In the process of (translation / replication / differentiation / transcription),
DNA is used as a template for making another type of nucleic acid called (ATPI
pyruvate / RNA / NADPH). The process begins when the enzyme
(RNA polymerase / DNA replicase / ATP synthase / catalase binds to a
region called the (repressor / operator / repressor / anticodon).

In the process of transcription, DNA is used as a template for making another type of nucleic acid called RNA. The process begins when the enzyme RNA polymerase binds to a region called the  promotor.

Explanation:

Transcription is a necessary process for the information stored in the cellular DNA to be used for protein synthesis, which depends on the transcribed RNA.

The enzyme RNA polymerase, specifically type II, is responsible for the synthesis of messenger RNA, which contains the sequence of nitrogenous bases - genetic code - that determine the order in which amino acids bind to form a specific protein. Other RNA polymerases are responsible for the synthesis of transfer and ribosomal RNA.

RNA polymerase must bind to a site on the DNA fragment to be transcribed, which is called a promoter, marking the place where transcription from DNA to RNA begins.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products