What synthesizes short segments of RNA?
What synthesizes short segments of RNA?
Short segments of RNA are synthesized, called RNA primers. The enzyme that synthesizes the short segments of RNA is called a primase.
Which enzyme synthesizes short segments of RNA during replication?
In contrast to DNA synthesis, the synthesis of RNA can initiate de novo, and an enzyme called primase synthesizes short fragments of RNA (e.g., three to ten nucleotides long) complementary to the lagging strand template at the replication fork.
Which of the following synthesizes short strands of RNA during DNA replication?
AP Bio – Chapters 16 & 17
| A | B |
|---|---|
| Catalyzes synthesis of a new strand of DNA | DNA polymerase |
| Covalently connects short segments of DNA | ligase |
| Synthesizes short segments of RNA | primase |
| Keeps the unpaired template strands of DNA apart during replication | single-strand binding proteins |
What enzyme synthesizes short RNA sequences prior to DNA replication?
primase
What is the final step in DNA replication?
5) The last step of DNA Replication is the Termination. This process happens when the DNA Polymerase reaches to an end of the strands.
Where does DNA replication occur in humans?
DNA replication happens in the nucleus of human cells. It will also take place within mitochondrial matrix.
What happens at the origin of replication?
An origin of replication is a sequence of DNA at which replication is initiated on a chromosome, plasmid or virus. Larger DNAs have many origins, and DNA replication is initiated at all of them; otherwise, if all replication had to proceed from a single origin, it would take too long to replicate the entire DNA mass.
Why does DNA replication occur before cell division?
In order for all of the cells in your body to maintain a full genome, each cell must replicate its DNA before it divides so that a full genome can be allotted to each of its offspring cells. If DNA replication did not take place fully, or at all, the offspring cells would be missing some or all of the genome.
Why does DNA replication occur before mitosis and cell division?
DNA replication needs to occur because existing cells divide to produce new cells. So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!
Does DNA replication occur prior to mitosis and cell division?
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.
Where does DNA replication occur in eukaryotes?
Comparisons between prokaryotic and eukaryotic DNA replication
| Prokaryotic DNA Replication | Eukaryotic DNA replication |
|---|---|
| Occurs inside the cytoplasm | Occurs inside the nucleus |
| Only one origin of replication per molecule of DNA | Have many origins of replication in each chromosome |
Why is DNA replication important for mitosis?
The purpose of DNA replication is to produce two identical copies of a DNA molecule. This is essential for cell division during growth or repair of damaged tissues. DNA replication ensures that each new cell receives its own copy of the DNA.
How do cells make sure DNA replication is accurate?
The cell has multiple mechanisms to ensure the accuracy of DNA replication. The first mechanism is the use of a faithful polymerase enzyme that can accurately copy long stretches of DNA. The second mechanism would be for the polymerase to catch its own mistakes and correct them. DNA is double-stranded.