenotype17m
- Punnett Squares13m
- Mendel's Experiments26m
- Mendel's Laws18m
- Monohybrid Crosses16m
- Test Crosses14m
- Dihybrid Crosses20m
- Punnett Square Probability26m
- Incomplete Dominance vs. Codominance20m
- Epistasis7m
- Non-Mendelian Genetics12m
- Pedigrees6m
- Autosomal Inheritance21m
- Sex-Linked Inheritance43m
- X-Inactivation9m
- 14. DNA Synthesis2h 27m
- 15. Gene Expression3h 20m
- 16. Regulation of Expression3h 31m
- Introduction to Regulation of Gene Expression13m
- Prokaryotic Gene Regulation via Operons27m
- The Lac Operon21m
- Glucose's Impact on Lac Operon25m
- The Trp Operon20m
- Review of the Lac Operon & Trp Operon11m
- Introduction to Eukaryotic Gene Regulation9m
- Eukaryotic Chromatin Modifications16m
- Eukaryotic Transcriptional Control22m
- Eukaryotic Post-Transcriptional Regulation28m
- Eukaryotic Post-Translational Regulation13m
- 17. Viruses37m
- 18. Biotechnology2h 58m
- 19. Genomics17m
- 20. Development1h 5m
- 21. Evolution3h 1m
- 22. Evolution of Populations3h 52m
- 23. Speciation1h 37m
- 24. History of Life on Earth2h 6m
- 25. Phylogeny2h 31m
- 26. Prokaryotes4h 59m
- 27. Protists1h 12m
- 28. Plants1h 22m
- 29. Fungi36m
- 30. Overview of Animals34m
- 31. Invertebrates1h 2m
- 32. Vertebrates50m
- 33. Plant Anatomy1h 3m
- 34. Vascular Plant Transport2m
- 35. Soil37m
- 36. Plant Reproduction47m
- 37. Plant Sensation and Response1h 9m
- 38. Animal Form and Function1h 19m
- 39. Digestive System10m
- 40. Circulatory System1h 57m
- 41. Immune System1h 12m
- 42. Osmoregulation and Excretion50m
- 43. Endocrine System4m
- 44. Animal Reproduction2m
- 45. Nervous System55m
- 46. Sensory Systems46m
- 47. Muscle Systems23m
- 48. Ecology3h 11m
- Introduction to Ecology20m
- Biogeography14m
- Earth's Climate Patterns50m
- Introduction to Terrestrial Biomes10m
- Terrestrial Biomes: Near Equator13m
- Terrestrial Biomes: Temperate Regions10m
- Terrestrial Biomes: Northern Regions15m
- Introduction to Aquatic Biomes27m
- Freshwater Aquatic Biomes14m
- Marine Aquatic Biomes13m
- 49. Animal Behavior28m
- 50. Population Ecology3h 41m
- Introduction to Population Ecology28m
- Population Sampling Methods23m
- Life History12m
- Population Demography17m
- Factors Limiting Population Growth14m
- Introduction to Population Growth Models22m
- Linear Population Growth6m
- Exponential Population Growth29m
- Logistic Population Growth32m
- r/K Selection10m
- The Human Population22m
- 51. Community Ecology2h 46m
- Introduction to Community Ecology2m
- Introduction to Community Interactions9m
- Community Interactions: Competition (-/-)38m
- Community Interactions: Exploitation (+/-)23m
- Community Interactions: Mutualism (+/+) & Commensalism (+/0)9m
- Community Structure35m
- Community Dynamics26m
- Geographic Impact on Communities21m
- 52. Ecosystems2h 36m
- 53. Conservation Biology24m
8. Respiration
Electron Transport Chain
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Electron Transport Chain practice set
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