Aerobic Cellular Respiration

Aerobic Cellular Respiration. Topics include: Glycolysis, Pyruvate Oxidation (Acetyl-CoA Synthesis), Citric Acid Cycle (Kreb's Cycle), Electron Transport and Chemiosmosis. The slides used in this video are available under the "Review Slides" section here: tdelia-irsc.wee...

[@quinnmont]

So helpful! I'm in first year nursing and was so lost in my physiology class today! This really explained things better for me!

[@realtalk193]

All of your videos are very helpful, great information that helped me further understand each topic in the chapters. Thanks!

[@bluedutch01]

Excellent! Thank you so much. Does anyone really believe such elegance and complexity was not first thought out and then implemented by God?

[@tdeliabiology]

Thanks for letting me know. Good luck in your A&P course!

[@tdeliabiology]

Thanks, and good point about the ATPs! My number of 28 is in the ETC, not total overall, and there is a bit of a range that could be expected (see further explanation below). Hope that helps.

[@tdeliabiology]

Oxidation of malate to oxaloacetate is coupled to the reduction of NAD+, and the concentration of oxaloacetate is low since the reaction catalyzed by citrate synthase is highly exergonic (it's a cycle after all).

[@tdeliabiology]

I am glad that you found it helpful!

[@tdeliabiology]

Good Question! 36 ATP would be a good number if the entire process was 100% efficient. But, several steps along the way can take away from the overall ATP production. Some NADH and FADH2 are used in anabolic pathways (synthesis). Some H+ gradient created by the ETC is not used for ATP production (like bringing pyruvate into the mitochondria). And other reasons. A review of some textbooks puts the number of ATP typically created per glucose molecule somewhere around 30-34 (my book uses 28+).

[@tdeliabiology]

That's great. Thanks for letting me know. Good luck with your classes!

[@klipblop3824]

this is an excellent video.. thank you VERY much!

[@nemodot]

oxidation of HS to SO4 is also very exergonic, but all I read in textbooks is how its reduction potential isn't enough to couple NAD reduction.

[@tdeliabiology]

Thanks- good luck with your class!

[@nemodot]

I'm having a problem with redox potentials.
While looking at chemolithotrophs, sulfur oxydizing for example. I was told that the higher reduction potential for the oxidation of some of the sulfur reduced compounds than the potential for NAD+/NADH, made it need the reverse electron flow.
But looking at reactions in the citric acid cycle, malate oxydizes to oxalacetate producing NADH, even though the reacion is of a higher reduction potential. How's that?

[@tifi29]

Thank you so much! It was so helpful

[@cooldon7907]

this video is very useful but according to my books the Aerobic respiration gives total 38 ATPs!

[@TheMoath324]

Thaaaaaaaaaaaaaaank you're an amazing teacher