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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
Who discovered the rabies vaccination?
im pretty sure it was Louis Pasteur or he just gave a lecture on the providential of rabies ..1885
What is a virus called which enters a cell and remains inactive for long periods of time?
A virus that remains inactive for a time is said to be lysogenic.
Who is responsible for the dangerous Coronavirus "Covid19"?
In Other words, China is responsible for "Covid-19"
What are the steps the virus pertussis uses to reproduce?
In general, viruses go through the following five
1. Adsorption, the attachment of viruses to host cells.
2. Penetration, the entry of virions (or their genome) into host cells.
3. Synthesis, the synthesis of new nucleic acid molecules, capsid proteins, and other viral components within host cells while using the metabolic machinery of those cells.
4. Maturation, the assembly of newly synthesized viral components into complete virions.
5. Release, the departure of new virions from host cells. Release generally, but not always, kills (lyses) host cells.
Is the Ebola virus more common in males than females?
The Ebola virus affect men and women the same but because women in Africa care for their sick relatives they are more likely to get it. They also wash and handle the bodies before burial. Those are customs that the people have.
Is loss of balance a symptom of the flu?
A loss of balance can be the result of Eustachian tube or ear inflammation, trapped fluids, or infections which can occur with upper respiratory infectious disease like the flu. It is not a common symptom, and should be evaluated by your physician to determine the exact cause and treat an infection or other reason for your problems with balance. This can be caused by many different conditions and problems and should be reported to and possibly examined by your health care professional without delay, since unbalance can cause accidents and injury and you may have a condition that needs specific immediate treatment.
virus consist of two layers: 1. its inner layer is made up of DNA. 2. whereas its outer layer or covering is made up of PROTEIN.......and such virus is known as BACTERIOPHAGE VIRUS
It is grown in living cells and the antigens that cell makes are what will be in the vaccine. These then are purified and stabilized. The Salk vaccine involves using viruses that have been inactivated by using formalin. Heat would not inactive the virus.
Does the Golgi apparatus make proteins?
No.
The Golgi apparatus of a eukaryotic cell primarily modifies proteins delivered from the rough endoplasmic reticulum. It is also involved in the transfer of lipids inside the cell and the formation of lysosomes.
A cell's ribosomes are responsible for protein production.
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 kill the virus with those ointments, but only help to soothe the symptoms. They come back when you stop using the ointments, because the virus is still there. It can also have a relation with the liver.
What organelles of cells assemble HIV?
The virus "hijacks" the nucleus and makes this organelle "order" new virus parts and assembles them.
A flu virus is an organism that causes a respiratory infectious disease in animals and man. This type of virus attacks the respiratory system and gives you the symptoms of the flu. Influenza viruses such as these are not living organisms, like bacteria and fungi, but they are inanimate particles that can attach to our cells and make the cells start reproducing the virus instead of the cell's ordinary job for the host animal. They can not reproduce without a host's living cell. A virus is a "package" of proteins and DNA or RNA that can act as an organism to "hijack" your cells/the host's cells to replicate more packages like itself.
How can you get rid of body aches from the flu?
If you are otherwise healthy, Ibuprofen, or another over-the-counter (OTC) NSAID (non-steroidal anti-inflammatory drug) will help. Ask the pharmacist at your drug store for recommendations for your use. Although these won't completely rid you of the flu, they help keep aches and pains at bay for up to 4 hours. Follow the label directions carefully as some of these drugs have serious potential side effects if used improperly, many are very hard on your stomach so if you have problems with acid indigestion, etc. ask the pharmacist or your doctor about this and which type would be best for your use or if you should use them at all.
Aches with the flu are caused by several things, one being your lymph system inflammation from the infection and immune response. Stretch your body using gentle yoga poses if you feel well enough. Also, drink lots of WATER, WATER, WATER to flush the toxins out of your system.
