Why is the concentration of anenzyme\'s substrate in a cell typically the same a

Question

Why is the concentration of anenzyme's substrate in a cell typically the same as the Km of theenzyme (choose the best/most correct answer below,please!) a) since Kcat/KMis a measure of catalytic efficiency, the enzyme is most efficientwhen the [substrate] is equivalent to KM b)Since KM = KD for most enzymes and[ES] is dependent on [substrate], the enzyme-substrate complex isadequately formed in vivo when the cellular [substrate] issimilar to KM c) The KM = KD for most enzymes, when[substrate] is similar to KM the rate of the enzymereaction is maximal The KM of an enzyme is a measure of thefavorability of the reaction, and when the [substrate] is similarto KM the reaction has a -G and is thereforefavorable Why is the concentration of anenzyme's substrate in a cell typically the same as the Km of theenzyme (choose the best/most correct answer below,please!) a) since Kcat/KMis a measure of catalytic efficiency, the enzyme is most efficientwhen the [substrate] is equivalent to KM b)Since KM = KD for most enzymes and[ES] is dependent on [substrate], the enzyme-substrate complex isadequately formed in vivo when the cellular [substrate] issimilar to KM c) The KM = KD for most enzymes, when[substrate] is similar to KM the rate of the enzymereaction is maximal The KM of an enzyme is a measure of thefavorability of the reaction, and when the [substrate] is similarto KM the reaction has a -G and is thereforefavorable c) The KM = KD for most enzymes, when[substrate] is similar to KM the rate of the enzymereaction is maximal The KM of an enzyme is a measure of thefavorability of the reaction, and when the [substrate] is similarto KM the reaction has a -G and is thereforefavorable

Explanation / Answer

b)Since KM = KD for most enzymes and [ES] isdependent on [substrate], the enzyme-substrate complex isadequately formed in vivo when the cellular [substrate] issimilar to KM

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