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Phosphofructoisomerase Is Classified as an Isomerase Enzyme, and Pyruvate Dehydrogenase

Question 186

Multiple Choice

Phosphofructoisomerase is classified as an isomerase enzyme, and pyruvate dehydrogenase is classified as an oxidoreductase enzyme.Which feature do both enzymes share?


A) They share a similar concentration of substrate corresponding to saturating levels for 1 nanomole of enzyme.
B) They share the same shape of the curve when enzyme activity is plotted against substrate concentration.
C) They share the same position of the peak on a graph of enzyme activity versus pH.
D) They share the same temperature at which the enzyme begins to denature as heat is gradually added.
E) They share the same dissociation constant for substrate binding.

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