The Michaelis-Menten constant, $K_m$, is the substrate concentration at which an enzyme operates at half of its maximum rate. Which statement is correct when the $K_m$ value is low?
- AThe enzyme has a low affinity for the substrate and the quicker the reaction will proceed to its maximum rate.
- BThe enzyme has a low affinity for the substrate and the slower the reaction will proceed to its maximum rate.
- CThe enzyme has a high affinity for the substrate and the quicker the reaction will proceed to its maximum rate.
- DThe enzyme has a high affinity for the substrate and the slower the reaction will proceed to its maximum rate.