Final answer:
Substrate 1 has a greater affinity for the enzyme compared to substrate 2.
Step-by-step explanation:
The Michaelis constant (KM) is a measure of substrate affinity for an enzyme. A lower KM value indicates a greater affinity between the enzyme and the substrate, while a higher KM value indicates a weaker affinity.
In this case, since substrate 1 has a KM of 10mm and substrate 2 has a KM of 100mm, substrate 1 has a greater affinity for the enzyme compared to substrate 2.