Front

How does an enzyme speed up a reaction?

Back

lowering the activation energy.

Front

In a chemical reaction, a reactant binds to an enzyme at a region known as the

Back

active site.

Front

What are the substances that are created by a chemical reaction?

Back

Products

Front

The energy needed to start a reaction is called the

Back

activation energy

Front

Once an enzyme has helped a reaction take place, it can then

Back

be reused for another reaction with the same substrates.

Front

What type of macromolecules does an enzyme belong?

Back

Protein

Front

What is the purpose of an enzyme?

Back

speed up reactions

Front

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

Back

Enzyme decrease the activation energy of the reaction.

Front

Based on the graph, what is the optimal temperature for this enzyme? Options: 15^oC, 40^oC, 30^oC, 35^oC

Back

30^oC

Front

Which letter represents the enzyme-substrate complex? Options: A, B, C, D

Back

C