Oxidative phosphorylation involves the flow of both electrons and...

Question

Oxidative phosphorylation involves the flow of both electrons and H+. Explain the roles of these movements in the synthesis of ATP.

Accepted Answer

Welcome back. Let's look at our next problem. It says the mechanism through which a TP production is connected to the flow of electrons via the mitochondrial electron transport chain. And the resulting oxygen consumption is known as let's kind of parse through all the words in this problem here. And we know we have an electron transport chain, electrons passing through it. And that is connected to a T. P. Production with consumption of oxygen. And all this is taking place. I want to focus on this important word in the mitochondria. So when we look at this whole process, electron transport chain consumption of oxygen production of a. T. P. In the mitochondria. That is the process of oxidative phosphor relation. Population being the transfer of a phosphate group to a T. P. At the end of this process and oxidative uh using that oxygen molecule. So that's our answer here. Let's just walk through the other answer. Choices. Choice B says photo phosphor relation. Well, as we can tell, we look at that prefix Photo and that gives us a hint. We're talking about the process of photosynthesis. Photo phosphor relation is that mechanism through which a TP production is connected with the flow of electrons through an electron transport chain with resulting oxygen consumption. But that's taking place in the chloroplast, not in the mitochondria. So that's why photo phosphor relation isn't our correct answer. Um photo phosphor elation happens as part of photosynthesis in the chloroplast. So we eliminate choice B. Choice C says substrate level phosphor relation. Um Well this does produce a T. P but it produces a T. P. It does not involve an electron transport chain. So no electron transport chain involved. It produces a three P 80 P through the direct transfer of a phosphate group from another molecule in the substrate. And this occurs during the Calvin cycle and during Black A'Lexus. But again, it is not a connection of a Tv production with the flow of electrons through the electron transport chain to direct transfer a phosphate from the high another high energy molecule. And that energy is used to transfer phosphate to ADP molecule, generating a teepee. So cross off Choice C. And finally Choice diese cyclic photo phosphor relation. Well, this is a subset of that photo phosphor relation we mentioned. That takes place in the chloroplasts in this case. Um Only photo system one is used and it's called cyclic because the electrons that go through the electron transport chain are recycled back to the chlorophyll molecule rather than being passed on to an electronic sector. So again, cyclic photo phosphor relation does not take place in the mitochondria. It's part of that. It's a form of photo phosphor relation takes place in the chloroplast and cyclic, since the electrons just keep being reused within the photo system rather than going onto an electronic sector. So once again the mechanism through which a TP production is connected to the flow of electrons via the mitochondrial electron transport chain. And the resulting oxygen consumption is known as choice A oxidative phosphor phosphor relation. See you in the next video.

Oxidative phosphorylation involves the flow of both electrons and H+. Explain the roles of these movements in the synthesis of ATP.

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