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Viruses (biological)

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.

1,710 Questions

How long does the lytic cycle usually take?

This will vary according to the type of virus and according to the host cells.

Do viruses have locomotion?

The environment! In other words, they have no source of self locomotion. They just float and bump into objects. If the object has the right chemistry, then it will cause the virus initiate it's own set of docking procedures. The virus is an opportunist. It injects it's DNA into a host cell because it finds the lipids pores which you could say are the secret doorways for viruses. Without going to far into detail, different viruses look for different kinds of cells based on what is on the surface of the cell membrane. Even if a virus comes into contact with a cell, it might not activate because the cell didn't have the right glycoproteins.

What can viruses not infect?

Proteins,carbohydrates,nucleic acid and some have Lipids.Virus are also made up of those as other animals.

Viruses are composed of two main parts: an outer protein covering called a capsid and an inside core of either DNA or RNA. Not both DNA and RNA. Some of these have an envelope over the capsid. The ones that do not are said to be naked. The proteins in the capsid allow the virus to attach to the "docking stations" proteins of the host cell. The naked viruses are more resistant to changes in the environment.

Some naked viruses include poliomyelitis, warts, the common cold, chickenpox, shingles, mononucleosis, herpes simplex (cold sores), influenza, herpes viruses and HIV (AIDS).

Some enveloped viruses include norovirus (stomach bug), rotavirus and human papillomavirus (HPV).

The envelope can be damaged by freezing temperatures, chlorine, and phenol. If damaged the virus cannot infect.

Viruses are not an organism at all. They are not alive. They are nonliving. They are like cockle burrs that "grab" hold of your clothing or a dog's coat. They are hijackers. Once they get attached to the cell of a living cell, they can take it over and "make" the living cell produce virus particles instead of cell parts. These particles can assemble into more viruses and then they break out of the cell (killing it) and begin the process again. They cannot make more viruses on their own.

They are very small and can be considered ultramicroscopic. We were not able to see them with the best light microscopes as we could bacteria (prokaryotes). We have to use an electron microscope to see them as they are that small. This was not available until recently.

Scientific name for hantavirus?

Pyrexia myalgia purpura pneumonia with cardiac and renal involvement with ten percent incidence of viiith nerve damage
Pyrexia myalgia purpura pneumonia with cardiac and renal involvement with ten percent incidence of viiith nerve damage

Is it a difference between genital herpes and a herpes virus?

One notable difference is the method of contraction. You can contract genital herpes by sexual contact ("sexual" being short-hand for skin-to-genital contact) with someone who is him/herself infected with genital herpes. Shingles, on the other hand, is a recurrence of chickenpox. It isn't contracted by sexual contact except in the rare instance where you originally got chickenpox by having sex with somebody with chickenpox. You simply can't spread shingles to somebody else if you have shingles. What you WILL spread to them is chickenpox . . . but only if they haven't had it yet. Shingles is also less likely to recur than genital herpes, which typically breaks out between three and five times a year. You can potentially have shingles and then never get it again. For what it's worth, I had "genital" shingles as well, which was misdiagnosed as genital herpes, notwithstanding my protestations that my and my wife's lifestyle choices made genital herpes very unlikely. (I think the doctor just assumed I was lying about having been monogamous.)

Can coronavirus kill you?

Yes. As of this writing, it has killed over 7,500 people worldwide. Older people and people with pre-existing health conditions are most likely to pass away from the virus, but everyone can become infected by it and transmit it.

Do I have the virus?

I am free from corona-virus and never effected from this pandemic disease and the biggest reason why I am free from this corona-virus that I am following strict rules and regulations.

Cleaning my hands, follow every rules in lock-down and never going outside without permission or masks.

I am busy in my car cleaning Perth website from which I free from any mental issues and depression. I want to say that only following rules are not enough right now, we all have to keep our body both physically and mentally fit.

Thanks!

Why do some people who receive flu vaccines still get the flu?

Unless you are exposed to the flu before the vaccination is effective, it would not actually be the flu that causes these flu-like symptoms after a vaccination. It is not uncommon for symptoms that are flu-like (mild fever, achy muscles, headache, malaise, etc.) to occur immediately after receipt of a flu vaccination. This is not an indication of a viral infection, but, rather, these symptoms are due to the body's normal immune response to the vaccine and should go away within a couple of days. Since it is the normal body reaction to a vaccination, you would not be contagious to others who are healthy, either.

Vaccines trick the body into thinking there is an infection when there isn't. This causes the immune response that begins the process of creating the antibodies that will be able to inactivate the type of pathogen contained in the vaccine if you should be exposed to the same one in the wild after the vaccination has taken effect. [This takes usually around two weeks time after the inoculation in otherwise healthy people who are adults or children over 10 years old. Children 6 months old up to 10 need a series of vaccinations that take longer before effective. Babies under 6 months old cannot be vaccinated because their immune systems are too immature.] The immune response not only causes antibody production, but also results in the other germ-fighting mechanisms (which can include slight fever and the other flu-like symptoms).

