Unit 3 Quiz: DNA Replication Flashcards
Chromosome
Super coiled DNA
DNA Replication
The process by which a chromosome is copied to make two identical DNA molecules.
What is the original DNA Helix strand called?
Parent Cell
What does the parent strand act as?
The parent strand acts as the template for synthesizing new DNA strands.
What must happen to the super coiled parent helix in order for DNA replication to take place?
It must be uncoiled
Topoisomerase
An enzyme that loosens the coiled DNA ahead of the replication fork. `
Helicase
An enzyme that unzips and separates the DNA by breaking the hydrogen bonds between the nitrogenous base.
What is formed when the Heliccase unzips and separates the DNA?
Replication fork
DNA Polymerase
An enzyme responsible for adding nucleotide one by one to the new growing DNA strand (goes to 5 prime to 3 prime) it can only add nucleotide to the 5 prime end of the complementary strand.
Which strand is made as a whole piece?
Leading strand
What strand is made up of Okazaki fragments
Lagging strand
Okazaki fragments
Pieces that are added onto the strand of DNA, but cannot be made continuously.
DNA Ligase
An enzyme that connects the gaps between the okazaki fragments on the lagging strand.
What does semi conservative mean?
When the DNA is split into two daughter helices, each contains one old strand and one new strand.
