Question

1. amylase is an enzyme that catalyzes the digestion of carbohydrates. the graphs in model 2 provide data on several factors that affect the function of amylase in the body.

a. the relationship of which two variables is illustrated in graph a of model 2?
b. the relationship of which two variables is illustrated in graph b or model 2?
c. the relationship of which two variables is illustrated in graph c or model 2?

1. refer to model 2.

a. what is the optimum temperature for amylase?
b. what is the biological significance of the temperature at which the amylase - catalyzed reaction is fastest?
enzymes and cellular regulation

Explanation:

Step1: Identify variables in graph A

Graph A has temperature on x - axis and rate of reaction on y - axis.

Step2: Identify variables in graph B

Graph B has enzyme concentration on x - axis and rate of reaction on y - axis (with substrate in excess).

Step3: Identify variables in graph C

Graph C has substrate concentration on x - axis and rate of reaction on y - axis (with enzyme concentration constant).

Step4: Find optimum temperature in graph A

The peak of the curve in graph A gives the optimum temperature. It appears to be around 40°C.

Step5: Explain biological significance

The temperature at which amylase - catalyzed reaction is fastest (optimum temperature) is the temperature at which the enzyme's active site has the best shape - substrate fit, maximizing the rate of carbohydrate digestion.

Answer:

12.
a. Temperature and rate of reaction
b. Enzyme concentration and rate of reaction
c. Substrate concentration and rate of reaction
13.
a. Approximately 40°C
b. It is the temperature at which the enzyme's active - site has the best shape - substrate fit, maximizing the rate of carbohydrate digestion.