When a substance is reduced something else has to be oxidized. What is being oxi

Question

When a substance is reduced something else has to be oxidized. What is being oxidized in the process of converting acetaldehyde to ethanol? NADH is oxidized Generally carbohydrate metabolism involves oxidizing carbon in order to produce more stable products (and thus releasing free energy). The process of reducing carbon, however is uphill requiring energy. Briefly explain why fermentation takes place when the ultimate purpose is to free up energy rather than use it. plot the results of your experiment, showing all five lines on one graph. You may hand-draw the results of your experiment, showing all five lines on one graph. You may hand-draw the graph on quad paper (downloadable at http://www.printfreegraphpaper.com/use Excel to prepare a graph. You will need to show your data as mL of CO_2 produced (that is, use positive numbers). Be sure to draw a straight line for each set of data points. Attach the graph to the rest of the post-lab answer to hand in.

Explanation / Answer

b) NADH is oxidized to NAD+

c) when there is no suficient oxygen in the cell which acts as terminal electron acceptor cell switches to anarobic metabolism like fermentation toproduce ATP and support the energy requirement of the cells

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