If we add more substrate to an already occurring enzymatic reaction and it has no affect on the rate of reaction, the process is called?
Correct answer: B. Saturation
- A. Denaturation
- B. Saturation
- C. Composition
- D. Inhibition
Explanation
If adding more substrate to an already occurring enzymatic reaction has no effect on the rate of the reaction, the process is called "enzyme saturation" or reaching the "maximum velocity" of the reaction. At low substrate concentrations, the reaction rate increases with increasing substrate concentration. However, once the enzyme is saturated (i.e., all active sites are occupied), adding more substrate does not increase the rate of the reaction, and the reaction has reached its maximum velocity.
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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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