Can enzymes work to catalyze another reaction once one is complete?

The seed coat's most important function is to provide a) a nonstressful environment for the megasporangium. b) the means for dispersal. c) dormancy. d) a nutrient supply for the embryo. e) desiccation resistance.

Mutations associated with albinism affect proteins involved in synthesis

What in scientific term why the salty popcorn causes this thirst