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Thread: glucose question

  1. #1 glucose question 
    Forum Junior
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    Is the only substence that is glucose C6H12O6 or is any organic molecule with C H and O in the ratio of 1:2:1 called glucose? If not what is it called?

    Also how is alcohol made from fermintation? How is glucose involved? How does alcohol differ from lactic acid in chemical composition?


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  3. #2  
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    Yes, glucose is always C6H12O6.

    Ribose, sucrose, galactose, fructose, lactose, glucose, etc etc are all carbohydrates and have different formulas.

    Ethanol is C2H5(OH) and is produced from the fermentative catabolism of glucose, among other things. The process can occur in the absence of oxygen, allowing anaerobes to extract energy from glucose without respiration (an electron transport chain).

    Wikipedia almost certainly has a decent summary of fermentation. The key difference, at a cellular level, between fermentation and respiration is whether an electron transport chain is involved; if it is the glucose (or other carbohydrate) can be fully oxidized to CO2. If it isn't, the carbohydrate cannot be fully oxidized (not all energy is extracted from the glucose.)


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  4. #3  
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    Quote Originally Posted by free radical
    Yes, glucose is always C6H12O6.

    Ribose, sucrose, galactose, fructose, lactose, glucose, etc etc are all carbohydrates and have different formulas.

    Ethanol is C2H5(OH) and is produced from the fermentative catabolism of glucose, among other things. The process can occur in the absence of oxygen, allowing anaerobes to extract energy from glucose without respiration (an electron transport chain).

    Wikipedia almost certainly has a decent summary of fermentation. The key difference, at a cellular level, between fermentation and respiration is whether an electron transport chain is involved; if it is the glucose (or other carbohydrate) can be fully oxidized to CO2. If it isn't, the carbohydrate cannot be fully oxidized (not all energy is extracted from the glucose.)
    That really helped, thank you.
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  5. #4  
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    The fermentation processes involve dehydrogenation as the sugar, in whatever form you use, splits into ethanol and acetic acid, acetaldehyde and CO2 + impurities. There are several methods depending on whether you are striving for wine or beer, the latter able to be condensed into liquor.
    Darwin's Law
    Nature will tell us a lie if she can.

    Bloch's extension to Darwin's Law:
    So will Darwinists

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  6. #5  
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    ../and L tartaric acid...
    Darwin's Law
    Nature will tell us a lie if she can.

    Bloch's extension to Darwin's Law:
    So will Darwinists

    http://groups.msn.com/JUSTOUTOFTHEBOX
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