viruses dont have metabolism and dont interract with enviroment to obtains nutrients and water or other substances.Viruses multiplicate only in cells.For this reason theay are calld intracelular parasites.
Viruses depend on living cells because they reproduce inside of them.
According to a student taking the AP biology exam, he/she lost 10 points by choosing an answer that said viruses are living things and as a result, states that viruses are not living things :http://answers.yahoo.com/question/index?qid=20080926021144AAwdJ2h According to MCAT training materials (MCAT is the test taken to get into med school) Viruses are no considered cells because, among other reasons, they cannot live independently. The MCAT materials say that there is a debate as to whether viruses are living things because of the nature of their life cycle (again - they cannot live independently). Other posts that I found on this topic by searching ask.com say that viruses are not living things because they fail to meet the 7 criteria of living things. Viruses are 20 - 300nm in size and prokaryotes are 1 - 10um. While viruses are smaller, many feel they manufacture rather than reproduce and therefore are not living things. MCAT training materials do not come out and say whether they are living or non-living but refer to them as parasitic, acellular, and incapable of living independently and note that there is debate as to whether they are living things. Once can say truthfully, as another poster noted, viruses fail traditional, established criteria for 'life'. In this instance, I would say the smallest thing that meets the criteria for life is prokaryotes (bacteria). Debatable is whether or not established criteria for life need to be modified in order to accommodate the unique nature of viruses.
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viruses are nonliving things. but they need living things to reproduces. so live
Bacteria and viruses are small and can only be seen through a microscope. The small living things are microorganisms or microbes. Some people do not think viruses are living things because they are acellular particles. They consider them to be an organic structure that interacts with living organisms.
Viruses are things that spread and contain germs. An Organism is a living thing.
Viruses are things that spread and contain germs. An Organism is a living thing.
They reproduce.
Very tiny living things include microorganisms such as bacteria, viruses, and fungi. These microscopic organisms are essential for various ecological processes and can be found in almost every environment on Earth.
Viruses are not living things. Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not living things.
Viruses aren't living, and are the only non-living organisms, and bacteria are prokaryotes, meaning they don't have a defined nucleus.
Viruses have some, but not all, of the characteristics of living things.