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39. When a virus attaches to a cell, it injects the cell with its DNA or RNA. This genetic coding material then implants itself into (or destroys) the DNA of the host cell. The viral genetic coding then induces mitosis, and the cell reproduces, and continues to make copies, until the immune response system of the organism reacts. Generally, viruses 'reproduce' by injecting the viral DNA into a host cell using the host cell's DNA synthesis enzymes to duplicate the viral DNA and the proteins that comprise the viral protein coat (capsid).
What else can I help you with?
What is the mode of reproduction of univalve?
Univalves generally reproduce sexually, with individuals possessing both male and female reproductive organs. They can also reproduce asexually through fragmentation or budding in some species.
What are two reasons that viruses are considered non living?
Some argue that viruses are not living organisms because they can only replicate themselves by infecting a host cell and therefore cannot reproduce on their own. And also viruses do not metabolize on their own.
What is the only life function that viruses share with a cell?
The only life function that a virus shares with a cell is reproduction. Both cells and viruses reproduce in some way.
Why are viruses considerd to be nonliving?
they can only reproduce in a host cell
What are the features virus and typical plant cell have in common?
AnswerThey do reproduce but a virus can't reproduce outside of a host cellso the only thing in common really is that the virus needs a cell to reproduceThe only real similarity between viruses and living cells are that they both have some sort of genetic material. Cells have DNA and viruses have either RNA or DNA. But since viruses cannot reproduce on their own (because they are non-living) they need to reproduce by inserting their genetic material into living cells.
Why don't viruses and prions qualify as organisms?
Both are missing some key characteristics of life - prions more so than viruses. The most prominent feature that is missing is the ability to reproduce without a host. Viruses can't reproduce without a host cell and prions can't propagate without a normal protein that is transformed into a prion.
What is the difference between reproduction cycles of viruses and reproduction cycles of living things?
Viruses don't have their own metabolism so they simply can't reproduce without a cell. That's why they are obligatory parasites. Living cells, on the other hand, can channel some of their metabolic energy to reproduce themselves, without having to take over something else's metabolism to do so, like viruses invariably have to.
When do viruses reproduce?
viruses can not reproduce without the help of a living cell(host).they remain inert or dead(in-active) when they are in free environment or outside the body(host).when they enter the living cell or in some cases insert their nucleic acid into the host,it takes over the host's biosynthetic machinery and forces it to reproduce essential viral components and after proper assembly the cell burst and viruses leave the cell to infect other cells
How do viruses reproduce compared to bacteria?
Viruses replicate inside body cells, using the host cell to do the work and provide the materials for reproduction. Bacteria reproduce outside body cells and, since, unlike viruses, they are living organisms, bacteria are able to do the work and production of new bacteria without a need for a host.A description of the 'Lytic Cycle', the process that some types of viruses follow in reproduction, is given in the related questions below for more detail of the process of reproduction of some viruses inside body cells.
What is the mode of reproduction of univalve?
Univalves generally reproduce sexually, with individuals possessing both male and female reproductive organs. They can also reproduce asexually through fragmentation or budding in some species.
What cannot reproduce outside of living organisms?
Parasites need a host in order to reproduce. These can for the most part be divided into two major groups: 1) Parasites that are phisiologically dependant on their host to survive but once leeching off of nutrients they can reproduce without having to hijack any of the host's systems. These cannot survive for long without being in their host, nor can they reproduce; 2) Obligatory parasites, which are things such as viruses. There isn't a consensus as to whether viruses are alive or not, but some broaden the definition of life to include them. Viruses are called obligatory parasites because they cannot reproduce without hijacking the cellular mechanism for transcribing their own viral DNA or translating their viral RNA to make more viral particals.
What are two reasons that viruses are considered non living?
Some argue that viruses are not living organisms because they can only replicate themselves by infecting a host cell and therefore cannot reproduce on their own. And also viruses do not metabolize on their own.
What is the only life function that viruses share with a cell?
The only life function that a virus shares with a cell is reproduction. Both cells and viruses reproduce in some way.
How are viruses different from living organisms?
First Answer:Viruses are different from living organisms because:Viruses need host cells to reproduce.The do not perform cellular respiration.Viruses also need no nutrition, minerals or food. They need nothing other than a host.Second Answer:Viruses ARE living organisms.
Why does viruses have parasites?
viruses are considered parasites (obligate parasites) because they cannot exist on their own. they need the host cell's machinery to reproduce so they cannot "survive" (technically not living) outside the cell.
Why are viruses considerd to be nonliving?
they can only reproduce in a host cell
Why do scientists consider viruses to be non living?
Because they can not reproduce on their own.
