Identify the INCORRECT statement for a competitive reaction.
Identify the INCORRECT statement for a competitive reaction.
Select an option to attempt
Correct Answer: Option D
Explanation
Competitive inhibition — identifying the INCORRECT statement:In competitive inhibition, the inhibitor competes with substrate for the SAME active site:•is unchanged (with sufficient substrate, inhibitor can be displaced) ✔ CORRECT• Apparentincreases (more substrate needed to achieve half-maximal rate) — this effectively means the apparent affinity (not Kd of inhibitor) decreases ✔•increases ✔ CORRECT• Lineweaver-Burk plot: The y-intercept () stays the same; x-intercept shifts toward zero (becomes LESS negative, i.e., shifts to the RIGHT fromto). Saying it shifts LEFT is INCORRECT.In the Lineweaver-Burk double-reciprocal plot:With competitive inhibitor, slope increases but y-intercept stays constant → x-intercept moves RIGHT (toward 0), NOT left.Answer: Option 4 is the INCORRECT statement.