Neco 2018 Biology Question 31
Practice objective / multiple choice question 31 from the 2018 Neco Biology examination.
In an experiment measuring the activity of enzyme X, the following observations were made: (i) In the absence of any inhibitor, the enzyme follows Michaelis-Menten kinetics with \(V_{\max}=120\) \(\mu\)mol·min\(^{-1}\) and \(K_{m}=30\) \(\mu\)M. (ii) When 10 \(\mu\)M of an unknown inhibitor I is added, the maximum rate remains 120 \(\mu\)mol·min\(^{-1}\) but the substrate concentration required to reach half‑maximal velocity increases to 60 \(\mu\)M. (a) Identify the most likely mode of inhibition (competitive, non‑competitive, or uncompetitive). (b) Calculate the inhibition constant \(K_{i}\) for inhibitor I.
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About This Question
This is Neco 2018 Biology Question 31. It is one of the objective questions from the 2018 Neco Biology examination.
Difficulty level: Hard .
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