[问答题]
Many enzymatic reactw0 onfd3fxp. 7ions happen as pathways involvin: xhd w,qw1sxjbw(cd52u:, f eg multiple steps and multiple5,2fww :ec w:1,jsxbd hxu( qd enzymes.
1.Describe how enzymes catalyze reactions.
2.Outline the advantages of enzyme-substrate specificity.