Electron Transport Chain - ATP Synthase, Chemiosmosis, & Oxidative Phosphorylation

This biology video tutorial provides a basic introduction into the electron transport chain - a series of membrane bound proteins that shuttle the electrons from NADH to an electron acceptor such as Oxygen. ATP synthase is the enzyme responsible for producing ATP using the energy extracted as protons diffuse from the intermembrane space back into the mitochondrial matrix in a process known as chemiosmosis. Oxidative phosphorylation is the combination of the electron transport chain and chemiosmosis.
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[@swiftiegirl3037]

Really great lesson, it really helped. But i have a question, in uni. Our teacher said nadh yields 2,5 and fadh2 yields 1,5 ATP, why it differs like this, is there an explanation?

[@InToXz]

sorry but where can I find stage 1,2 and 3

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Why is affinity for electrons referred to as electronegativity. Why does it have a positive number?

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hi! so are the 4 complex electron carriers? or just q?

[@roaahmed4669]

all of the complex considered carrier but ubiquinone and cytochrome c is the mobile complex the one that take the electron from one complex to another complex1 to 5 are stable in the inner membrane of the mitochondria

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[@zack_120]

3:15 - 1/2 O2 + 2H+ + 2e− → H2O: here 2e− appear redundant because one O atom (valence of 2-) are exactly neutralized by 2H+, so why are they here?

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Not really 1 O is neutralized by 2H not 2H+

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is ETC exothermic or endothermic

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[@AhmedAli-dp9gw]

I have I question ,,, does the ATP synthase considered as a part of the ETC ???considerate, that It doesn't transport electron.

[@koolkittykat04]

Technically, it’s considered the enzyme for oxidative phosphorylation, which is kind of the last step of the electron transport chain.

[@AhmedAli-dp9gw]

So it's a part of the ETC ?

[@nkamakimfuema5275]

@@AhmedAli-dp9gw ATP synthase is part of chemiosmosis. When ETC and chemiosmosis work together, then it is known as oxidative phosphorylation. Since ETC oxidizes and chemiosmosis phosphorylate ADP

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Goodmorning po kuya rol

[@maggielee7530]

What happens to cellular respiration, if ATP synthsis is blocked or inhibited

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Wouldn’t that just result in cell death?

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Fermentation or Lactic Acid

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is " ädam," the equivalent of an atom ? or of the ADAMs enzyme ? The first obstacle for non anglosaxon speakers is to decrypt the pronunciation into its transcription. The paradox is that written american is much more comprehensible than spoken mäouikon

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[@maeanngelizon7885]

Hi Can I ask how many ATP molecules are produced in every ETC complex? It was actually raised by our professor, according to him, every complex in the electron transport chain produces a particular amount of ATP.. He wants us to identify the ATP molecules produced in: Complex I Complex II Complex III Complex IV. Thank you so much for those who can help☺️

[@MuhammadAli-ez6dd]

None the ATP is produced in the ATP synthass molecule bot in the complex

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Only the ATP synthase produces ATP

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