Chapter 12.3

Question 1

What role does DNA polymerase play in copying DNA?

Answer 1

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

Question 2

How does DNA replication differ in prokaryotic cells and eukaryotic cells?

Answer 2

In eukaryotic cells, replication may begin at dozens or even hundreds of places on the DNA molecule, proceeding in both directions until each chromosome is completely copied.

Eukaryotic cells, starts from a single point and proceeds in two directions until the entire chromosome is copied.

Question 3

Replication

Answer 3

Before a cell divides, it duplicates its DNA by copying it

Question 4

DNA Polymerase

Answer 4

protein enzyme that joins individual nucleotides to produce a new strand of DNA

Question 5

Telomeres

Answer 5

DNA at the tips of chromosomes that is particularly hard to replicate (tend to get shorter after each replication- ties to development of cancer)