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Wiley PLUS 201620 SP x y Id WileyPLUS c Secure https://edugen wileyplus com/edugen/Itirmain uni Wiley PLUS Karp, cell and Molecular Biology, Se, custom for old Dominion University Help I System ignment Open Assignment Chapter o3, Testbank Question 25 You are observing an enzyme driven reaction. To the reaction mixture you add a chemical x which inhibits the reaction. If you add more substrate, the reaction rate approaches the vmax of the uninhibited reaction. Furthermore, the structure of to the natural substrate. What kind of inhibitor is x? xis similar Question Attempts: o of 1 used SAVE FORurER SIARHITANSWER 2000-2017 by John Wiley Sons, or related companies. All rights reserved. Results by Study

Explanation / Answer

Answer - X will be a competitive inhibition which have a tendency to occupy enzyme active site , because its structure is similar to substrate. If both inhibitor and substrate are in same amount in reaction mixture the inhibitor has a probability to occupy active site as the substrate.so in this case inhibitor bind to the active site of enzyme and prevent substrate bind to it and thus not allow enzyme catalysed reaction to proceed.

This problem can overcome with the large concentration of substrate which has high probability to occupy active site as compare to inhibitor and substrate will over compete with inhibitor.The apperent Km value will increase as it takes high concentration of substrate to reach Km point or half the value of Vmax .

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