is there a need to produce Okazaki fragments on the lagging strand, but not on the leading strand of DNA?
The two parental strands of DNA are antiparallel and DNA polymerase makes DNA in the 5′ to 3′ direction only.
It is substantially more efficient to make several shorter strands rather than one longer strand of DNA.
There is not enough cellular DNA ligase for bonding Okazaki fragments together if they were produced from both parental strands.
By having one leading strand and one lagging strand the cell can limit the amount of DNA polymerase used for chromosomal replication.
The leading strand opens first, and so Okazaki fragments are not needed. The lagging strand unwinds second resulting in the need to produce Okazaki fragments.
Which statement about DNA replication is INCORRECT?
It is powered by the hydrolysis of ATP.
It begins at multiple origins of replication sites along eukaryotic chromosomes.
It proceeds with the addition of new nucleotides to the 3′ end of a growing DNA strand.
It requires that the two strands in the double helix be separated from each other.
Both strands within the DNA double helix are used as templates for synthesis of new strands.
In a single strand of DNA, nucleotides are connected by which type of bond?
DNA polymerase can be described as and enzyme that ________.
adds nucleotides to the 3′ end of a growing DNA strand.
produces a primer needed for DNA replication.
binds to DNA and keeps the replication fork open.
makes covalent bonds to attach DNA fragments together.