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Viruses (biological)

~3000 answered questions
Parent Category: Microbiology
A virus is a small infectious agent that can replicate only inside the living cells of organisms. Viruses display a wide diversity of shapes and sizes, called morphologies. Generally viruses are much smaller than bacteria. Most viruses that have been studied have a diameter between 10 and 300 nanometres.

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I have the same problem. I hit my head 2 years ago while i was working at a bar ( i was drunk) the next day i woke up with a bump that never left. the bump seemed to get bigger as the years went by. I got operated twice but the bump came back. I had x rays, c scan and a biopsy done but it didn't sho…
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Adults are contagious one or two days before symptoms of the common cold start and approximately a week after. Children can be contagious even longer, as much as two weeks after symptoms have started. You are most contagious earlier in your illness rather than later. Some people can be infected with…
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To Avoid Catching a Cold or Flu 1. The number one best way to prevent the flu is to get a flu shot every year. 2. Keep your mucous membranes (nostrils, mouth, eyes) moist with proper hydration. 3. Clean your hands. When soap and warm water are not available, alcohol-based disposable hand wipes or …
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Why Flu Has A Season Most cases of influenza in the United States fall between the months of November and March, with the peak of infection rates in January and February. But that doesn't mean it is tied only with cold weather. Other places in the world have their flu season in warmer months. It ha…
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Catching Flu Twice in a SeasonYes, you can. But, it would have to be a different strain or type of the influenza-virus than you previously had (if you are otherwise healthy and have a well-functioning immune system). You would need to be exposed to a different flu virus to get it a second time becau…
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Life of Cold Virus While In the Air It is important to understand that viruses don't actually live. They are simply DNA or RNA material encased within a protein complex (a virion). They cause damage when they come in contact with a host's cells and are able to attach and take them over to replicate …
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Many types of virus can be identified experimentally either by there morphology using a scanning electron microscope(SEM) which allows for the detection of the number of capsomers and overall shape and symmetry of the virus. Or by an ELISA type testing based on antigen specificity.You can only ident…
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It's unusual to have zoster for a year, so I hope she is continuing to see a physician. I'm not sure if you meant that you were concerned all of the problems mentioned above were linked to one another, but I'm assuming you did not. Here are some suggestions: 1. Make sure her pain is under control; …
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No. Colds are caused by your body's susceptibility to a cold virus. While low humidity in a room might create the proper conditions for some viruses, a fan does not have any effect on the humidity level in a room, as a fan simply pushes air around, it does not alter the air like an air conditioner.…
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The common cold is the most common human disease. Well over 200 viruses are implicated in the cause. Rhinovirus caused colds are most infectious during the first three days of symptoms. A person with the symptoms has already caught the cold. The time before the infection begins and when the symptoms…
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The two main parts of a virus are Protein Coat and Nucleic Acid. The protein coat completely surrounds the nucleic acid and serves as a protective coating and aids in attachment of the the virus to the host cell. The nucleic acid can be either Deoxyribonucleic Acid (DNA) or Ribonucleic Acid (RNA).
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If you're using Win9x, boot into DOS and type scanreg /restore to restore the registry. Choose a backup that pre-dates the problem, if able. If using XP, you can do a system restore to fix it.If you find the info useful, Please Vote!!!
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the three types of viruses are injectors; which inject viral mRNA into a cell without entering the membrane, invaders; which enter the membrane and release viral mRNA next to the ribosomes, and infesters; which enter the membrane and infest the nucleus with viral DNA, then the nucleus makes viral mR…
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virus is obligate intracellular parasitic acellular microorganism, consisting of protein coat and nucleic acid DNA or RNA and may be enveloped or not..
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Bacteria are single-celled organisms that exist throughout the environment. They live in water, soil, and the air. Bacteria live in and on all animals and plants. Some cause disease, some are beneficial and some have no known impact on the animals they live on or in.Viruses are DNA or RNA, sometimes…
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Capsid is the covering around the DNA (or RNA) some viruses have an envelope around the capsid.  Some viruses do not make their own protein coat but utilize the membrane of the cell that they destroy - in this way they have a 'disguise' from the bodies immune system. Such viruses are the cause…
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Flu's Affect on Sperm Power No, it has no affect.
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There is no cure for rabies once you start showing the symptoms. If you get rabies shots before you show symptoms but very soon after you get bit they can stop the rabies. There are 6 known cases of people surviving symtomatic rabies.
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Influenza is caused by a virus infecting the body. The family of RNA viruses that causes influenza in humans is named Orthomyxoviridae. Flu most often spreads when someone with the flu touches items or people with their unwashed hands. It also is frequently spread through uncovered coughs or sneezes…
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It is caused by viruses not by bacteria.
