Question

When the velocity of enzyme activity is plotted against substrate concentration,which of the following is obtained?

Hyperbolic curve
Parabola
Straight line with positive slope
Straight line with negative slope​

Answer 1

From the given question the correct answer is:

A. hyperbolic curve

at low substrate concentration, the rate of a reaction is determined by the rate of formation of an enzyme-substrate complex.

Answer 2

Answer:

When the velocity of enzyme activity is plotted against substrate concentration,the curve obtained is hyperbolic.

Explanation:

• Enzymes are proteins and are biological catalyst.
• The reaction between enzyme and substrate is best studied through a lock and key model.
• The enzyme and the substrate initially form an enzyme-substrate complex which decomposes in the next step to form products.
• When the concentration of substrate is less,the rate of the enzyme reaction is dependent on the concentration of enzynme-substrate complex.
• Hence if we draw a plot of velocity of enzyme activity against substrate concentration,a hyperbolic curve will be obtained.