DNA Polymerase III adds nucleotides during DNA replication.
DNA Polymerase I also adds nucleotides (to a lesser extent). DNA Pol I is responsible for replacing the primers with dNTPs, these sections are then joined to the rest by DNA Ligase.
DNA Polymerase I does both proofreading as part of DNA replication.
DNA polymerase is what I think you want as an answer.
helicase
Telomerase is an enzyme that adds nucleotides to the ends of telomeres in chromosomes. They do not solve any problems in replication
RNA Polymerase
DNA Polymerases DNA Polymerases
DNA Polymerase is the enzyme which adds new nucleotides during replication.
DNA polymerase III can add nucleotides only to a chain of nucleotides that is alreadypaired with the parent strands. Hence, DNA polymerasecannot link the first nucleotides in a newly synthesizedstrand. Instead, another enzyme, an RNA polymerasecalled primase, constructs an RNA primer, a sequence ofabout 10 RNA nucleotides complementary to the parentDNA template. DNA polymerase III recognizes the primerand adds DNA nucleotides to it to construct the new DNAstrands. The RNA nucleotides in the primers are then replacedby DNA nucleotides.
The primase
RNA polymerase is the enzyme that adds and links complementary RNA nucleotides during transcription
RNA Polymerase is the enzyme responsible for adding RNA nucleotides to make mRNA.
DNA and RNA polymerase
The enzyme that adds nuclleotides to exposed nitrogen bases is DNA polymerase. This is how DNA can be replicated or repeated in the cell cycle.
Telomerase is an enzyme that adds nucleotides to the ends of telomeres in chromosomes. They do not solve any problems in replication
RNA Polymerase
DNA Polymerases DNA Polymerases
DNA Polymerase is the enzyme which adds new nucleotides during replication.
DNA polymerases are the enzymes responsible for joining DNA nucleotides together. In Prokaryotes - DNA Pol III is the enzyme which adds nucleotides to the new strand during DNA replication. DNA Pol I is responsible for replacing the primers with DNA nucleotides.
DNA polymerase III can add nucleotides only to a chain of nucleotides that is alreadypaired with the parent strands. Hence, DNA polymerasecannot link the first nucleotides in a newly synthesizedstrand. Instead, another enzyme, an RNA polymerasecalled primase, constructs an RNA primer, a sequence ofabout 10 RNA nucleotides complementary to the parentDNA template. DNA polymerase III recognizes the primerand adds DNA nucleotides to it to construct the new DNAstrands. The RNA nucleotides in the primers are then replacedby DNA nucleotides.
DNA polymerase 1,2,3 are enzymes involved in adding nucleotides during replication