Question

what enzyme reads the nucleotide code and matches the appropriate nucleotide base in place after the dna strand has been split?
helicase
dna polymerase
hydrogenase
ligase

Explanation:

• Helicase unwinds the DNA double - helix, not involved in base - matching after strand split.
• DNA polymerase reads the nucleotide code on the template strand (after DNA strand is split) and adds the appropriate complementary nucleotide base.
• Hydrogenase is involved in hydrogen metabolism, not DNA replication.
• Ligase joins DNA fragments, not in base - matching during replication.

Answer:

DNA polymerase