Question

An allosteric enzyme:

a. has an active site that binds to the substrate and an allosteric site that binds to the product.
b. allows the movement of molecules and ions from one part of the cell to another.
c. catalyzes both oxidation and reduction reactions.
d. raises a reaction's activation energy so that the rate of the reaction declines.
e. allows a substance other than the substrate to bind to the enzyme, thereby activating or

Answer 1

An allosteric enzyme contains an allosteric site that can be bound by effectors, which regulate the enzyme's activity. Allosteric inhibitors bind to the enzyme away from the active site and decrease the affinity of the active site for substrate binding. Therefore, the correct answer is c.

Step-by-step explanation:

An allosteric enzyme is an enzyme that contains a site other than the active site, called the allosteric site. This site can be bound by molecules called effectors, which can regulate the enzyme's activity. When an effector binds to the allosteric site, it causes a conformational change in the enzyme that affects substrate binding and reaction rates.

Allosteric inhibitors are a type of effector that binds to the enzyme away from the active site and induces a conformational change that decreases the affinity of the active site for substrate binding. This reduces or prevents substrate binding and decreases the rate of the reaction.

Therefore, the correct answer is c. Binds to an enzyme away from the active site and changes the conformation of the active site, decreasing its affinity for the substrate. Therefore, the correct answer is c. catalyzes both oxidation and reduction reactions.