Enzymes

The area that the substrate fits into on the enzyme is called the:

• Active Site

• Allosteric Site

• DiSulphide Bridge

• β-Pleated Sheet

Enzymes catalyze reactions by ___________ Activation Energy.

• Increasing

• Decreasing

Changes in pH and temperature can ___________________ an enzyme which causes it to lose its shape and affects its function.

• puncture

• denature

• double

• delete

What is the purpose of an enzyme?

• control how many reactions occur

• raise activation energy

• give permission for the reaction

• speed up chemical reactions

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

• Enzymes increase the energy of the reactants.

• Enzymes decrease the energy level of the products.

• Enzyme decrease the activation energy of the reaction.

• Enzymes reverse the direction of the reaction.