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There are certain situations where it would be appropriate to get a flu shot after having had the flu. See the group of related questions below for information on these circumstances and the reasons this may be needed. The risk of problems with the flu, especially for those in high risk groups, far …
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The FLU constantly mutates into different strains. It is possible to get the flu more than once in any given year and even though the immune system has built immunity to one strain, it is possible to catch another.
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Also called the Seasonal Flu, the 'flu' is short for influenza. It is a viral infection which attacks the respiratory system. Some of its symptoms are coughing, sneezing, headache and fever. It is spread through contact with the virus particles directly from someone else, from contaminated surfaces …
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Answer You need to run these 5 essential steps to remove all the spyware on your computer. 1. Run Deckard's System Scanner (DSS) 2. Run Malwarebytes Anti-Malware 3. Run the anti spyware removal programs spybot 4 Run Superantispyware 5. Run a complete scan with free curing utility Dr.Web Cure…
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Growing Viruses   Viruses cannot be grown on an ordinary culture medium because they are not actually living organisms, but are more of a microscopic parasite that "lives" and thrives by infecting cells which then infect other cells and so on and so forth. Viruses can be cultured in l…
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Answer A computer virus is a small program that infects a computer without the user permission. It attaches itself to other files and quickly multiplies. It is strongly recommended that you use an antivirus program on your computer and that you keep it updated. This will prevent any infection…
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Mechanical digestion is the breakdown of food through chewing, mixing, or churning. Mechanical digestion occurs in the mouth and stomach. The food is physically torn apart through the teeth, tongue, stomach contractions, etc. This is counterpart to chemical digestion, where acids and other enzymes c…
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Viruses do not belong to any kingdom and don't contain any cells. Therefore, they are considered nonliving. In addition, viruses do not have the characteristics of life. It cannot respond to a stimulus. It cannot grow and develop. It cannot adapt to the environment. The only way to reproduce is to…
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Answer Well, the insulin a diabetic gets does not contain any bacteria. It is sterile. However, the insulin is made by bacteria, usually E. coli. Hope this helps! Some Stuff about the E.Coli Bacteria: • • The Bacteria E.coli used to produce insulin for those with diabetes • It's Inex…
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The Admiral virus is a trojan that is frequently referred to as Admiral.334 or DOS/Admiral.334. The Admiral virus can allow a hacker to gain total access to your PC, which can cause your PC to behave unexpectedly. The virus can lead to system instability and loss of data.
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It is called the capsid, and is usually composed of separate sub-units called capsomeres.
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Usually you (and health care professionals) go by your symptoms and by the known infectious diseases in the community at the time. If it is flu season and you have symptoms of the flu, it is likely that is the problem. Since the flu is treated the same, regardless of the specific type of flu, it is …
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Answer The two parts of a virus are the protective protein coating and the genetic material inside.A protein coat and a nucleic acid (either RNA or DNA)
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The lytic cycle is one of two methods of viral reproduction, the other being the lysogenic cycle. These cycles should not, however, be seen as separate, but rather as somewhat interchangeable. The lytic cycle is typically considered the main method of viral replication (reproduction), since it resul…
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Answer Which virus? The avian flu virus has a 4-5 day lifespan in the air and can travel 2-3km but is higly susceptible to disinfectants containing detergents.But which virus are you talking about?
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It depends on the region. In the southwest it is spread by several sources. Racoons, skunks, bats and coyotes. Never ever touch a bat dead or alive and always question why a skunk or raccon is wandering around in broad daylight. Most northern sates are not as affected by rabies and have only one str…
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Neurovirology is an interdisciplinary field which represents a melding of clinical neuroscience,virology,immunology, and molecular biology. The main focus of the field is to study viruses capable of infecting the nervous system. In addition to this, the field studies the use of viruses to trace neur…
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DNA or RNA and a protein coating
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You can get a virus by going on websites that contain avirus. But you would not know when the virus is in your desktops it can multiply depends what kind of virus is it when the computer slows down or something else, have a scan made by your computer when it is found delete or clean the virus.
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No. Life is defined in science with certain criteria. Some lists are slightly different, but a universal point of definition is that something living requires metabolism (the ability to create it's own energy). Virus are non living. They do not have organelles.
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The HIV virus was not created. It is believed to be a mutated form of a virus that exists in the animal kingdom, specifically among species of primates.
