試題詳解

59. Which of the following statements about kcat is correct?
(A) kcat is an indicator of the purity of an enzyme preparation.
(B) kcat represents the substrate concentration required for an enzyme to reach50% of its maximum reaction velocity.
(C) kcat reflects the half-life of an enzyme.
(D) kcat represents the pH value at which the product dissociated from the enzyme.
(E) kcat is defined as the number of substrates converted to products per enzyme molecule per unit time when the substrate concentration is saturated.