Isoprene units as used by nature for the elaboration of terpenes can be prepared by 2 major metabolic routes. a) Provide the names of these pathways used for the preparation of isoprene units ( 2 points) - Meva lonate path way - non mera lonate path way b) How could researchers identify these two pathways and how is it possible to differentiate which pathway is used by nature. Support your answer with structures/formulas (4 points)