Otherwise healthy people are not able to catch the flu from flu vaccinations because the pathogen in the vaccine is either totally inactivated/"dead" or is severely weakened so that it is not able to cause the infectious disease.

See also the related questions below for more information about the processes of an immune response.

What are the symptoms in a horse for the flu?

The signs of tetanus (also known as lockjaw) in horses are: The inability to open mouth to eat or drink; Eyes wide open and ears rigid; Stiffness in the entire body; Extremely sensitive to sights, sounds and/or touch; Convulsions and eventually death. Scroll down this page to a link to a website that explains signs, treatment and prevention of tetanus in horses.

What happens to a host cell when a virus replicates inside it?

the virus is integrate inti the DNA of the host cell and is latent.

What causes headache in dengue fever?

As malaria parasite inter in blood stream and infect and destroy red blood cell. due to this symptoms like chills, headache occurs.

Which mask should I buy for protection against the Coronavirus in India?

The N95 cover is exceptionally efficient because it channels air pollutants without any problems. While 95% of air toxins can be easily isolated through these veils as indicated by experts, people suffering from respiratory illnesses should not use these covers because they need to face the real consequences. The N95 screen here and there makes it hard to relax. Kids should not use the N95 veil. These covers do not provide complete protection against coronaviruses. You may find it hard to take the N95 cover and full protection is not guaranteed in the same way.

My strongest suggestion is to use the covers carefully as they are sufficient to repel 100% of the coronavirus toxins. They can do a lot without this spread of infection. The wearers in these covers have no breathing difficulties. Off-chance that it fits snugly for the face, the careful cover protects you from coronavirus.

Perhaps N95 can protect you from coronavirus but experts don't know about it because they can cause shortness of breath.

You can easily find n95 mask on Pharmenve

What is Pharmenve

PharmEnvee is a global biotech pharmaceutical marketing company bringing targeted products to a global audience. We specialize in building commercial strategies to distribute innovative biotech, pharmaceuticals, and medical devices worldwide. Our team of consultants is market specialists dedicated to identifying distribution opportunities while carrying out appropriate marketing plans tailor-made to each product. One of our goals is to improve patient access to cost-effective biotech and pharmaceutical products.

What antibiotic is used to treat the flu?

You would not be given any antibiotic for use to treat a cold or flu. They are both viral infections, not bacterial infections. Antibiotics are only for bacterial infections. If you have a secondary bacterial infection with a viral infection, you might be prescribed an antibiotic to treat that secondary infection, but not for the virus itself.

What is a geographic difference between malaria and Ebola viruses?

In the long term, HIV is more lethal. In the short term, Ebola is far more lethal. Ebola kills much more rapidly, but it doesn't kill everyone. Some people recover. HIV kills much more slowly, but it kills virtually everyone that it infects.

What are steps of the lytic cycle of viral reproduction?

The four steps of a virus are simple...

1.Attach (a virus cell hooks on a good cell)

2.Invade (the virus gets to the point of putting its own D.N.A into the cell)

3.Copy ( it makes copies of itself)

4.release (the new viruses break out of the cell)

then the prosses repeats and more and more viruses from....

Why do some scientists say that viruses are not alive?

Some scientists think that viruses are not living organisms due to how simple they are. Viruses are usually nothing more than a strand of genetic coding with a protein coat. This makes them far more simpler than the simplest of organisms that use the standard cell structure which is rather complex.

What does the Ebola virus do to the body?

It is a hemorrhagic fever that causes you to excrete blood from bodily orifices and also you will vomit blood.

Signs of Ebola are fever, intense weakness, muscle pain, headache and sore throat. Which are followed by rash, diarrhea, weakened kidney and liver functions.

The incubation period is 2 to 21 days. At the moment there is no treatment options at all. The mortality rate is between 25% and 90%. It is transferred via blood, organs, and secretions of one that has it.

Why are antibiotics helpful for treating the common cold?

No antibiotic has ever helped to cure the cold. Cold or common cold is caused by virus infection. Antibiotics should not be used to treat the cold. That should be taken as crime against humanity to use antibiotics to treat the cold.

What shape are viruses that attack bacteria?

A virus that attacks bacteria is called a "Bacteriophage"

How is the lytic cycle different from the lysogenic cycle?

Answer this question… The lytic cycle results in the immediate death of a host cell.

What is the life span of the Ebola victim?

It can be infectious in body fluids (such as blood) up to several days at room temperature.

Can a camel get rabies?

Yes, everything that is a mammal can get rabies.

What is the h1n3 virus?

H1N3 is a subtype of the Influenza virus also known as the swine flu. If left untreated it might cause death.