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Chemical forumlas in Kreb's Cycle and Glycolysis...

Discussion in 'MCAT Discussions' started by passion2K7, Dec 7, 2005.

  1. passion2K7

    passion2K7 New Member

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    Hey guys,

    I am currently studying metabolism stuff, and have a quick question. I wanted to know if I need to know the chemical forumlas in Glycolysis and Kreb's cycle for the MCAT.

    -Passion2k7
     
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  3. anon-y-mouse

    anon-y-mouse Senior Member
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    no
    just which steps are aerobic / anaerobic. recognize pyruvate as 1/2 glucose too.
     
  4. passion2K7

    passion2K7 New Member

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    Thx for the quick reply.

    When you say which steps are anaerobic/aerobic, you mean glycolysis+pyruvate oxidation+cytric acid cycle+respiratory chain for aerobic vs. glycolysis+fermentation for anaerobic?

    For glycolysis, I know that it changes glucose (6c molecule) to two pyruvate (3c molecules), NAD+ into NADH +H, and 2 ADP+ PI -> 2 ATP's. Am I responsible for 10 steps within glycolysis. They seem to contain too much detail, and all I remember now is just that the first half steps are endergonic, while the rest are exergenic (enever-harvesting reactions to produce ATP's).

    For the Kreb's cycle, am I responsible for each step (such as taking NAD+ -> NADH + H & CO2 when going from Isocitrate to a-Ketoglutarate... etc)?

    Again, thx for the replies! =)
     
  5. DrBowtie

    DrBowtie Final Countdown
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    For class you might need to know them (I did) but I think it is beyond the scope of the MCAT.

    They won't ask a stand alone about the 6th step of the krebs and the enzyme used.
     
  6. anon-y-mouse

    anon-y-mouse Senior Member
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    yes, you heard me right

    and you should know that NADH is the 'charged' form... reduced

    ps, brett, have you taken the mcat yet :) I see your posts everywhere, what stage in the application process are you?
     
  7. DrBowtie

    DrBowtie Final Countdown
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    I'm prepping now yet I have obtained a wealth of info from various places.
     
  8. Nikki2002

    Moderator Emeritus 7+ Year Member

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    in o-chem section of mine had to know stucture (fischer projections) of various sugars (like fructose, glucose, galactose) at least biochem was good for something.........
     
  9. Twitch

    7+ Year Member

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    Anything else from biochem?
     

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