Question

a biochemist measures the activity of an enzyme under three different conditions: temperature, ph and substrate concentration. when the data were presented, each graph was missing a title and did not specify the condition that was used.

a. enter the letter of the graph that shows the results of each condition.
b. enter the values for each condition at which the enzyme most efficiently converts reactants into product

which the graph letter to the proper graph condition

graph m

graph n

graph o

Explanation:

• Graph M: The x - axis values (0 - 14) are typical for pH (pH scale ranges from 0 - 14). Enzymes have an optimal pH, and the graph shows a peak, which is characteristic of enzyme activity vs pH.
• Graph N: The x - axis values (0 - 30) are more in line with temperature (in Celsius). Enzymes have an optimal temperature, and the graph shows a peak, which is characteristic of enzyme activity vs temperature.
• Graph O: Substrate concentration (\([S]\)): As substrate concentration increases, enzyme activity increases until it reaches saturation. The graph shows a curve that levels off, which is characteristic of enzyme activity vs substrate concentration.

Answer:

• Graph M: pH
• Graph N: Temperature (\(^{\circ}C\))
• Graph O: Substrate Concentration \([S]\)