Table of Contents
- 1 What is the correct order for DNA virus replication?
- 2 What is the correct order of the steps of a viral infection?
- 3 What are the 7 steps of viral replication?
- 4 What are the 5 stages of the lytic cycle?
- 5 How do viruses replicate within a host cell?
- 6 What are the 4 steps of the lytic cycle?
- 7 What are the steps involved in virus replication?
- 8 What is the next step in the transcription of a virus?
What is the correct order for DNA virus replication?
Viral replication involves six steps: attachment, penetration, uncoating, replication, assembly, and release.
What are the 5 steps of virus replication?
Most productive viral infections follow similar steps in the virus replication cycle: attachment, penetration, uncoating, replication, assembly, and release.
The virus life cycle could be divided into six steps: attachment, penetration, uncoating, gene expression and replication, assembly, and release.
How do DNA viruses replicate?
DNA viruses replicate their genomes using DNA polymerase enzymes and transcribe their mRNA using DNA-dependent RNA polymerase enzymes. Both (+) and (−) ssRNA viruses replicate and transcribe their genomes using RdRp enzymes (Fig. 3.1).
Which step in the replication cycle of viruses do you think is most critical for the virus to infect cells explain why?
The assembly step is the most critical because new virions are assembled to infect cells. The entry step is the most critical as nucleic acid of virus needs to enter the host cell naked, leaving the capsid outside.
What are the 5 stages of the lytic cycle?
Terms in this set (5)
- attachment. attach to the cell.
- penetration. only nucleic acid is injected into the cell through the hole caused by the tail fibers and enzymes.
- synthesis. replication of viral nucleic acid and protein and envelope.
- assembly.
- release.
What is the reproductive cycle of a virus?
There are two processes used by viruses to replicate: the lytic cycle and lysogenic cycle. Some viruses reproduce using both methods, while others only use the lytic cycle. In the lytic cycle, the virus attaches to the host cell and injects its DNA.
How do viruses replicate within a host cell?
Viruses cannot replicate on their own, but rather depend on their host cell’s protein synthesis pathways to reproduce. This typically occurs by the virus inserting its genetic material in host cells, co-opting the proteins to create viral replicates, until the cell bursts from the high volume of new viral particles.
Where does DNA replication occur?
nucleus
DNA replication occurs in the cytoplasm of prokaryotes and in the nucleus of eukaryotes. Regardless of where DNA replication occurs, the basic process is the same. The structure of DNA lends itself easily to DNA replication.
What are the 4 steps of the lytic cycle?
The lytic cycle involves four steps: infecting a host (an action called exposure), injecting a cell with the virus’s genetic material, using the cell’s metabolic engines to create new viruses, and finally, weakening the cell walls until the host cell lyses, or bursts open from excessive internal pressure.
What is the correct order of the lytic cycle?
The lytic cycle, which is also referred to as the “reproductive cycle” of the bacteriophage, is a six-stage cycle. The six stages are: attachment, penetration, transcription, biosynthesis, maturation, and lysis.
What are the steps involved in virus replication?
Although the specific detail of virus replication vary from one virus to another, general replication is same for most virus. Release of viral genome from capsid; a process called un-coating that sometime occurs simultaneously with penetration) Release of progeny virus from host cell. i. Attachment (Adsorption):
What phase of the cell cycle does DNA replication occur?
In eukaryotic cells, such as animal cellsand plant cells, DNA replication occurs in the S phase of interphaseduring the cell cycle. The process of DNA replication is vital for cell growth, repair, and reproduction in organisms. Key Takeaways
What is the next step in the transcription of a virus?
Transcription of viral genome is usually the next step in all virus except in those virus whose genome acts directly as mRNA (eg. Picorna virus). RNA viruses that carry minus (-) stranded RNA first transcribe their DNA to plus (+) stranded RNA that function as mRNA.
How does the lagging strand of DNA begin replication?
The lagging strand begins replication by binding with multiple primers. Each primer is only several bases apart. DNA polymerase then adds pieces of DNA, called Okazaki fragments, to the strand between primers. This process of replication is discontinuous as the newly created fragments are disjointed.