Microbes in Human WelfareMedium
Question
The figure given below show three velocitysubstrate concentration curves for an enzyme reaction. What do the curvesa, b and c depict respectively ?
Options
A.a - normal enzyme reaction.
b - competitive inhibition.
c - non-competitive inhibition.
b - competitive inhibition.
c - non-competitive inhibition.
B.a - enzyme with an allosteric modulartor added.
b - normal enzyme activity
c -competitive inhibition.
b - normal enzyme activity
c -competitive inhibition.
C.a - enzyme with an allosteric stimulartor
b - competitive inhibitor added.
c - normal enzyme reaction.
b - competitive inhibitor added.
c - normal enzyme reaction.
D.a - normal enzyme reaction.
b - non-competitive inhibitor added.
c - allosteric inhibitor added.
b - non-competitive inhibitor added.
c - allosteric inhibitor added.
Solution
The effect of a competitive inhibition is reversed by increasing substrate concentraion. At a sufficiently high substrate concentration.the reaction velocityreaches the Vmax observed in the absence of inhibitor decreases the Vmax of the reaction i.e. it can not be overcome by increase in substrate concentration.
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