Determining the exact yield of ATP for aerobic respiration is difficult for a number of reasons. In addition to generating ATP by oxidative phosphorylation in prokaryotic cells, proton motive force is also used for functions such as transporting materials across membranes and rotating flagella.
Also, some bacteria use different carriers in their electron transport chain than others and the carriers may vary in the number of protons they transport across the membrane. Chapter 3: Macromolecules. Chapter 4: Cell Structure and Function. Chapter 5: Membranes and Cellular Transport. Chapter 6: Cell Signaling. Chapter 7: Metabolism. Chapter 9: Photosynthesis. Chapter Cell Cycle and Division. Chapter Meiosis. Chapter Classical and Modern Genetics.
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Chapter Plant Structure, Growth, and Nutrition. Donate Login Sign up Search for courses, skills, and videos. Science Class 11 Biology India Respiration in plants Electron transport system and oxidative phosphorylation. Electron transport chain. Oxidative phosphorylation and chemiosmosis. Oxidative phosphorylation and the electron transport chain. Practice: Oxidative phosphorylation and the ETC.
Calculating ATP produced in cellular respiration. Next lesson. Current timeTotal duration Google Classroom Facebook Twitter. Video transcript - [Instructor] Alright, so, if we were gonna go on the ambitious task of tallying up how much ATP was produced in one cycle of cellular respiration or, just to be super clear here, I mean how much ATP was produced per the oxidation or breakdown of one molecule of glucose in cellular respiration?
We might start off by just getting ourselves organized and reminding ourselves that there are two kind of main ways that we produce ATP in cellular respiration so, the first minor contribution comes from something called substrate level phosphorylation. And remember that this is exactly what it sounds like, we have a substrate, or a molecule, I'm just gonna say R.
And remember that in the context of cellular respiration, this is usually, we think of this as a kind of metabolite, an intermediate metabolite of glucose, so somewhere along glucose is oxidation. We get a metabolite and we activate this metabolite with a phosphate group. And from this phosphate group, we can actually donate it directly to ADP to produce ATP, and of course our molecule also gets modified in the process, usually gaining a hydroxy group, but the details aren't entirely important except to realize that this phosphorylation is occurring at the level of a substrate.
This is in contrast, of course, to oxidative phosphorylation, which is where we get the bulk of our ATP.
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