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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
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.
How are viruses classified by nucleic acids capsid shape and the presense of the envelope?
The baltimore system of virus classification can be used to classify viruses based on nucleic acids. Caspid shape I'm not so sure of, but the ICTV system is a good starting point.
How are animal and non animal virus different?
Animal viruses don't affect all animals. One example is how rabies from bats isn't seen in all species of animals around (eg.) vampire bat feeding sites.
Also, human viruses don't only affect humans. An example of this is how swine flu can be passed from pigs to humans and back again.
Viruses all pretty much work the same, with virus DNA being inserted into a host cell, then replicating, and causing different effects depending on the type of virus and type of cells targeted.
No I learned about them in science. It is caused by an eating disorder if you have ulcers go to your doctor immediately.
Why are viruses difficult to target therapeutically?
Viruses use their host's metabolic enzymes and some viruses mutate very quickly so they can easily become resistant to drugs.
Viruses are almost biologically inert until they infect a cell.
yes, i hate it.
i was trying to go to Winter jam for 2 years straight but i unfortunately had the flu.
Viruses are so very small that they couldn't be seen by even the best light microscope. All people had to go by was the effects that they saw not the things causing the effects.
Can Listerine protect against Coronavirus?
With the rapid development of new coronaviruses, many countries have fallen into a crisis of closure, which has seriously affected our normal lives.
We know that the main route of transmission of this virus is droplets of the respiratory tract, so everyone wearing a mask is a very effective protection method, but some unscrupulous businessmen have pushed up prices and sold an ordinary mask to US $ 20, which made many people unable to burden.
We have cooperated with a medical institution to purchase a large number of low-cost KF94 masks. If you need to purchase a large number of masks, please contact us to ensure that you will get masks at a reasonable price.
Where can you find a diagram of the process which caused the 1918 Spanish flu?
See the related links below for links to various sites (some with diagrams) about the 1918 Spanish Flu.
"The influenza pandemic of 1918, also known as the Spanish Flu, remains the most deadly outbreak in recent history. Death estimates range from 20 to 40 million people worldwide."
Why do children die from the flu?
Not only children but adult too, if you do not treat yourself properly then you may die, ask your doctor or anyone you know with medicalexperience to help you answer your questions.
When the viral load is undetectable what are the chances of transmission?
The transmission chances are lower but not zero.
Why is a virus considered alive and a rock is not?
Very good question. Viruses are not considered alive by many (I might even go as far as to say most scientists wouldn't consider viruses alive, but I'd have to ask more of them first to be sure). Neither is a rock! Those that think viruses are alive are, as you have said, suggesting pretty much anything in the world can be considered alive. If a virus is alive, then by folding a piece of paper into a paper aeroplane I have created life. A paper plane alive? Absurd!
Ridiculous really isn't it?
Viruses aren't alive. They're just molecules that happen to react in a certain way to seem alive to anyone that hasn't studied a biological natural science for several years. But once you understand what happens on atomic and molecular scales, you realise they're not alive at all. No different from a molecule of glucose. It goes is, something is done to it, and it comes out.
The only reason a Virus would be considered alive is because they are structured in such a way as to allow them to be reproduced, and contain proteins with the ability to influence the chemical machinery of cells in other living things.
Can you catch the flu from someone who has just gotten over the flu?
The recommendations generally applied are that if there is no longer any fever (without using medicine to reduce fever) for a full 24 hours, you should no longer be able to infect others. Use a thermometer to check for fever. To be safe...get your vaccination and continue to use good hand washing and other preventive measures.
