Why do viruses and bacteria attack humans?

Viruses and bacteria are very specific about their host. So all virus and bacteria don't attack human. Those who have receptor site for human only they able to attach and proliferate in human body.Why do they so! Well, it's all about chance, think about HIV, if you never come contact with the virus, it can't attach

How likely is it that aliens would be able to be infected by Earth-born bacteria?

We have no way to know.If you consider humans, we rarely get infections from our environment, in part because we have mechanisms that keep them out, and in part because we have effective immune systems. To the extent that our microbes circumvent out defenses to

Can beneficial gut bacteria survive freezing?

Bacteria in nature have adapted to diverse living conditions. From the hot steamy springs to harsh cold temperatures, they are able to live and multiply. However there is a favorable temperature range for every type of bacteria, in which they are the most jolly. This temperature is termed as Optimum temperature.The gut bacteria (mainly

What would happen if all bacteria and viruses disappeared suddenly?

Depends if you include endosymbionts. If you do all plants and animals would die immediately. If you don't death takes a little longer. Endosymbionts include mitochondria and chloroplasts - they are related to bacteria. Archaea would be the only living organisms left.

Can bacteria survive without moisture?

If the particular culture that you are interested in can be successfully freeze-dried, then, up to a point, the drier the better for keeping them in suspended animation. Over-drying, however, can damage cell membranes, by extraction of water molecules from structures that require water molecules,

What if the only aliens were bacteria?

Putting anthropocentrism aside, that would actually explain a lot of mysteries around the search for intelligent life. The issue is that there are so many existing explanations in regards to the Fermi Paradox. The abundance of explanations widens the scope of acceptable hypotheses, and despite the

How might gut bacteria affect the brain function in humans?

In many ways:Microbes can play games with the mindhttp://www.npr.org/sections/heal...

What would happen if all bacteria and viruses disappeared suddenly?

Depends if you include endosymbionts. If you do all plants and animals would die immediately. If you don't death takes a little longer. Endosymbionts include mitochondria and chloroplasts - they are related to bacteria. Archaea would be the only living organisms left.

What would happen if all bacteria declared war on humans?

Oh, DEAR!Help! Someone call the DOCTOR!!#drwhofanNo, seriously, we would all be in big trouble, Millions of Bacteria live in and outside our bodies, they are in the Air we breath, in the Food we eat and in the Water we drink. (It would be a short time before the bacteria KILLED everyone)Sounds like a MOVIE plot......Scott BaileyBlogger/Writer AD2018

Are there any bacteria which are harmful to us? How do they harm us?

There are many bacteria that are harmful to us. They harm us mostly by the toxins (poisons) they either excrete or that are released when our bodies attack them and destroy their cell walls. These toxins can have a variety of effects from causing diarrhea to destroying tissue they come into contact with. Some of these toxins

Can beneficial gut bacteria survive freezing?

Bacteria in nature have adapted to diverse living conditions. From the hot steamy springs to harsh cold temperatures, they are able to live and multiply. However there is a favorable temperature range for every type of bacteria, in which they are the most jolly. This temperature is termed as Optimum temperature.The gut bacteria (mainly

Why are bacteria classified under plants?

Why are bacteria classified under plants?Bacteria are not classified under plants.Living organisms are classified into two or three Domains:Archea, Eubacteria, Eukaryoteor prokaryotes (consisting of Archea and bacteria) and Eukaryotes which include all other living things.and then into one of six Kingdoms of life.The Kingdoms are Archaea, bacteria, Protista, Fungi, Plantae, and Animalia.

How likely is it that aliens would be able to be infected by Earth-born bacteria?

We have no way to know.If you consider humans, we rarely get infections from our environment, in part because we have mechanisms that keep them out, and in part because we have effective immune systems. To the extent that our microbes circumvent out defenses to

Can bacteria survive in vacuum?

Technically no..Bacteria or any other organism can't survive in vacuum. As there will be no O2 & CO2 (no air) for respiration. Here is the diagram depicting respiration

Do bacteria exist in space?

Tardigrades, or water bears, are one of the few organisms (not microbes) known to survive the vacuum of space.What's really weird is that just recently (talking in terms of months), crew members of the International Space Station found plankton outside

What would happen if bacteria became the size of humans?

What would happen if bacteria became the size of humans?There are two ways we can fantasize this happening. One way would be to take a bacterium and make everything in it larger - all the atoms and particles. If we did

Has alien bacteria been found?

No, we have not found any bacteria on other planets as of yet. However, several scientists suggest that microbial life on mars may be possible, especially after finding bacterial species thriving in the Atacama Desert in Chile. This desert is claimed to be one of the

If sugar feeds bad bacteria in the gut microbiome, then what about honey?

Most of the sugar we ingest is absorbed well before it hits the large intestine including honey which is largely glucose, fructose and sucrose (50/50 fructose/glucose) . Most of microbial flora is NOT bad; rather it is a balance of symbiotic and opportunistic organisms. Pathogens that cause GI infections tend to be self-limiting and are

Can humans survive without gut bacteria?

