JEE Main 2021 — Chemistry In Everyday Life Question with Solution
From: JEE Main 2021 (Online) 17th March Morning Shift
Question
Choose an option
Show full solutionCorrect option: B
Step-by-step explanation
Allosteric inhibitor combines at allosteric site and not the active site.
Drugs inhibit the attachment of substrate on active site of enzymes in two different ways :
(i) Drugs compete with the natural substrate for their attachment on the active sites of enzymes. Such drugs are called competitive inhibitors.
(ii) Some drugs do not bind to the enzyme's active site. These bind to a different site of enzyme which is called allosteric site. This binding of inhibitor at allosteric site changes the shape of the active site in such a way that substrate cannot recognise it.This is also called non-competitive inhibitor.
Non-competitive inhibitor changes the active site of enzyme after binding at allosteric site.
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This is a previous-year question from JEE Main 2021, covering the Chemistry In Everyday Life chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.