When the substrate is present in excess, doubling the concentration of enzyme will
- A. approximately double the rate of the reaction
- B. halve the rate of the reaction
- C. leave the rate unchanged
- D. denature the substrate
Explanation
With abundant substrate every added enzyme molecule finds work at once, so rate is directly proportional to enzyme concentration. The rate only becomes independent of enzyme amount when substrate runs short and active sites compete for it.
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