Biology Chapter 12.3

What role does DNA polymerase play in copying DNA?

DNA polymerase is an enzyme that joins indivisual nucleotides to produce a new strand of DNA.

What is the role of DNA polymerase in DNA replication?

DNA polymerase joins individual nucleotidesto produce a new strand of DNA.

What could be the result of damaged DNA being replicated?

If damaged DNA is replicated the cell that gets that DNA can change because it is damaged.

Where and in what form is prokaryotic DNA found? Where is the eukaryotic DNA found?

In prokaryotic cells the DNA is found in the form of a single circular chromosome in the cytoplasm. In eukaryotic cells DNA is found in the nucleus.

DNA Polymerase

Principle enzyme involved in DNA replication

Replication

Process of copying DNA prior to cell division

How does DNA replication differ in prokaryotic cells and eukaryotic cells

Replication in most prokaryotic cells starts from a single point and proceeds in two directions until the entire chromosome is copied. In eukaryotic cells, replication may begin at dozens or even hundreds of placed on the DNA molecule, proceeding in both directions until chromosome is completely copied.

Telomere

Repetitive DNA at the end of a eukaryotic chromosome

How is DNA replicated?

The DNA molecule seperates into two strands at the replication fork. Then each strand is used for the attachment of complementary bases.