An enzyme that copies dna to make a molecule of rna is:.

An enzyme that copies DNA to make a molecule of RNA is RNA polymerase.

RNA polymerase

Explanation:

RNA polymerase has many important roles inside of an organism and is a very complex enzyme. One of the most common roles "RNA polymerases" has, is that it is able to copy DNA to then make an RNA molecule. Another common role the RNA polymerase has, is that it helps maintain the organism's metabolism. Which means the enzyme itself helps the chemical processes within an organism be completed in order to keep that organism from dying.

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