(A)[1]
The energy barrier, lowered by enzyme action, that reactants must overcome before products can be made.
(B)[1]
The enzyme action mechanism in which the active site is partly flexible and alters shape to bind the substrate.
(C)[1]
A term used for a protein, including an enzyme, whose tertiary or quaternary structure produces an approximately spherical form.
(D)[1]
The word used for enzymes that work outside cells.
(E)[1]
The substrate concentration at which an enzyme reaches half its maximum rate of reaction.