I: Z

II: A

I: Z

II: Z

I: A

II: A

I: Z

II: B

I: A

II: C

They increase reaction rate

They increase reaction activation energy

They are changed during the course of the reaction

They are always in the same phase as the reactants

They raise the equilibrium product concentration

Lowering the activation energy

Making the reactants less energetically stable

Making the products more energetically stable

Making the products less energetically stable

Elevating the temperature of the reaction

Enzymes increase the equilibrium product concentration

Enzymes decrease the activation energy of a reaction

Enzymes form complexes with their substrates

Enzymes interact with substrates through active sites

None of these

They cannot be in a separate phase than the reactants.

They increase reaction rate.

They are regenerated in the reaction.

They lower the activation energy needed for the reaction to proceed.

Catalysts speed up the reaction without being consumed

Catalysts slow down the reaction without being consumed

Catalysts increase the amount of product produced by the reaction

Catalysts decrease the amount of product produced by the reaction

Catalysts increase the amount of reactant available

Catalysts decrease the activation energy of both forward and reverse reactions

Catalysts decrease the of the reaction

Catalysts decrease the activation energy of the fast step of a reaction

Catalysts are included in the overall net reaction equation

It lowers the energy required to have reactants react with one another

It increases the amount of product created in a reaction

It increases the kinetic energy of the reactants, resulting in more collisions

It lowers the internal energy of the products, resulting in more stable bonds