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Which outcome occurs in an enzymatic bioreactor when substrate concentration nears Ks?

A)Reaction rate approaches Vmax / 2
B)Enzyme active sites become denatured
C)Product inhibition reduces reaction rate
D)Substrate oxidation produces excess heat

💡 Explanation

When substrate concentration approaches the Michaelis constant (Ks), the reaction rate nears half of Vmax because the enzyme active sites are only partially saturated according to Michaelis-Menten kinetics; therefore the rate slows, rather than denaturation or inhibition causing related effects under substrate starvation.

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