Option D
They act on a specific type of substrate in a reaction is true of enzymes
Step-by-step explanation:
The enzyme‘s existing position adheres to the substrate. Enzymes increase chemical reactions by inducing substrates collectively in an optimal familiarization, thus constituting a supreme chemical condition for the reaction to transpire.
A reactant in a chemical reaction has denominated a substrate when operated superimposed by an enzyme. There may be one or further substrates for all kinds of enzymes, based on the appropriate chemical reaction. In remarkable reactions, a single-reactant substrate is split down into various products. In others, pair substrates may evolve unitedly to design one more abundant molecule.