The title of the graph is, Effects of Enzyme A. The label to the left of the graph is, Free Energy. The vertical line axis is an upward-pointing arrow. The label at the bottom of the graph is, Reaction Progress. The horizontal line
axis is right-pointing arrow.
The graph shows two curves. The top curve is a solid line that starts on the horizontal axis and forms a
bell-shaped curve from left to right. The label on the top curve is, without Enzyme A. The bottom curve is a
dashed line that starts on the horizontal axis and forms a bell-shaped curve from left to right. The label on the
dashed-line curve is, with Enzyme A. The title of the diagram is, Enzyme A.
The left side of the diagram shows an open circle and a hexagon inside of an irregular shape. The open circle
and the hexagon are labeled, active sites. The right side of the diagram shows an open circle and a hexagon.
The open circle and the hexagon are labeled, substrates."
15.
Part A. Explain how Enzyme A acts as a catalyst in the reaction. Be sure to include energy and time in your
answer.

Part B. Conditions around an enzyme change and affect the shape of the enzyme's active sites. Predict how
this would affect the enzyme's ability to catalyze the reaction.