Which one of the following statements correctly defines active site? a: the active site is a site on the enzyme molecule where specific substrate molecules bind. b: the active site is a site on the substrate molecule where specific enzyme molecules bind. c: the active site is a site on the substrate molecule where specific product molecules bind.

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs