DNA replication

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what must happen before a cell can divide? It must duplicate its DNA
Why does DNA replicate itself? Cells divide for an organism to grow or reproduce, every new cell needs a copy of the DNA or instructions to know how to be a cell. DNA replicates right before a cell divides.
when does DNA replication take place in eukaryotes? DNA replication takes place during the S phase of the cell cycle
How does DNA replication start? The double helix is unwound and each strand acts as a template for the next strand. Bases are matched to synthesize the new partner strands.
What is DNA unzipping? The process where the hydrogen bonds between the base pairs in DNA are broken. This happens before DNA replication can start
How does DNA replication take place? DNA replication begins with the "unzipping" of the parent molecule as the hydrogen bonds between the base pairs are broken. Once exposed, the sequence of bases on each of the separated strands serves as a template to guide the insertion of a complementary set of bases on the strand being synthesized.
Which enzyme helps unwind the double helix? Helicase
During DNA replication what is the new strand made from? It is assembled from deoxynucleoside triphosphates.
DNA synthesis occurs in which direction? DNA synthesis can only occur 5' to 3'
What is the name of the enzyme that moves along and adds nucleotides to the unwound strands of DNA? RNA polymerase enzyme called primase makes a short RNA primer. DNA polymerase III extends this RNA primer on both strands.
which enzyme adds short sequences of RNA to both DNA strands? RNA primase
what is the function of the primer in DNA replication that are added by RNA primase? The primer allows DNA polymerase III to bind and start replication
In which direction does DNA polymerase III adds nucleotides to each template strand? DNA polymerase III adds nucleotides to each template strand in a 5'→3' direction
which strand is replicated in a continious manner in the same direction during DNA replication? The leading strand
which strand is replicated in fragments in DNA replication? The lagging strands
what are the fragments in the lagging strand called? Okazaki fragments
what is the function of DNA polymerase I? DNA polymerase I removes the RNA primers and replaces them with DNA
what is the function of DNA ligase? DNA ligase then joins the Okazaki fragments together to form a continuous strand

what must happen before a cell can divide?

Why does DNA replicate itself?

when does DNA replication take place in eukaryotes?

How does DNA replication start?

What is DNA unzipping?

How does DNA replication take place?

Which enzyme helps unwind the double helix?

During DNA replication what is the new strand made from?

DNA synthesis occurs in which direction?

What is the name of the enzyme that moves along and adds nucleotides to the unwound strands of DNA?

which enzyme adds short sequences of RNA to both DNA strands?

what is the function of the primer in DNA replication that are added by RNA primase?

In which direction does DNA polymerase III adds nucleotides to each template strand?

which strand is replicated in a continious manner in the same direction during DNA replication?

which strand is replicated in fragments in DNA replication?

what are the fragments in the lagging strand called?

what is the function of DNA polymerase I?

what is the function of DNA ligase?

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