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Thread: Link reactions and Krebs cycles?

  1. #1 Link reactions and Krebs cycles? 
    Forum Senior Booms's Avatar
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    I have an appauling Biology teacher,
    I'm A2 and have had 4 lessons of worksheets to fill in, she seems to have no idea how to teach whatsoever, lesson before last she just told us to make notes of a page in our bio books didn't teach sodall


    but on to the point

    Last lesson we were instructed to make powerpoints to present to the class next lesson (yup...powerpoints....for yr 13's..) on Glycolysis, Link Reactions, Krebs Cycles and Coenzymes

    she brushed over glycolysis at the begining of the year but that was it...
    No glycolysis I'm fine with, there's helpful diagrams in the book and it's easy to find online, Glucose reacts with ATP etc etc untill the Triose Intermediatary group looses it's Phosphates and several Hydrogens to Coenzyme NAD and ADP forming Pyruvate
    i'm also ok with Coenzymes, the book tells me coenzymes are NAD (Nicotinamide Adenine Dinucleotides) and CoA (something of acetyl I think)


    What I can't find anything on is Links Reactions and Krebs Cycles, theres a brief overview of the chapter in my book and as far as I can tell Link Reaction converts the Pyruvate from Glycolysis into Acetyl, and the Krebs cycle does something with the Acetyl but that's it
    It's kinda hard to teach yourself brand new things out of a book designed to SUPPORT your teacher.. not replace her



    any help?


    It's not how many questions you ask, but the answers you get - Booms

    This is the Acadamy of Science! we don't need to 'prove' anything!
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  3. #2  
    Forum Professor sunshinewarrior's Avatar
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    Tried wiki yet?

    Krebs Cycle


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  4. #3  
    Forum Cosmic Wizard i_feel_tiredsleepy's Avatar
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    Your book is probably calling the pyruvate dehydrogenase complex the links reactions.

    http://en.wikipedia.org/wiki/Pyruvat...genase_complex
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  5. #4 Re: Link reactions and Krebs cycles? 
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    Quote Originally Posted by Booms
    I have an appauling Biology teacher,
    I'm A2 and have had 4 lessons of worksheets to fill in, she seems to have no idea how to teach whatsoever, lesson before last she just told us to make notes of a page in our bio books didn't teach sodall


    but on to the point

    Last lesson we were instructed to make powerpoints to present to the class next lesson (yup...powerpoints....for yr 13's..) on Glycolysis, Link Reactions, Krebs Cycles and Coenzymes

    she brushed over glycolysis at the begining of the year but that was it...
    No glycolysis I'm fine with, there's helpful diagrams in the book and it's easy to find online, Glucose reacts with ATP etc etc untill the Triose Intermediatary group looses it's Phosphates and several Hydrogens to Coenzyme NAD and ADP forming Pyruvate
    i'm also ok with Coenzymes, the book tells me coenzymes are NAD (Nicotinamide Adenine Dinucleotides) and CoA (something of acetyl I think)


    What I can't find anything on is Links Reactions and Krebs Cycles, theres a brief overview of the chapter in my book and as far as I can tell Link Reaction converts the Pyruvate from Glycolysis into Acetyl, and the Krebs cycle does something with the Acetyl but that's it
    It's kinda hard to teach yourself brand new things out of a book designed to SUPPORT your teacher.. not replace her



    any help?
    You seem to have it pretty much right if memory serves. Pyruvate from glycolysis (a low-energy yielding process) feeds into Krebs which cycles to creat NADH to transfer electrons into the ETC (high-energy yield).
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