First order kinetics is described as: A. Enzyme at maximum velocity due to exces

Question

First order kinetics is described as:

A.

Enzyme at maximum velocity due to excess substrate concentration

B.

Decreasing substrate concentration with increasing product formation

C.

Decreasing enzyme concentration with decreasing product formation

D.

Enzyme at Km and steady production of product

A.

Enzyme at maximum velocity due to excess substrate concentration

B.

Decreasing substrate concentration with increasing product formation

C.

Decreasing enzyme concentration with decreasing product formation

D.

Enzyme at Km and steady production of product

Explanation / Answer

Answer: Decreasing substrate concentration with increasing product formation

When [S]<<Km  

v=Vmax[S]Km

This means that the rate and the substrate concentration are directly proportional to each other. The reaction is first-order kinetics.

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