Enzyme Kinetics and Regulation — Prelims Questions

Which of the following statements is INCORRECT regarding competitive enzyme inhibition?

An enzyme exhibits a hyperbolic plot of $V_0$ versus $[S]$. When an inhibitor is added, the $V_{max}$ decreases, but the $K_m$ remains unchanged. Which type of inhibition is this?

Which of the following regulatory mechanisms involves the end-product of a metabolic pathway inhibiting an enzyme early in the same pathway?

An enzyme follows Michaelis-Menten kinetics. If the substrate concentration is equal to $K_m$, what is the initial reaction velocity ($V_0$) in terms of $V_{max}$?

Which of the following statements is TRUE regarding allosteric enzymes?

A Lineweaver-Burk plot shows a series of parallel lines when an inhibitor is added at different concentrations. What type of inhibition is this?