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1. Download and run firefox to protect your computer from future spyware attacks and pop ups which are coming in through internet explorer (Trojan downloaders, win32 ).Browser attacks aren't easy to spot because they piggyback on legitimate traffic that doesn't exhibit many obvious warning signs . …
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What is referred to in lay terms as a cold or common cold is called acute viral nasopharyngitis in medical jargon. This viral infectious disease is very contagious and spreads rapidly in most outbreaks due to the easy transfer of virus particles from person to person directly or by indirect transfer…
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Viruses infect the host cells by mainly injecting their Genomes (DNA or RNA) into the host cells. Viral RNA (in case of HIV) converted (reverse transcribed) to form DNA. These DNA get access to the nucleus of host cell and most of the time integrate the viral genome into the host genome. So the host…
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The effect of chrysene to the skin is permanent pigmentation. Contact to this will irritate the eyes and if inhaled, will irritate the nose and throat.
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That is a very good question, and is a matter of debate. It does not have the minimum requirements to be "alive", like a cell membrane, nucleus, enzymes and biomolecules. But on the other hand, it does have genetic material that is coded to replicate itself using a host, i.e. another living cell. …
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A virus is non living as according to the modified Cell Theory, cells are defined as the basic building blocks of life, while viruses are not made up of cells. In fact, a virus is nothing more than a protein capsid encapsulating genetic material (either DNA or RNA), hence a virus would more correctl…
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Yes, rabies is transmitted through saliva. If the animal licked it's claws then there's a possibility that you might get rabies. Do not wait for symptoms. See a doctor immediately the same day you got scratched.
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The lytic cycle is when the destruction of infected cells and its membranes is taking place. This usually takes place within the host DNA.
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Get Vaccinated for the Flu As Soon As Possible."Prevention is the best medicine" and vaccinations are the best method for prevention of influenza.UPDATE For the 2011-2012 flu season: For the 2011-2012 flu season in the US, as in the 2010-2011 season, there is only a need to have one vaccination for …
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Rabies (Latin: rabies, "madness, rage, fury"), a.k.a. hydrophobia is a viral zoonotic . acute encephalitis (inflammation of the brain) in mammals. In non-vaccinated humans, rabies is almost invariably fatal after neurological symptoms have developed, but prompt post-exposure vaccination may prevent …
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There is no treatment for rabies, though there is a vaccine which can be administered before symptoms start which usually prevents the virus from reaching the brain.
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the origin of viruses are from other people and other systems
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Well i just got Antivir and it automatically downloaded itself AND it got past my security. i looked up Antivir and it said something like rogue-virus and it is sorta a scam or fake virus program just ot get your money. It's hard to find the definition because Antirvir advertises things that make th…
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That depends. All viruses have a marker that binds to a specific site on a cell. For example, HIV virus will only be infectious to humans because only humans possess a cell with the correct binding sites.
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When it comes to the rabies virus, it cannot live outside the body of the vector host for more than a few seconds. The moment the virus is put out of the salivary glands of the animal, the virus will die. Rabies is affected by temperature and moisture similar to other viruses.Aerosol transmission is…
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You may suffer from dry mouth and extreme thirst and eventually start to hallucinate. People infected with rabies need treatment ASAP. Rabies has a very high fatality rate but is very uncommon these days.
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Shelter, water, energy sourcePlants would need Sun (energy), waterboth would need their own specific living condition
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living
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A virus recognizes target cells by searching for proteins that are similar to those in the virus cell. Once spotted, the virus binds to these proteins and injects DNA and RNA into the cell.
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Go to the doctor. You may have an STD.
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it is called non living when it is present outside the host living cell and it is called living when it is present in the living cell
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No. Viruses are not composed of cells.
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Many professional people believe that eczema is associated with dry skin, allergens, stress, etc. However, as a sufferer, I personally believe that it is caused by a virus, most probably transported via insects or flies. I'm sure mine was started right after a mosquito bite on my calf. You cannot ki…
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by the time hr/she is 12 weeks old then only once a year
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Viruses do not have all of the characteristics of living things. They consist of a protein coat which contains either DNA or RNA. They are not made of cells. They have no cellular structures. They do not require nutrients. They do not have metabolism. They do not grow or develop. They do not reprodu…
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Germ on the go? Actually it's A Sick Chuter...really dumb joke....
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Cancer, flu, polio, Ebola, and H1N1
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Answer Everbody who has had rabies has died, except for one person. The virus takes over the brain and re-wires it, so that your signals to the body are messed up. It can make you throth from the mouth, and have moments of insanity, and have a fear of water. The 15-year-old girl who survived in 2…
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Viruses can be grouped according to family, structure, or name. It all depends on what you want to know and you haven't made that clear. There are ssRNA viruses that are also retroviruses, that are also enveloped viruses, that are also HIV. And there are ssRNA viruses, that are also retroviruses, t…
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i think the answer is A. Helper T
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Usually. See the related question below about the symptoms of the flu.
