A Velocity Curve (V Vs

Question

A velocity curve (V vs. [S]) for a typical allosteric enzyme will be
A) a rectangular hyperbola.
B) a sigmoid curve.
C) a straight line.
D) a parabola.
E) none of these

Accepted Answer

A sigmoid curve is most commonly associated with allosteric enzymes. Allosteric enzymes have multiple binding sites, so as substrate concentration increases, the likelihood of a conformational change increases, leading to a sigmoidal velocity curve.