A substance that reduces the activity of an enzyme by entering the active site in place of the substrate, whose structure it mimics.Group of answer choicescompetitive inhibitornoncompetitive inhibitor
Question
A substance that reduces the activity of an enzyme by entering the active site in place of the substrate, whose structure it mimics.Group of answer choicescompetitive inhibitornoncompetitive inhibitor
Solution 1
The substance that reduces the activity of an enzyme by entering the active site in place of the substrate, whose structure it mimics, is known as a competitive inhibitor.
Here's why:
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Enzymes have a specific region called the active site, where the substrate, the molecule upon which the enzyme acts, binds.
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A competitive inhibitor is a molecule that has a similar structure to the substrate. Because of this similarity, the competitive inhibitor can bind to the active site of the enzyme, blocking the substrate from binding.
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When the competitive inhibitor binds to the enzyme, it reduces the enzyme's activity because the enzyme can no longer interact with the substrate to catalyze a reaction.
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In contrast, a noncompetitive inhibitor does not bind to the active site of the enzyme. Instead, it binds to a different part of the enzyme, changing the enzyme's shape and preventing the substrate from binding to the active site.
So, the correct answer is competitive inhibitor.
Solution 2
The substance that reduces the activity of an enzyme by entering the active site in place of the substrate, whose structure it mimics, is known as a competitive inhibitor.
Similar Questions
...................inhibitors are molecules/compounds capable of binding to a region of the enzyme other than the active site.UncompetitiveNon-competitiveCompetitiveOver-competitive
Name the inhibition where the end product of the biosynthetic pathway inhibits the activity of the first enzyme.Group of answer choicesCompetitive inhibitionFeedback repressionFeedback inhibitionNoncompetitive inhibitionAllosteric inhibition
Noncompetitive inhibition of enzymes occursMultiple Choicewhen a substance other than the correct substrate binds at the active site of an enzyme.when a substance binds to an enzyme at a site away from the active site.by denaturation of an enzyme.by blocking the production of an enzyme.when two enzymes bind together.
A method of metabolic control in which the end product of a metabolic pathway acts as an inhibitor of an enzyme within that pathway.Group of answer choicescooperativityfeedback inhibitioncompetitive inhibitionallosteric regulation
The site on the enzyme where the noncompetitive inhibitor will bind is called _________Group of answer choicesactive sitebinding siteallosteric siteinhibitor sitefeedback site
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