The enzyme that places corresponding nitrogen bases on a new strand of DNA is called DNA polymerase.

Here's a breakdown:

* DNA polymerase reads the existing DNA strand (the template) and adds complementary nucleotides to the new strand.

* It follows the base pairing rules: adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C).

* This process ensures that the new DNA strand is an exact copy of the original strand.

There are several types of DNA polymerase, each with specific functions in DNA replication, repair, and other processes.