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Postby MrMistery » Mon Jun 06, 2005 7:34 pm

No victor, no fermentation uses oxygen. Fermentation is by definition anaerobic. There are 2 things that you might be confusing this with: the fact that saccharomyces cerivisiae(yeast) can do aerobic respiration if there is oxygen in the environment. If there is not, it does fermentation.
In some books they mention an acetic fermentation. This is not a true fermentation since it requires oxygen(pasteur proved that it does). The reaction is as follows:
CH3CH2OH + 02 --> CH3COOH + H2O
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haha

Postby victor » Tue Jun 07, 2005 7:31 am

A small correction Andrew...There are 2 steps to form acetic acid from ethanol.
CH3CH2OH + O2 --------> CH3CHO + H2O (Ethanal) then it countinues to
CH3CHO + O2 ---------> CH3COOH + H2O (Acetic acid)
Perhaps, you need an ethanol with a primary OH substance (coz there's no place to make the secondary one :lol: )

Oh, about Saccharomyces cereviceae whics can do aerobic and anaerobic, it's no wonder...because S.cereviceae is an anaerobic facultative organism which is breath using oxygen if there's oxygen and doing fermentation if there's no oxygen.
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Postby MrMistery » Wed Jun 08, 2005 7:49 pm

Thanks for telling me about those 2 stages, victor. I can't believe that none of my books says something so important
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That's chem

Postby victor » Fri Jun 10, 2005 12:39 pm

Perhaps you'll not find it in your bio book maybe because those step was explained in my chemistry book :lol: . But, by the way Andrew, your bio knowledge is so great. I'm really no match for you.. :lol:
Oh yes...a little bit addition...ethanal is IUPAC name..the trivial name is "Acetaldehyde" and Acetic acid is the trivial name...the IUPAC name is Ethanoic acid...perhaps maybe you've known 'bout this..
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Postby MrMistery » Fri Jun 10, 2005 9:46 pm

By some strange coincidence, i have heard about that. But since probably not everybody knows acetic acid is still a better term since we are not chemists :D
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Postby b_d_41501 » Fri Jun 10, 2005 11:05 pm

To heck with acetic acid, just call it Vinegar. lol .j/k :lol:
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Chemist and biologist

Postby victor » Sun Jun 12, 2005 1:01 pm

You've to know 'bout them man..b'coz according to me that biologist and chemist are like "brother".. :lol:
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Postby MrMistery » Mon Jun 13, 2005 7:56 pm

Brothers but not twins... Biologists never blow stuff up.. Unfortunately :evil:
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Postby b_d_41501 » Mon Jun 13, 2005 7:57 pm

You can if you rob the Organic Chemistry lab, lol. :evil:
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Don't be so mean to chemist

Postby victor » Tue Jun 14, 2005 12:17 pm

According to me, sometimes you have to know what is the exact name of some chemical substances. You can't always rely on trade name/trivial name. that's why I suggest bio-students to learn IUPAC.... :lol:
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Postby LrdGeno » Fri Jun 17, 2005 2:06 am

why is it that electron transport involves the binding of oxygen to NAD+? Why not just explain it like that untill it gets to the electron transport chain, because that is where it is actually seperated into H+ and E- right? Or am I just totally lost on the whole process, because it's still alittle bit strange to my nonbiology thinking brain!
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Postby MrMistery » Fri Jun 17, 2005 6:11 pm

You are confused. NAD carries an electron and a proton, turning into NADH. These are taken later through a set of enzymes that produce ATP from the electron's cynetic energy. Eventually the meat oxygen and form water
Putting it a lot simpler than it really is, of course :D :D
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