_____ competes with the normal substrate for the active site of the enzyme. comp
ID: 163478 • Letter: #
Question
_____ competes with the normal substrate for the active site of the enzyme. competitive inhibitor Noncompetitive inhibitor Complete inhibitor Incomplete inhibitor During _____ phosphorylation a high energy phosphate from an intermediate in catabolism is added to ADP. Photophosphorylation Oxidative Substrate level Reductive _____ occurs when the end product of a metabolic pathway inhibits an enzyme's activity in the pathway. Feedback inhibition Competitive inhibition Noncompetitive inhibition Feedlock inhibition During _____ phosphorylation energy is released as electrons are passed to a series of electron acceptors and finally to oxygen or another inorganic compound. Photophosphorylation Oxidative Substrate level ReductiveExplanation / Answer
Answer : The correct option is A (competitive inhibitor)
Explanation : Competitive inhibitor competes and binds to the enzyme active site since it is structurally similar to enzymes substrate binds to enzyme active site. When an enzyme that follows Michaelis-Menten kinetics is treated with a competitive inhibitor, its Km increases (affinity towards substrate decreases) and Vmax unaffected. A competitive inhibitor diminishes the rate of catalysis by reducing the proportion of enzyme molecules bound to substrate.
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