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What is the scientific proof that viruses are not living organisms?
Viruses lack any form of energy and are not alive according to this definition. Computer viruses make slight changes in their code (mutate) but they are not alive. Computer viruses can mutate to overcome antiviral software but they are not considered to be alive anymore than what we call viruses that infect microorganisms or host cells.
What is the smallest microbe?
Viruses are the smallest microbes known that cause disease. They are sub-microscopic. This means that they can not be seen with a regular microscope because they are too small (measured in nanometers). It takes an electron microscope to see a virus particle. The second microbe that is among the smallest would be bacteria and then probably protists, as a generalization, after that (protists and bacteria have wider ranges of sizes than viruses). Bacteria are microscopic living organisms, while the viruses are non-living sub-microscopic organisms. Protists are single-celled living organisms, such as protozoa.
Discovery that viruses act more like a chemical than an organism came from work with the?
Tobacco mosaic virus (TMV). It was discovered that TMV could be crystallized, like a chemical, and still retain its ability to cause disease in plants. This finding challenged the prevailing view that viruses were organisms, leading to the recognition of viruses as complex biological molecules rather than living entities.
Did viruses originate naturally or are they a hybrid?
Both. Viruses are naturally occurring organisms that have been around "forever". They have the ability to mutate or change themselves into new shapes and types sometimes using genetic material from more than one kind of virus, which would make them naturally occurring hybrids. They were not man-made.
What are the 3 types of micro organisms?
The three main types of microbes are fungi, bacteria and viruses. Bacteria are usually smaller than fungi and virus is the smallest type of microbe.
True or false viruses multiply the same way as other organism?
FALSE Although viruses can multiply, they do so differently than organisms. Viruses can multiply only when they are inside a living cell. The organism that a virus enters and multiplies inside is called a host. A host is an organism that provides a source of energy for a virus or another organism. A virus acts like parasite, an organism that lives on or in a host and causes it harm. Almost all viruses destroy the cells in which they multiply CREDIT FROM: NORTH CAROLINA 8TH GRADE PRENTICE HALL SCIENCE EXPLORER
What kingdom is influenza in?
Viruses are classified differently than living organisms, since they are not technically alive. In taxonomy, viruses are not assigned to a Domain, Kingdom, Phylum, Class, or Order. The influenza viruses start, in most classification systems, at the level of the Family. They are in the Family of Orthomyxoviridae. There are a few newer classification systems that have been developed to better categorize and classify viruses, but these are not yet the standard.
How do slow changes such as moving continents affect organisms differently than rapid changes such as a meteorite affict organisms?
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Can viruses survive refrigeration and freezers?
Many, if not most types do. They are much less tolerant of heat than cold. For example, the common influenza viruses are destroyed by heat of 167-212°F [75-100°C]. Viruses are non-living organisms so they can tolerate colder temperatures than living organisms.
What are disease-causing organisms that are smaller than bacteria?
All the disease causing viruses are smaller in size than bacteria. Rickettsia and chlamydia are other groups of organisms, which are smaller than true bacteria.
Why do cold viruses need hot?
generally bacteria and viruses multiply rapidly in colder environments rather than hot conditions.so,cold virus need hot
What types of microbial organisms other than bacteria would you expect to find in the environment?
The types of microbial organisms that can be found in the environment are as follows:fungi, protozoa, viruses and algae
What is bigger bacteria or viruses?
In this case, bacteria can grow more and divide into more organisms, but fungus, however, can grow into mushrooms that are bigger than organisms. so in opinion, it is fungus.
Complete living unit?
The smallest complete living unit known to science is a single cell. The smallest single celled organisms known, mycoplasma, are not much bigger than the very largest viruses. Viruses are not technically considered to be living organisms by most scientists.
What are the features of Viruses?
1. Viruses are a cellular, non-cytoplasmic infectious agents. 2. They are smaller than bacteria, and this can pass through bacteriological filter. 3. Viruses are transmissible from disease to healthy organisms. 4.All viruses are obligate parasites and can multiply only within the living host cells. 5.Viruses contain only a single type of nucleic acid either DNA or RNA. 6. Viruses are host specific that they infect only a single species and definite cells of the host organisms. 7. Viruses are effective in very small doses. They are highly resistant to germicides and extremes of physical conditions.
What is Hershey-Chase contribution to science?
they studied viruses and nonliving particles smaller than a cell that may infect living organisms.
Organisms whose cells have no visible nucleus?
Certain bacteria and viruses carry their DNA in little rings rather than in chromosomes, so don't have a distinct nucleus like larger organisms.
