Enzymes

Y; the activation energy (${\text{E}}_{\text{A}}$‍) is greater in an uncatalyzed reaction

X; the activation energy (${\text{E}}_{\text{A}}$‍) is greater in an uncatalyzed reaction

Y; the activation energy (${\text{E}}_{\text{A}}$‍) is reduced in an uncatalyzed reaction

X; the activation energy (${\text{E}}_{\text{A}}$‍) is reduced in a catalyzed reaction