Sections 2.4 & 2.5 CHEMICAL REACTIONS & ENZYMES. 2.4 Chemical Reactions Key Concept: Life depends on chemical reactions.
BRN 5H 2 1.What number represents the coefficient? 2.What number represents the subscript? 3.What element is represented by the letter “H”? 4.How many.
Enzymes. Pre – Key Point 1: Chemical Reactions Reactants Products REACTANTSPRODUCTS.
Chemical Reactions & Enzymes
