The enzyme pictured below is shown in two configurations,A (open)and B (closed).Upon binding substrate in the active site,the enzyme converts the structure shown in B.Which of the following is true based on the given information?
A)The enzyme requires a high concentration of substrate to function
B)This example exemplifies the "lock-and-key" model.
C)This enzyme must require ATP.
D)This example exemplifies the of "induced fit" model.
E)None of these are true.

Question

The enzyme pictured below is shown in two configurations,A (open)and B (closed).Upon binding substrate in the active site,the enzyme converts the structure shown in B.Which of the following is true based on the given information? 
A)The enzyme requires a high concentration of substrate to function 
B)This example exemplifies the "lock-and-key" model. 
C)This enzyme must require ATP. 
D)This example exemplifies the of "induced fit" model. 
E)None of these are true.

Quizplus · Accepted Answer

The given information suggests that the enzyme changes its shape upon binding substrate, which is the basis of the induced fit model. Choice A is incorrect because the given information does not provide any indication of the substrate concentration required for the enzyme to function. Choice B is incorrect because the lock-and-key model refers to a specific complementary fit between the enzyme and substrate, which is not described in the given information. Choice C is incorrect because there is no evidence that the enzyme requires ATP. Therefore, the best choice is D, as the given information supports the induced fit model.

The Enzyme Pictured Below Is Shown in Two Configurations,A (Open)and