Of course not. The gut bacteria are crucial in many processes, from the digestion to some regulative functions of your body. We need them and they

Can humans survive without bacteria?

Mice can be reared in a laboratory environment such that they live only with known strains of bacteria. These mice are known as gnotobiotic (http://en.wikipedia.org/wiki/Gno...). Mice can even be raised completely free of bacteria and are called germ-free (

Could gut bacteria make me fat?

It can. Stay tuned because your are going to be hearing more and more the phrase

How is the ISS cleaned of bacteria on the inside?

A2A.This has been a major concern since the earliest days of spaceflight.The most common way of killing off microorganisms is by using UV light. Properly applied, this can eliminate 99,99% of organisms. To do this, astronauts utilize devices known as gloveboxes to decontaminate tools, equipment, and themselves - there

Can we live without bacteria?

The short answer is: No. The long answer is not really, though it has been tried. In order to test whether bacteria were essential, newborn mice were carefully raised in a completely sterile environment, fed sterilized food, and allowed

Is it possible that Life on Earth exists because an ancient space traveller left bacteria from their home planet here while exploring the Universe long ago?

Seems logical that Aliens could not have started life on Earth by accidentally or irresponsibly contaminating the surface with shed skin cells, bacteria or RNA, because the earliest life here was nowhere near that level of complexity.That said, yes there is an incalculable but inarguable possibility that life on Earth was seeded by ancient space travelers, we

Where can bacteria survive?

May i assume you mean

If an astronaut dies in space, will there be any decomposition of his body by bacteria?

If he dies in his space suit, then yes, he would decompose, because he still has bacteria and such within his body that would decompose him. It would use up all of the oxygen, however, so the decomposition would become anaerobic very quickly, going from respiration to

If a human died in space, what would happen to the bacteria inside their bodies?

Depends on where it is. In a sealed spacesuit or capsule, the bacteria would be happy as clams, reducing the body to

Why does a dead body rot but a live body doesn't?

When we die, there are two ways through which decomposition occurs:1. Putrefaction (breakdown of tissues mainly by bacteria but also some fungi).2. Autolysis (breakdown of tissues by the body's own enzymes and other compounds) .How does our body/ the bacteria in our body know that we are dead?Well, when

If you threw some feces in outer space, would the bacteria live forever or would they eventually die?

Nearly all of it would die. Certain bacteria can form protective spores when faced with severe environmental changes, which give them the wherewithal to survive extreme situations (including the vacuum of space), but sporification requires some degree of time and stimuli. Being

Is there any scientific basis for the five-second rule?

Generally it appears to be fine, although there are certainly exceptions.  I think the basic analysis is: things that like to grow in people generally don't live where where people drop their food.More specificallyAccording to http://www.cdc.gov/ncidod/EID/vo..., salmonella appears to be one of the top

What is the best way to reheat food and avoid bacterial growth?

Those are really two different questions. But I suspect you don't really mean reheat.If you reheat food from cold, any method that does it in the kind of timeframe that will result in you eating the hot food shortly will not significantly

How does bacteria on food survive through stomach acid to the point of making you ill?

The stomach empties fastest when full.  Food neutralises stomach acid so it is likely that many bacteria are not exposed to a low pH.  In experimental studies Vibrio cholera, which is the most acid sensitive of the intestinal pathogens has the largest infective dose

Do mayonnaise based foods like potato salad go bad faster than other foods at the barbeque?

First, it's worth reminding ourselves (again) that mayonnaise by itself is usually incapable of supporting the growth of bacteria (or the production of bacterial toxins) because it's composed of mostly oil, with the very small amount of egg yolk which contains ALL of the salt and blended with the

What are the best things to eat after 3 days of sickness and diarrhea to regain good gut bacteria?

Basically, every kind of bacteria is everywhere all the time, and our gut has become very good at sorting them out itself after hundreds of millions of evolution. It is like when you are first born, no thinking is required to set up your first successful gut ecosystem of bacteria.

Do mayonnaise based foods like potato salad go bad faster than other foods at the barbeque?

First, it's worth reminding ourselves (again) that mayonnaise by itself is usually incapable of supporting the growth of bacteria (or the production of bacterial toxins) because it's composed of mostly oil, with the very small amount of egg yolk which contains ALL of the salt and blended with the

What are the best things to eat after 3 days of sickness and diarrhea to regain good gut bacteria?

Basically, every kind of bacteria is everywhere all the time, and our gut has become very good at sorting them out itself after hundreds of millions of evolution. It is like when you are first born, no thinking is required to set up your first successful gut ecosystem of bacteria.

Do cats cause schizophrenia?

Do cats cause schizophrenia?It's complicated and we don't really know.At most, a parasite that infects cats that can also infect humans might have something to do with the condition in people with the propensity towards developing schizophrenia."There is good evidence to support an association between T. gondii infection [in

How many types of bacteria are present in the world?

Well, there is no exact number to mention. The bacteria is ubiquitous in nature can be seen in air, soil and water in all types of extreme environments of heat and cold. They are in thousands and many yet to be characterized.