Acetaldehyde

That should be NAD H as a required cofactor for the reduction. NAD would be used for the reverse reaction (ethanol oxidation to acetaldehyde).

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... product is CH3CH2OH. This is not a typical bio chemical reaction involving ethanol, though. More typical would be the ADH-catalyzed reduction of acetaldehyde to ethanol with NAD as a required co-factor. (ADH = alcohol dehydrogenase) Should also point out that the chemical reaction you've listed ...

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... from glycolysis; how do the muscle cells gain NAD+ though? 4. In fermentation by yeast, the final energy rich organic molecule is: a) pyruvate b) acetaldehyde c) alcohol d) carbon dioxide Initially, I answered c) but a) was the correct choice. I do not understand why pyruvate is the final energy-rich ...

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... Formaldehyde and Hydrogen Cyanide formed. As the compounds were heated further they reacted to form even more complex chemical molecules such as acetaldehyde, glycine, and ribose (a sugar). Inestingly, as you may know, some of these molecules are essential to life and are found in our bodies. ...

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... papain has metal prosthetic groups. You can look that up and you will have your answer. When acid is added to the rxn: ethanol + Nad+ <--> acetaldehyde + NADH + H+ the following is expected to happen: Increases the conc. of NADH My guess is it would increase the rate of the backwards reaction, ...

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