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One can not generalize this that easy. Because virus co-evolves together with its host at a very specific manner. I am working on the following area so giving example in the same: HIV need CD4 and CXCR4/CCR5 receptors to infect T-cells (of human). when these receptors are missing (example B cells) HIV wont infect those cell types. So the infection of a particular virus to enter its host cell requires specific receptors!
Once it enter the cell, the virus face restriction factors(proteins fight against virus), so virus need to have or evolve counteraction, otherwise it will not be able to replicate. Same HIV example, it has Vif protein to fight against APOBECs of human T cells. Unfortuantely APOBEC of B cell will kill HIV rapidly irrespective of vif presence, hence HIV avoid infecting B cells.
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Where does Viruses can only replicate?
Inside a host cell.
Viruses can reproduce only inside what?
host cells!
Viruses are only active when?
They are active only when they are inside a living host cell.
Why would viruses not grow on milk?
Viruses do not grow because they are not alive. They can reproduce, but only inside a host cell.
What separates viruses from living things?
they can only reproduce inside a cell
Do viruses only reproduce inside living things?
A Virus must invade a host cell in order to reproduce. What people commonly mix up with them is bacteria which has no need to
Can viruses only cause disease in humans?
Viruses can affect animals, and some viruses can affect plants.
How do viruses multiply and what diseases you can can get from them?
There are currently 20 families of viruses that infect humans. There are two additional viruses (Hepatitis D and Hepatitis E) which have not yet been assigned to a families but are clearly distinct from the other families infecting humans. Viruses replicate inside cells by hijacking strands of RNA to duplicate themselves. See the related link for more details on viral diseases.
Do viruses only attack humans?
Virus's effect every living creature, including reptiles and fish!
When is the only time that viruses are active?
the virus is active when they are inside living things (host cell)
What organism that can reproduce only inside a host cell?
viruses can only reproduce in living cells by injecting their own dna into the nucleus
Which best describes how common cold spread in the human body?
viruses replicate inside respiratory cells.
