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because they are not able to carry out life process outside the human body they are active only in human body.
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One reason that viruses are considered to be nonliving is that they are not made of protein?
False; they are not made up of cells.
What is the difference between cells and viruses?
Virus: is a strand of hereditary material surrounded by a protein coating that can infect and multiply in a host cell. Host Cell: a living cell invaded by or capable of being invaded by an infectious agent.
Do nonliving organisms contain DNA?
If by non-living you mean an object such as a sheet of metal then no they are not composed of cells. If you are referring to something dead, then yes the DNA is still intact at least for a while anyway they do deteriorate in time.
Are all organism are made up of one or more cell?
true
One reason Tetragraptus is considered a good index fossil is that Tetragraptus?
Losseni
One reason that viruses are considered to be nonliving is that they are not made of protein?
False; they are not made up of cells.
Why do people sometimes say that viruses lack independent replication?
Viruses can not replicate without a living host cell. This is one reason that they are not considered to be alive.
What is the difference between cells and viruses?
Virus: is a strand of hereditary material surrounded by a protein coating that can infect and multiply in a host cell. Host Cell: a living cell invaded by or capable of being invaded by an infectious agent.
What is one property of one virus that makes it difficult to cure viral infections?
Viruses are nonliving and that fact makes it hard for us to come up with antivirals.
Why are viruses thought to be one of the greatest threats to human dominance of the planet?
Viruses are considered to be a serious threat to humans because they are very difficult to control. Very few things can control viruses except antivirals.
Is pollution abiotic or biotic?
Pollution is most often considered to be abiotic but there are cases where it is biotic. One of these is invasive species. However, that is not usually what answer you are looking for.
Do nonliving organisms contain DNA?
If by non-living you mean an object such as a sheet of metal then no they are not composed of cells. If you are referring to something dead, then yes the DNA is still intact at least for a while anyway they do deteriorate in time.
What is one reason why a virus could be considered a life form?
it can move
Are all organism are made up of one or more cell?
true
One reason Tetragraptus is considered a good index fossil is that Tetragraptus?
Losseni
Were Sirens considered killers?
They were assuredly considered one of the dangers of the sea, as a reason to why some ships did not return or were wrecked on reefs.
What cells do the cell theory apply to?
plants and animalsmulticellular organisms fungi
