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    ok look at this picture of the krebs cycle
    http://uwstudentweb.uwyo.edu/a/ateeter/krebs_cycle.gif

    2H are taken away from the pyruvate to reduce NAD to reduced NAD right??

    ok my book says "The resulting 2-carbon molecule combines with coenzyme A to form acetly coenzyme A (acetyl CoA). .. the two hydrogen atoms released are involved in ATP formation."

    But the diagram shows that its involved in the formation of reduced NAD

    i dont understand did the book make a mistake?
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    (Original post by SeekerOfKnowledge)
    ok look at this picture of the krebs cycle
    http://uwstudentweb.uwyo.edu/a/ateeter/krebs_cycle.gif

    2H are taken away from the pyruvate to reduce NAD to reduced NAD right??

    ok my book says "The resulting 2-carbon molecule combines with coenzyme A to form acetly coenzyme A (acetyl CoA). .. the two hydrogen atoms released are involved in ATP formation."

    But the diagram shows that its involved in the formation of reduced NAD

    i dont understand did the book make a mistake?
    They are involved in ATP formation, and they are used to make reduced NAD. I'm not sure how far you've got with respiration, but the reduced NAD is taken off to the electron transport chain, and the hydrogens (protons) are offloaded. They're pumped across the membrane of the cristae into the space between the double membranes, creating a proton gradient. The energy from this pumping comes from the electrons being transported through carrier proteins in the membrane (hence electron transport chain). They then flow through a channel in the membrane associated with ATP synthase, and as they flow through they cause the bonding of ADP with inorganic phosphate groups to form ATP. This process is known as chemiosmosis, and the formation of ATP as oxidative phosphorylation.

    Hope that helps, ask if there's anything you don't understand


    EDIT: Although the conversion of pyruvate to acetyl coA is actually the link reaction, and is not part of the Krebs Cycle :P
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    (Original post by xXxBaby-BooxXx)
    They are involved in ATP formation, and they are used to make reduced NAD. I'm not sure how far you've got with respiration, but the reduced NAD is taken off to the electron transport chain, and the hydrogens (protons) are offloaded. They're pumped across the membrane of the cristae into the space between the double membranes, creating a proton gradient. The energy from this pumping comes from the electrons being transported through carrier proteins in the membrane (hence electron transport chain). They then flow through a channel in the membrane associated with ATP synthase, and as they flow through they cause the bonding of ADP with inorganic phosphate groups to form ATP. This process is known as chemiosmosis, and the formation of ATP as oxidative phosphorylation.

    Hope that helps, ask if there's anything you don't understand


    EDIT: Although the conversion of pyruvate to acetyl coA is actually the link reaction, and is not part of the Krebs Cycle :P
    how did i miss that! lol thanks check your rep
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    (Original post by SeekerOfKnowledge)
    how did i miss that! lol thanks check your rep
    Haha no problem. It's nice to know my biology has finally been useful

    And thanks
 
 
 
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