How do the bacteria that inhabit the human body survive?

People's guts are not born with bacteria, and babies need to eat at least their first mouthful of breast milk to form their own gut flora in the gut.

No matter what you eat, food will contain a variety of bacteria, however, as long as it is cooked, the number of bacteria on the food is below the minimum requirement that can cause illness.

The bacteria have been baptized through the digestive juices, and the remaining dead strains eventually find this foreign peach source, which is then conjugated with selection factors such as temperature, intestinal pH, human leukocytes.

and useful probiotics that are occupied due to adaptation.

Deadly bacteria grow only because the water is dissatisfied with the excess white blood cells and gradually develops a unique hybrid flora difference between the proportions of the external flora. One reason why breastfeeding is superior to cow's milk is due to the ratio of protein, which cows are not easily digestible, and the protein clots formed are easy to the intestines and are not conducive to the formation of healthy intestinal flora.

Therefore, it is not an intestinal environment suitable for the growth of bacteria (at least not all bacteria), which grow as bacteria to form the intestinal flora, but the various chaos and eight bacteria outside, enter the intestine, in the intestine, the unique environment of the intestinal environment is selected to form the unique flora of the intestinal environment.

Not all bacteria in the gut are beneficial.

However, when the human body is really in a lot of trouble, the immune system.

Still without inhibition, the secretion secreted in the microflora does not impair the growth of pathogens without the human body. The most extreme condition in which the human body is losing blood, the peripheral circulation reduces the intestinal blood **, in order to give the cardiocerebral system, this time, even if it is usually penetration, it will reveal the face, causing sepsis through the intestinal blood.

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Bacteria can invade the human body with various portals, such as **, respiratory tract, reproductive tract, urinary tract, etc., causing infection after invading cells, such as portals in the case of invading the body, the corpse after invasion settles for local growth, usually with their own specific parts and specific sensitive cells. For example, influenza viruses.

in respiratory epithelial cells.

the air in which it multiplies without infecting other organs; Injured bacteria enter the intestine in the intestine in response to a lack of lymphoid tissue, called lactate mainly in response to multiplication; Hepatitis viruses mainly invade hepatocytes; Hunger of the invaded brain tissue; The immunodeficiency virus invades lymphocytes in the blood.

The lesions formed by the pathogenic growth of this disease spread directly to adjacent tissues, but in terms of incidence, the pathogenesis finally invades the connective tissue.

The lymphatic vessels are drilled to reach the regional lymph nodes, which then follow the lymphatic ducts into the blood circulation. If it is a pathogen of an insect, it can also be done by passing through the insect.

Parasitic symbiosis and multiplication through nutrients in the human body are more reliable bacteria and beneficial to the human body.

They live on human beings as the basis for their survival, depend on us, and will also die because of us. This bacterium is self-contained, and it will not be very harmful, on the contrary, it will have some benefits.

Survive by absorbing nutrients from the bloodstream. The nutrients in the blood can provide them with sufficient survival materials.

It is very good at finding a suitable environment for itself, and once it finds a suitable environment for itself, it will continue to reproduce and let its offspring appear quickly.

Eating plastic waste, cleaning up oil spills and detecting tumors, bacteria are microbes that are helping us change the world.

1.Making graphene.

Scientists have discovered a way to produce graphene using bacteria. Graphene is a nanomaterial composed of a single layer of carbon atoms with extraordinary properties. Graphene is strong, flexible, and electrically conductive, with the potential to revolutionize electronics, but it is still difficult to use.

Anne S., University of Rochester, New YorkProfessor Anne S Meyer said: "For practical applications, you need a lot of graphene".

Her team uses a bacterium called shewenella to produce large quantities of thinner, more stable graphene.

2.Clean up the oil spill.

The 2010 BP oil spill, the largest oil spill in history, dumped nearly 5 million barrels of oil into the Gulf of Mexico. Bacteria play an important role in reducing the impact of spills and can be used to reduce disasters in the event of any future disasters.

3.Detection of arsenic.

Scientists at the University of Edinburgh have developed a low-cost biosensor that uses bacteria to detect unsafe levels of arsenic in drinking water. Arsenic contamination poses a health risk to millions of people around the world, leading to cancer and death. The bacteria are genetically engineered to fluoresce in the presence of arsenic, and biosensors are attached to smartphones that display an easy-to-read pattern to show the level of the element.

Bacteria do not cause harm to human health in people's lives, but if the body's resistance is relatively weak, it can easily cause infection.

Bacteria actually do not exist in our lives all the time, but when the content of bacteria reaches a certain level, it will be harmful to our health.

Even if there are sterilized tap water and detoxified dishes and chopsticks, bacteria are everywhere, and although the bacteria may be temporarily killed in places where the temperature is slightly higher, the bacteria multiply very quickly, and when they cool down, they will be produced in a short time.

Bacteria also have a great influence on human activities. On the one hand, bacteria are the causative agents of many diseases, including tuberculosis, gonorrhea, anthrax, syphilis, plague, trachoma and other diseases. However, bacteria are also often used by humans, such as the production of cheese, yogurt and wine, the manufacture of some antibiotics, and the treatment of wastewater.

Bacteria are everywhere in life, and human beings can be safe and sound, all thanks to the protection of these "armies".

Well, this world is full of life, and bacteria are invisible to the naked eye in the microbiological world, and bacteria are everywhere in the microbiological world.

Yes, germs are everywhere. The living environment of various bacteria is also different, there are psychrophilic bacteria and there are also thermophilic bacteria.

Bacteria are everywhere, and many bacteria can't be killed after 150.

Yes, unless it's in a special sterilization instrument.

Yes. Even if I have killed the bacteria

There is tap water and detoxified dishes and chopsticks. Bacterial DAOs are everywhere. That's what you said.

It's all there. Although.

Bacteria may be temporarily killed at slightly higher temperatures, but bacteria multiply quickly. When it cools down, it will occur in a very short time.

But don't worry, you don't have to have bacteria to be harmful. In order to cause harm to the human body, it needs to reach a certain quantity, and it also needs a special kind. Our body's immune system fights bacteria all day long.

Of course, bacteria should be looked at in two ways, and more exposure to bacteria can enhance people's immunity. In addition, there are bacteria that are beneficial to the human body, which we call beneficial bacteria, and there are a large number of such bacteria living in our body, which produce various benefits to the human body.

Of course, germs are everywhere.

Basic conditions for bacterial growth and reproduction: Sufficient nutrients, energy and suitable environment are necessary conditions for bacterial growth and reproduction.

The basic conditions necessary for the life of bacteria and fungi are: water, nutrients, suitable temperature and a certain living space.

Bacteria and fungi can be found in the soil, in the water, in the air and even on the body, and scientists have also found their traces in the cold polar regions, in very hot springs.

The vast majority of them cannot synthesize organic matter on their own, and can only use a variety of organic matter readily available as nutrition.

It's not good, it's an unsightly place.