it cannot replicate its structure by itself because it is acellular and so has to inject a host cell with its RNA and "instruct" it to replicate the RNA for it.
Viruses generally have either DNA or RNA, not both, and since both nucleic acids are needed for replication, viruses depend on their host cell to replicate them.
Because they are not living organisms themselves, so they have no way to produce energy or materials to create replications of themselves without "hijacking" the cells of living organisms to do that for them. Viruses are particles made of chemicals, proteins and some with fats plus genetic instructions that they carry and are able to insert into the cells of hosts through chemical processes, but they are not self-sustaining. They don't eat or use photosynthesis like animals and plants. So they use the genetic instructions to make the cell work as a factory to reproduce themselves using the fats, proteins, and chemicals from the host. Reproduction is the only goal of these particles.
Viruses aren't even considered living entities. They do not have a means to reproduce on their own, so they need living cells to reproduce. Viruses alter the cell's "blueprint" and the cell begins to make more viruses. When the host dies, the cells die, and the virus cannot reproduce. Eventually it just breaks down.
They do not. They replicate using the cell's "machinery". This is to that they can survive and grow in numbers, and in turn killing the cell. Viruses can survive unfavourable conditions by staying within the cell also
Because they have no enzymes necessary for metabolism and have no structures to make proteins.
they can not reproduce without a host cell .
Viruses need a living host for reproduction. They, themselves, are not alive, so they must have a living host to provide the material to use for building duplicates, as well as for the energy to use in the production.
They do not reproduce asexually or sexually. Viruses need a host like a cell in order to reproduce. In the dormant state, they are virions, and considered to be nonliving. However, in their active state, as viruses, they are considered to be living organisms.
Need a host.
The type of cells that viruses live in are host cells. Viruses need host cells in order to reproduce or multiply.
Viruses either have a strand of DNA or RNA not both like living organisms. They need a host (you and me) in order to replicate.
Biologists consider dormant virions to be non-living because they must obtain a host to function and replicate themselves. However, active viruses are considered to be living, by most scientists.
Bacteria are able to reproduce on their own while viruses need a host to.
This is because viruses multiply rapidly . Faster than any other micro-organism . Also, viruses need a host to live .They are non living when not on a host . To estimate their characteristics is hard because they are living and non living .
they can not reproduce without a host cell .
Because viruses need a live host in order to reproduce. Viruses are obligate intracellular parasites. Therefore, they cannot reproduce outside their host cell, and therefore die out. They are diffcult to culture because you need something living in order to culture them in, and see the progress.
Viruses need a living host for reproduction. They, themselves, are not alive, so they must have a living host to provide the material to use for building duplicates, as well as for the energy to use in the production.
They do not reproduce asexually or sexually. Viruses need a host like a cell in order to reproduce. In the dormant state, they are virions, and considered to be nonliving. However, in their active state, as viruses, they are considered to be living organisms.
Since viruses are non-living they do not need to get rid of waste as they do not make any. Their host does, however. The host can't control the amount of waste build up as the virus has control of the DNA and it only wants to make more viruses.
Since viruses are non-living they do not need to get rid of waste as they do not make any. Their host does, however. The host can't control the amount of waste build up as the virus has control of the DNA and it only wants to make more viruses.
Need a host.
Viruses are nonliving. They hijacked the DNA of the host cell and make the host cell produce the proteins and other things they need. Since they are not living they do not need food.