Try a warm bath or use a warm moist compress or heating pad over the worst area if your fever is not too high. Wait to do this if you have a fever of over 101F degrees (38.3C). This relaxes the tense and inflamed muscles, and gets your blood circulating to help move the toxins out of your body and move the antibodies your immune system has produced quickly to the area of infection.
What invades th body and quickly multiples?
Viruses invade the body and quickly multiplies. Some types of cancer cells also multiply quickly.
What if you used cowpox to prevent the flu?
It wouldn't work. You must introduce the specific viruses that cause influenza to prevent the flu. Cowpox vaccines would be used for preventing cowpox (or some infections by closely related other poxviruses).
A similar virus to cowpox virus is Vaccinia virus which is the type of pox virus that was used to produce the vaccines originally developed and used to prevent smallpox. Smallpox is now eradicated from the wild thanks to worldwide use of smallpox vaccines made from Vaccinia.
Despite its name, cowpox virus does not infect cows, it infects mice, rats and other rodents.
Replication of Viruses
A virus "replicates" [the term often heard in place of "reproduces"] inside a host cell with the process called the Lytic Cycle. The details of the steps of the Lytic Cycle are in the related questions below in the Related Questions section.
Basically, once the virus has found a suitable host that is made up of the type of host cells that its virus type uses (i.e., plant, animal ~ including insects to humans, or bacteria), it attaches to the host. Then the virus implants the "key" to its genetic makeup into the cell. When this DNA "key" (or RNA in some viruses) of the virus is inserted into cells of a host, it allows the cells to be hijacked and, at the appropriate time for that particular virus, it instructs the host to make more virus particles. The virus can either lie dormant, such as in some cases of the HIV/AIDS virus, or immediately become active and command the host cell to start the replication processes.
If the virus becomes active, it can then turn the host cell into a 'factory' for making more viruses. The result usually, but not always, is that the host becomes ill because the cells are no longer functioning as they should for the host while working on the job of the replication. With each cycle of replication, the virus particles can invade even more and more cells until the host's immune system (or other defense) can catch up to kill the invader.
Mutations
Since they are non-living sub-microscopic organisms and not actually living animal or plant organisms (like bacteria and microscopic fungi are), viruses must combine with the living cells of hosts and change the genetic material in those host cells to cause them to begin to reproduce new virus particles, as described above, with the energy and raw materials being provided by the host. In addition, sometimes that assimilation can result in a mutation of the virus particles themselves that will change the makeup of the particles to a new strain of virus. This new strain can then also be replicated by the host's cells when that revised genetic material is inserted into them. Some viruses, like those of the common cold, can mutate very rapidly and this is one way they bypass the immune system's defenses and prevent our future immunity.
Viruses have a capsid, a covering on the virus that is made up of proteins (in different combination dependent on the strain). The mutation can alter the combination of these proteins in a way to evade the antibodies that were developed for the original protein combination. That will cause the host's immune system to start all over to have to develop new antibodies to fit the new and different capsid "shape" shedding and spreading more virus particles in the meantime to new hosts.
Conceptually, a virus is the blueprints for making a virus from a cell. Normally, the cell makes cells. When infected, however, the cell then makes viruses. More or less.
Fifth disease is similar to chicken pox or other type viral infections. It is most commonly seen in children but some adults can be affected. A hallmark of the condition is a lacy type rash that starts on the trunk and spreads to the limbs. Typically the rash lasts only a couple of days or so but can reoccur. Especially in adults severe body aches are common.
Latent Viruses: some viruses can be latent. That means that after the virus enters a cell, its hereditary material can become part of the cell's hereditary material.
What part of an enveloped virus would be antigenic?
The envelope would be antigenic. 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.
Why is A difficult to classify virus as a livingthings?
It is difficult because viruses lack the ability to replicate themselves and theey lacks energy metabolism and other pathways that living things have. Viruses are totally depending on their host. If they want to replicate, they have to infect the host.
Which has worst side effects the flu or the flu vaccine?
The flu. One of the side affects of flu can be death.
I suppose that you think to tobacco mosaic virus, but the chemical name is longer.
See the link below.
