Which system is most likely to produce the stimulus-response curve shown here,where T_i is the inhibition threshold,and T_a is the activation threshold?
In the systems shown below,the concentration of molecule 3 represents the stimulus,and the concentration of molecule 2 is the response.Molecule 1 is a substrate of molecule 3.Molecule 4 is an inactive form of molecule 3.Molecule 2 activates molecule 5.

Question

Which system is most likely to produce the stimulus-response curve shown here,where T_i is the inhibition threshold,and T_a is the activation threshold?

Which system is most likely to produce the stimulus-response curve shown here,where T<sub>i</sub> is the inhibition threshold,and T<sub>a</sub> is the activation threshold? In the systems shown below,the concentration of molecule 3 represents the stimulus,and the concentration of molecule 2 is the response.Molecule 1 is a substrate of molecule 3.Molecule 4 is an inactive form of molecule 3.Molecule 2 activates molecule 5. A) B) C) D) E)

In the systems shown below,the concentration of molecule 3 represents the stimulus,and the concentration of molecule 2 is the response.Molecule 1 is a substrate of molecule 3.Molecule 4 is an inactive form of molecule 3.Molecule 2 activates molecule 5.

Quizplus · Accepted Answer

The shape of the curve suggests that the system exhibits sigmoidal behavior, which is typical of enzymes that undergo allosteric regulation. System C shows allosteric regulation, with molecule 2 acting as an activator and molecule 4 as an inhibitor, leading to a sigmoidal response curve. The activation threshold and inhibition threshold in the graph also match the behavior of System C.

Which System Is Most Likely to Produce the Stimulus-Response Curve