I, II, III, and IV

I, III, and IV

I and II

I, II, and III

I, III, IV

I, II, III, and IV

I, III, and IV

I and II

I, II, and III

I, III, IV

tertiary

primary

secondary

quaternary

None of these

tertiary

primary

secondary

quaternary

None of these

It increases the amount of products made

It increases the rate of a reaction

It orients the substrates so they can react

It lowers the activation energy of a reaction

It increases the amount of products made

It increases the rate of a reaction

It orients the substrates so they can react

It lowers the activation energy of a reaction

By lowering the activation energy required to begin the reaction

By providing additional energy to the system

By altering the net change in free energy of the reaction

By increasing the substrate concentration

By lowering the activation energy required to begin the reaction

By providing additional energy to the system

By altering the net change in free energy of the reaction

By increasing the substrate concentration

It inhibits channels in the cerebellum

It blocks gates in striated muscle cells

It attacks neural synapses in the brain stem

It degrades myelin sheaths in the motor cortex

It inhibits acetylcholine transmission in the spinal cord

Enzymes are consumed and depleted over the course of a reaction.

Enzymes increase the reaction rate.

Enzymes lower the activation energy of a reaction.

Enzymes do not alter the equilibrium of the reaction.

Biological catalysts do not have to be proteins.