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ajhd
cytomegalovirus
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∙ 13y ago
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What is the smallest group of living things?
The smallest living things depend on how a living thing is defined. Some biologists do not believe viruses are living organisms because there are no free living forms (all are parasitic) and because they must reply on their host for reproduction. Others believe that, despite this, they have an existence of their own separate to the host and are subject to natural selection and are therefore alive. If you accept viruses are not alive, the smallest living things would be amongst the bacteria or protists. Bacteria are single celled organisms with no cell nucleus while protists have a nucleus. Generally the bacteria are slightly smaller but their sizes overlap. If you accept that viruses are alive, the smallest group are the Parvoviruses between 18 and 26 nanometres. These are single stranded DNA viruses. 1 nm = 1/1000000000 metres or 0.000039 inches.
Are bacterial viruses with a polyhedral head attached to a helical tail?
bacteriophages
Cultivation of viruses in embryonated egg culture?
In clinical virology the use of embryonated eggs are frequently used because viruses need something living for the viruses characteristics to come out. It is frowned upon to use monkey and rats for this during school so embryonated eggs are the next best things.
Why eggs are often used to grow animal viruses?
Animal viruses need a living host animal to survive, so this is why eggs are often used to grow them. It was show that the flu virus could be grown that way in 1931.
Viruses need water to survive?
they move from person to person and regenerate... some feed on your red blood cells, while others infuse themselves into your dna so white blood cells cant fight them. they then replicate themselves. the only way to kill a virus is to isolate all who have it, which is impossible in the case of certain ones... like the flu. everyone has it at sometime
What are the viruses called?
They all have their own names, but as a group they are just viruses.
Is hand foot and mouth disease a bacteria?
Hand, foot and mouth disease is caused by a group of viruses, that belong to genus entero virus. This group include polio viruses, coxsackie viruses, echo viruses and entero viruses.
What type of pathogen is the hand foor and mouth disease?
This disease is caused by the group of viruses, which belong to the genus enterovirus. Mainly coxackie viruses, echo viruses and entero viruses.
What is paramyxovirus?
a group of viruses including those causing mumps and measles
What is cytomegalovirus?
Cytomegalovirus (CMV) is a virus related to the group of herpes viruses.
What is enterovirus?
it is any of a group of viruses that primarily affect the gastrointestinal tract
What is an Enterovirus?
it is any of a group of viruses that primarily affect the gastrointestinal tract
What is called the group of viruses having both dna and rna?
Reverse transcriptase is the name given to the group of viruses having both the RNA and DNA.
What characteristics are used to group viruses?
Computer viruses are grouped based on what types of files they infect, how they infect them, and what stealth techniques they use to hide.
What is the group of viruses that infect the liver?
Viruses that cause liver disease are placed under the term 'hepatitis'. Other things can cause hepatitis besides viruses, heavy alcohol use can as well.
What group includes some members that can carry out photosynthesis bacteria or a viruses?
Bacteria
Which group of microorganisms have the property of highly resistant endospores under certain growth conditions?
Group C. I'm in microbiology right now. Group A are vegetative forms of most bacteria and enveloped viruses that are easily killed by disinfectants. Group B are more difficult to kill, like tuberculosis baccillus and unenveloped viruses. and Group C have highly resistant endospores.
