Arginase is an enzyme that is sometimes used to test for the level of kidney function. The assay calls for mixing the enzyme with manganese chloride and 0.5 ml of 0.1 M arginine solution and glycine buffer.
Two scientists performed the assay on the same sample of arginase but one used 0.5 ml of 1.0 M arginine instead of the 0.1 M arginine that the assay calls for; all other parts of the assay were done in the same way. Both scientists calculated the same activity.
What does this suggest about the concentration of arginine used in the assay in relation to the Michealis constant for the enzyme?