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Which is the smallest out of yeast or viruses or bacteria?
Viruses are, by far, the smallest. Bacteria and yeast cells have a complete cell structure, including the nucleus and all of the other parts of a cell. Viruses don't, so they have to inject their 'material' (I don't remember the name of the inside the virus) into the 'host' cell and force it to duplicate the viruses, which kills the host cell.
What is the difference between active virus and latent virus?
A hidden virus is known in the words in its name "HIDDEN virus". It hides and stays inactive. The active virus is also known in its name too "ACTIVE virus". The two viruses have different ways on spreading it own kind throughout the host or hosts.
What occurs during a lytic cycle?
The lytic cycle is one of two methods of viral reproduction, the other being the lysogenic cycle. These cycles should not, however, be seen as separate, but rather as somewhat interchangeable. The lytic cycle is typically considered the main method of viral replication (reproduction), since it results in the destruction of the infected cell.The lytic cycle is often described in steps, sometimes three steps, sometimes five steps or six steps. But all describe the same process. See the related question below for more information about the steps of the lytic cycle.Penetration To infect a cell, a virus must first enter the cell through the plasma membrane and (if present) the cell wall. Viruses do so by either attaching to a receptor on the cell's surface or by simple mechanical force. The virus then releases its genetic material (either single- or double-stranded DNA or RNA) into the cell. In doing, the cell is infected and can also be targeted by the immune system.Biosynthesis The virus' nucleic acid uses the host cell's machinery to make large amounts of viral components. In the case of DNA viruses, the DNA transcribes itself into messenger RNA (mRNA) molecules that are then used to direct the cell's ribosomes. One of the first polypeptides to be translated is one that destroys the hosts' DNA. In retroviruses (which inject an RNA strand), a unique enzyme called reverse transcriptase transcribes the viral RNA into DNA, which is then transcribed again into mRNA.Maturation and lysis After many copies of viral components are made, they are assembled into complete viruses. The phage then directs production of an enzyme that breaks down the bacteria cell wall and allows fluid to enter. The cell eventually becomes filled with viruses (typically 100-200) and liquid, and bursts, or lyses; thus giving the lytic cycle its name. The new viruses are then free to infect other cells.Lytic cycle without lysis Some viruses escape the host cell without bursting the cell membrane, but rather bud off from it by taking a portion of the membrane with them. Because it otherwise is characteristic of the lytic cycle in other steps, it still belongs to this category. Hepatitis C viruses presumably use this method.
What is the name of the virus that causes influenza?
Influenza is caused exclusively by viruses in the Orthomyxoviridae family.Viruses are not true cells and are metabolically inert until they are attached or inside of a host cell of a plant or animal (including humans).
Name 2 ways a virus can spread among humans?
Viruses are not living pathogens, they are "organisms" with the ability to duplicate themselves ~ but only if they have a living host to provide the energy and materials for the duplication process. Different viruses use different hosts and most of the time they don't cross over species for hosts, but some do. The H1N1/09 virus was able to mutate from a strain that pigs got to a strain more targeted toward people. Other viruses use plants and other animals for hosts.The short explanation of how this happens is:Virus is in the environmentHost is exposed to the virus in the environmentSome virus particles are able to attach to the cell walls of the cells of the host.The virus connects to the center of the cell and injects genetic material that the virus uses to instruct the host cell how to make virus duplicatesHost makes new virusesVirus duplicates get out of host cells and spread to infect more hostsSee the related questions below about the lytic cycle of viruses.
What is the name for a package of nucleic acid wrapped in a protein coat that must use a host cell's machinery to reproduce itself?
A virus is a package of nucleic acid wrapped in a protein coat that requires a host cell's machinery to replicate.
What virus causes a cell to burst?
Lysis is the name for the splitting open of the host cell membrane with the release of newly formed virus particles. It is one of the ways that the new viruses are released after replication. The release is called viral shedding. Another way that viruses are shed, besides through lysis, is budding. Viruses that need to be held in an envelope after formation (like HIV and smallpox), separate from the host cell through a process called budding, where they surround themselves with a piece of the cell's plasma membrane prior to the release.
What is the difference of PROVIRUS and VIRION?
A provirus is the virus' genetic material integrated with the genetic material of the host cell. Some viruses stay in this form inside a cell until a specific stimulus causes the provirus to start to reproduce and lyse, or burst, the cell. For instance, some prophages (a provirus from a bacteriophage) the process doesn't continue until UV radiation hits the bacterium. A virion is the name of the actual virus particle. The virion is comprised of the capsid and the DNA (or RNA) of the virus. The term virion is used in a similar way that bacterium is when referring to a single bacterial cell. Some virions, such as HIV also have a phospholipid bilayer that they gain by 'budding' from the host cell. When a cell is lysed the provirus gives way to viral progeny, the virions.
Why is a lytic infection given that name?
A lytic infection is named based on the process of viral replication and cell destruction. In a lytic infection, the virus enters a host cell, replicates using the cell's machinery, and then causes the cell to burst (lyse), releasing new virus particles to infect other cells. This process is called lysis, hence the name lytic infection.
What is the function of a virus?
Viruses are malicious software (malware) in which their sole purpose is to replicate and infect non-infected computers. Their are many mediums to which a virus can infect a computer, most commonly through the internet and email attachments. When viruses infect a computer, it attaches itself to a "host" file (hence the name virus because it acts like a real world virus). Next, it injects its code into the host file so that whenever that infected file is run, the virus executes first and then the actual file starts. The "payload" is the official term to the effects a computer virus has on a PC.
Name the organism that is not even a whole cell?
Virus and viroids
Which is the smallest out of yeast or viruses or bacteria?
Viruses are, by far, the smallest. Bacteria and yeast cells have a complete cell structure, including the nucleus and all of the other parts of a cell. Viruses don't, so they have to inject their 'material' (I don't remember the name of the inside the virus) into the 'host' cell and force it to duplicate the viruses, which kills the host cell.
Name and explain the stages of viral reproduction?
The bacteriophage blinds to the bacterium.The phage DNA enters the host cell.The host DNA is digested, new phage DNA forms, using nucleoleotides from former host DNA.The host cell transcribes and translates the phage DNA, producing phage proteins.Assembly of new is complete. A phage-encoded enzyme causes the cell to lyse.New phage are released to start the cycle again.
What is the difference between active virus and latent virus?
A hidden virus is known in the words in its name "HIDDEN virus". It hides and stays inactive. The active virus is also known in its name too "ACTIVE virus". The two viruses have different ways on spreading it own kind throughout the host or hosts.
What is the host cell for strep throat?
The cell that causes strep throat is a bacteria by the name of streptocacas.
What is the name of first cell phone virus?
Cobir A & it was discovered in the year 2004
What is the structure of a virus cell?
The genetic material DNA, usually.Then there are retroviruses, but they have RNA genetic material, which cells use catalytically, among other uses. And bath types of viruses have protein in common with living cells.
