medium · Enhanced ACT science
In a study of enzyme kinetics, the reaction rate (V) was measured at different substrate concentrations ([S]):
| [S] (mmol/L) | V (μ mol/min) |
| :--- | :--- |
| 1 | 10 |
| 2 | 18 |
| 4 | 28 |
| 8 | 35 |
As the concentration [S] continues to increase beyond 8 mmol/L, what is the most likely trend for V?
- The rate V will continue to increase linearly according to the formula V = 4[S] + 6.
- The rate V will eventually begin to decrease as the concentration exceeds capacity.
- The rate V will increase exponentially as more substrate becomes available for use.
- The rate V will increase at a diminishing rate toward a horizontal asymptote.
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