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Consider your plot of 1/V against 1/[S] for chymotrypsin incubated in various concentrations of compound A. The calculated Vmax at O UM compound A is relatively similar to the Vmax at 50 UM. The calulated Km at O UM compound A is significantly different to the Km at 50 UM. Overall, with increasing concentrations of compound A the Vmax is constant v while the Km This suggests that compound A is a V inhibitor of chymotrypsin, as only the increases is constant V changes. decreases eweaver-Burk plot of the chymotrypsin enzyme