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The given graph shows the effect of substrate concentration on the rate of reaction of the enzyme green-gram-phosphatase. What does the graph indicate?

  1. A
    The rate of reaction is independent of substrate concentration at all levels.
  2. B
    The rate of reaction increases linearly at low substrate concentration and reaches a plateau (Vmax) at high concentration.
  3. C
    The enzyme is inhibited by its own substrate.
  4. D
    The reaction follows zero-order kinetics from the start.

Solution & Step-by-step Explanation

The graph shows a characteristic Michaelis-Menten hyperbolic curve. At low substrate concentrations, the rate of reaction is directly proportional to concentration (first-order kinetics). As the active sites of all enzyme molecules become saturated at high substrate levels, the reaction rate reaches a maximum velocity () and becomes independent of further increases in concentration (zero-order kinetics).

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The given graph shows the effect of substrate concentration on the rate of reaction of the enzyme green-gram-phosphatase. What does the graph indicate?
A
The rate of reaction is independent of substrate concentration at all levels.
B
The rate of reaction increases linearly at low substrate concentration and reaches a plateau (Vmax) at high concentration.
C
The enzyme is inhibited by its own substrate.
D
The reaction follows zero-order kinetics from the start.

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BiochemistryEnzymesSubstrate Concentration

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