Km is increased, but Vmax remains same. The enzyme inhibition is

Features of non-competitive inhibition Inhibitor have no structural resemblance to substrate. Mostly irreversible (Except a few reversible non-competitive inhibition). Excess substrate do not abolish the inhibition. Km remains the same. Vmax decreases. Features of competitive inhibition Inhibitor will be structural analogue of substrate. Reversible . Excess substrate abolish the inhibition. Km increases. Vmax remains the same.