Enzymes can be regulated in many ways. Which of the following is not an example of allosteric enzyme regulation?
a) A molecule binds to enzyme and stabilizes a certain form
b) It takes one oxygen molecule to bind to hemoglobin to increase its affinity of oxygen
c) In an excess of ATP, ATP binds to enzymes in the citric acid cycle and cause the shape of the active site to change.
d) A vitamin binds to an enzyme and activates it.
e) A molecule that is not the substrate binds to the active site of the enzyme.

Question

Enzymes can be regulated in many ways. Which of the following is not an example of allosteric enzyme regulation?
a) A molecule binds to enzyme and stabilizes a certain form
b) It takes one oxygen molecule to bind to hemoglobin to increase its affinity of oxygen
c) In an excess of ATP, ATP binds to enzymes in the citric acid cycle and cause the shape of the active site to change.
d) A vitamin binds to an enzyme and activates it.
e) A molecule that is not the substrate binds to the active site of the enzyme.

kayne · Answer

I think that you should understand what allosteric enzymes are. They are enzymes that change their shape when an effector is bound to them. In this way, their activities are regulated. Taking into account these pieces of information, what could be the answer to this question?

adamconner · Answer

it would be B?

kayne · Answer

Yes @adamconner! Because by elimination it is the only option whereby the oxygen molecule doesn't bind to the enzyme to bring about a change in the latter.

adamconner · Answer

ok thanks!