Question

The binding of a compound to an enzyme is observed to slow down or stop the rate of the reaction catalyzed by the enzyme. Increasing the substrate concentration reduces the inhibitory effects of this compound. Which of the following could account for this observation? View Available Hint(s) The binding of a compound to an enzyme is observed to slow down or stop the rate of the reaction catalyzed by the enzyme. Increasing the substrate concentration reduces the inhibitory effects of this compound. Which of the following could account for this observation? A. The compound is a competitive inhibitor.B. The compound causes a cofactor to be lost from the enzyme. C.The compound is an allosteric inhibitor. D. The compound reduces disulfide bonds, causing the enzyme molecules to partially unfold. E. The compound forms a covalent bond with one of the amino acid residues needed for enzyme activity.

Answer 1

Answer:

The correct answer is A the compound is a competitive inhibitor

Explanation:

Competitive inhibitor competes with the substrate to bind to the active site of the target enzyme and after binding to the active site the inhibitor slow down or stop the reaction catalyzed by that enzyme.

          Competitive inhibitor basically effects the Km value of the enzyme thus decreasing the activity of the later.

           Increasing the substrate concentration displace the inhibitor from the enzyme"s active site thus reducing the inhibitory effects of the later thus increasing the activity of the enzyme.

Answer 2

An organic catalyst that takes part in a reaction to increase the rate of reaction is called an enzyme. The compound is a competitive inhibitor.

What is a competitive inhibitor?

An inhibitor resembling a normal substrate binding to the active site of the enzyme preventing the original substrate to form a complex is called a competitive inhibitor.

They compete with the original substrate of the reaction and binds to the active site of the enzyme.  It then slows or inhibits the rate of the reaction carried by that enzyme.

Competitive inhibitor affects the Km value and decreases it by binding to the active site of the enzyme inhibiting the formation of the substrate enzyme complex.

Competitive inhibitors can be replaced by increasing the amount of the substrate so that the binding between the substrate and active site forms the complex and the reaction occurs.

Therefore, option A. the compound is a competitive inhibitor.

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