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Unformatted text preview: and thus increasing enzyme activity. Pyruvate Dehydrogenase (4pts) Full credit answers That the enzyme is caught between two forces: lower ATP after CN addition will activate it, but high levels of NADH will inhibit it. If they say that the high levels of NADH will inhibit the enzyme and this will promote fermentation, this is a full credit answer. (2pt) partial credit answer If they say that the enzymes activity goes down because of high NADH or NADH and ATP and there is no mention of fermentation. If they say that the enzyme will go down to promote fermentation but dont mention NADH If they say that the enzyme activity will increase due to reduced ATP. (1pt) partial credit answer Poorly worded answers when they say the enzyme goes up or down, but the reason they give incorrect (e.g., high levels of ATP activate) If they do not answer the question of what happens after cyanide is added....
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- Spring '08