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20 sided ( or facets) vertex (12 evenly spaced corners)
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David L. Smith
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Answer... NO According to the KAPLAN's explanation of AAMC MCAT practice test CBT 4, viruses can have cell walls (question B). Either they are wrong, or the rigid coating of a virus is called a cell wall though the virus itself is not considered a "cell." I will look for another source on this, but…
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HIV is the beginning stage to AIDS. The introduction of the Human Immunodeficiency Virus (HIV) is what starts the condition. A human can carry this virus for up to 12 years (or longer with treatment) and eventually it will manifest as Acquired Immunodeficiency Sydrome (AIDS). HIV and AIDS are the s…
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The capsid surrounds the genetic information of the virus (protects the genome from the environment and aids in attachment of virus to host cell). The capsid is usually inside the viral envelope (which facilitates attachment to host cell receptors), unless the virus is naked (not all viruses have vi…
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The virus is named after the Ebola River Valley in the Democratic Republic of the Congo (formerly Zaire), which is near the site of the first recognized outbreak, a mission hospital run by Flemish nuns, in 1976.
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The structure of the SARS virus consists of an orb completely covered by appendages that look strangely like ice-cream cones with a scoop of ice cream on top. See the related link for a drawing.
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Each type of virus looks different: they come in many shapes, such as rods and ovals.
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Viruses are particles of nucleic acid, protein, and in some cases, lipids.
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Note that rats almost never carry rabies and are not considered a serious rabies risk. Rabies transmission from rats is extremely rare, not because rats have a dry bite, but because they almost never carry rabies, presumably because rats do not survive the attack of a rabid animal. (source:www.ratb…
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Spirochetes, diplococci, and cyanobacteria.bacteria,fungi and virus
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You should get flu vaccinations every year because the flu is still out there and prevention is the best method. Sometimes, if you do get flu vaccinations, there is still a chance for you to feel mild flu symptoms as a reaction to the vaccine. If you do get sick here are some medications or solution…
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Turn the computer off.
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Answer You need to run these 5 essential steps to remove all the spyware on your computer. 1. Run Deckard's System Scanner (DSS) 2. Run Malwarebytes Anti-Malware 3. Run the anti spyware removal programs spybot 4 Run Superantispyware 5. Run a complete scan with free curing utility Dr.Web Cure…
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This is called a host cell. In the beginning, a virus will attach itself to the host cell and release its genetic material into it. This genetic material interferes with the host cell's enzymes which cause them to form parts in which will create a new virus.
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Gram staining is a technique used to helpdifferentiate bacteria by their ability to hold onto a stain. Also the staining process makes it possible to see bacteria clearly under a microscope. Simply put, Gram staining works like this: An initial stain has been applied to a fixed bacterial smear on a …
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Put simply - yes. Some strictly aerobic organisms will not grow in a pour plate. They may, however proliferate on a streak plate. Also consider the posibility of experimental error. The culture may have been added to the molten agar when it was too hot for the organisms to survive.
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Usually not the same exact one that you had previously, if you are an otherwise healthy person with a healthy immune system. An example is the flu. Influenza is caused by a virus. If you are exposed to an identical version of the flu that you had previously after you have recovered fully from it the…
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the answer is the innner core and the outer core
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They are caused by different viruses and have slightly different symptoms. See related question below for the symptoms of the A-H1N1/09 "Swine Flu". The symptoms of the cold and flu can be hard to differentiate, sometimes not even possible without a specific laboratory test to determine which viru…
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Reproduction
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something that has to do with virusessomething that has to do with virusescorrect : it is the cycle where a virus lays dormant inside the host cell until it is triggered to become active and then go into the lytic cycle.
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Lysogeny is characterized by integration of the bacteriophage nucleic acid into the host bacterium's genome. The newly integrated genetic material, called a prophage can be transmitted to daughter cells at each subsequent cell division, and a later event (such as UV radiation) can release it, causin…
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this was found on http://www.mass.gov/dph/cdc/factsheets/fssmallpox.htmthis is what it read:Currently, there are only 2 known stocks of Variola (smallpox virus), which are held in Atlanta and in Russia. There is a concern that the smallpox virus might exist elsewhere and be used in a harmful way. Th…
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A protective shell around a virus
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The flu is scientically known as Influenza
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