Question

What is Vmax? a) The concentration of S at which the enzyme becomes saturated. b) The...

What is Vmax?

a) The concentration of S at which the enzyme becomes saturated.

b) The velocity at which enzyme E is saturated with substrate S.

c) The initial velocity of the enzyme at v=[S].

d) One half of the limiting enzymatic rate.

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Answer #1

Vmax is maximum velocity

Vmax is

b) the velocity at which enzyme E is saturated with substrate S.

As the substrate concentration increases, the concentration of substrate that is bound to enzyme also increases. This increases the velocity (V). With increase in substrate concentration, the velocity increases and then reaches a maximum value (Vmax). This is the velocity at which enzyme E is saturated with substrate S. There is no further increase in velocity as no more substrate can bind to enzyme.

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