If the concentration of enzyme is kept constant and the amount of substrate is increased to a point where further increase in the substrate concentration does not affect the reaction rate, this phenomenon is due to?
Correct answer: C. All the active sites on enzyme molecules are occupied
- A. The enzymes get denatured at higher substrate concentration
- B. The rate of reaction is indirectly proportional to substrate concentration at this point
- C. All the active sites on enzyme molecules are occupied
- D. All of these options are correct
Explanation
When enzyme concentration is kept constant and the concentration of substrate is gradually increased, a point will come when all the active sites of the enzymes are fully occupied by the substrate and the rate of reaction is no longer affected by increasing the amount of substrate.
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About Enzymes
Enzymes are biological catalysts that lower activation energy without being consumed, and their specificity is explained by the lock and key and induced fit models. Work includes the effects of temperature, pH and substrate concentration on reaction rate, plus competitive and non-competitive inhibition and how these differ.
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