1. If the diagram below represents a catabolic pathway, and enzyme 1 requires NAD +, a) what type of reaction does enzyme 1 catalyze? b) what do coenzymes provide during enzymatic reactions? c) what are the roles of stoichiometric and catalytic coenzymes/cofactors? Enzyme 1 Enzyme 2 A B C W X Y Z

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Metabolic pathways

Metabolism is defined as the group of life-supporting, enzyme-mediated chemical reactions in organisms. A metabolic pathway is a set of these chemical reactions that involve anabolism (synthesis of complex biomolecules) and catabolism (breakdown of biomolecules into small molecules) that occur inside a cell. Metabolites are the reacting substances, products, and intermediate substances of an enzymatic process that are altered by a series of chemical events catalyzed by enzymes.