In enzyme kinetics lab, what are independent and dependent variables? How do you know if they are discrete, continuous, or ordinal?

In enzyme kinetics lab, the independent variable is typically the concentration of the substrate, while the dependent variable is the rate of the reaction. The concentration of the enzyme is usually held constant. The independent variable, substrate concentration, is continuous in nature since it can take on any value within a certain range. The dependent variable, rate of reaction, is also continuous and can have a range of values. However, it may also be considered ordinal since we can rank the reactions from slow to fast. Overall, the variables in enzyme kinetics lab are typically continuous in nature, but may have some ordinal qualities as well.