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Is it better to take a shower in the morning or at night? What scramble words can you make with these letters a i t o r? Is it illegal to destroy other people's mail? Still have questions?
Find more answers. Previously Viewed. Unanswered Questions. Is it advantageous or disadvantageous to use one pipette throughout the dilution process and why? Does a virus excrete? How long does hiv virus life inside the body? Can we kill HIV virus inside the body? What is a example of Immunity's?
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What human body system is affected by polio? Why is there no cure for HIV? What happens inside your body when you are attacked by a virus? What is role of virus in making vaccine? What does polio do?
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Is it illegal to destroy other people's mail? Still have questions? Find more answers. Previously Viewed. Why is it difficult to kill polio virus inside the body? Unanswered Questions. Is it advantageous or disadvantageous to use one pipette throughout the dilution process and why? What is the exposition in the story The Maguindanao Pearls? Viruses are among the biggest threats to humanity, with the current pandemic showing how these pathogens can shut down countries, halt entire industries and cause untold human suffering as they spread through communities.
Viruses have also evolved in such a way that they are difficult to kill. What makes them, including the coronavirus, so tricky to cure? Part of the problem is the nature of viruses themselves. They exist like freeloading zombies — not quite dead, yet certainly not alive. The odd makeup of these infectious agents is part of what makes them difficult to defeat. Compared to other pathogens, such as bacteria, viruses are minuscule. And because they have none of the hallmarks of living things — a metabolism or the ability to reproduce on their own, for example — they are harder to target with drugs.
Full coverage of the coronavirus outbreak. Antibiotics, which are used to fight bacterial infections, attack the bacteria's cell walls, block protein production and stop bacteria from reproducing. But they aren't effective against viral infections, because viruses don't carry out any of those processes on their own. Rather, viruses need to invade and take over host cells to replicate.
But a virus can't break into just any cell in the body. Instead, one of its proteins will bind to another protein — akin to a key fitting into a lock — which then allows the virus to hijack certain cells. With this outbreak, the coronavirus' so-called spike protein primarily fits "locks" that are present on lung cells, which is why COVID, the disease it causes, is mainly a respiratory illness. Once the invasion takes place, the cell in essence is transformed into a factory that churns out hundreds and hundreds of copies of the virus, based on instructions encoded in its genetic material — RNA, or ribonucleic acid, in the case of the coronavirus.
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