List the 7 participants in Metabolic Reactions and then describe the 2 different types of metabolic pathways found in biological systems. Solution Answer: Seven participants in metabolic reactions: Two types of metabolic pathways: ICatabolic pathwayAnabolic pathwayPathway in which a substrate is broken into simpler molecule.Releases energy.Eg. Cellular respiration.Pathway in which new complex product is made from simpler substrate .Consumes energy.Eg. Synthesis of macromolecules, like protein..