Bacteria are very tiny, as bacteria, how do they infect the host?

Bacteria are diverse and can spread through the digestive tract. For example, if you eat food with bacteria, you may get an intestinal infection. Some infections are transmitted through the respiratory tract, and some pneumonia is caused by respiratory infections.

Some bacterial infections are from the blood, such as ** damage, due to contact with bacteria, it is likely to cause blood infection, that is, sepsis, a series of infections, manifested as cold, fever, chills, nausea, vomiting, muscles and joints of the whole body and other poisoning symptoms, if there is a bacterial infection, antibiotics should be given in time.

Bacterial infection refers to tissue damage caused by bacteria that invade the body. It is a process in which bacteria interact with the human body and fight each other. The bacteria that cause the infection can come from outside the host or from inside the host.

When the body's immunity is weakened or the body is damaged, pathogenic bacteria will take advantage of the weakness to enter, causing various opportunistic infections or secondary infections. Various bacteria are pathogenic, such as diphtheria coronary infection can cause diphtheria, Bacillus anthracis can cause anthrax, and Shigella can cause bacterial dysentery.

Whether bacteria can cause disease after entering the human body depends on the ability of bacteria to enter the human body and grow and multiply in the body, the magnitude of bacterial virulence, the number of bacteria, and the variability of bacteria. Bacterial infections often present in an acute and slow-staining pattern. Different infective behaviors of bacteria tend to have different effects on the host.

Under acute infection, bacteria can cause an acute inflammatory response of the host; In the case of slow infection, bacteria tend to form biofilms, have a strong tolerance to antibiotics and the host immune system, and are often difficult to **.

The above is a detailed interpretation of the problem, I hope it will help you, if you have any questions, you can leave me a message in the comment area, you can comment with me, if there is something wrong, you can also interact with me more, if you like the author, you can also follow me, your like is the biggest help to me, thank you.

It can attach to food, through the intestinal respiratory tract for infection, if you do not deal with the injury in time, contact with bacterial infection can also cause infection, and it is very transmissible, can multiply, thus causing some damage to our body.

Because bacteria can be transmitted through the digestive tract, eating food with bacteria can infect the host.

Because bacteria may be transmitted through the digestive tract, eating food with bacteria can infect the host.

Life should have cells, and life in general, even microorganisms such as bacteria and fungi, also have a complete cell structure;

Life usually has the ability to reproduce itself, and life reproduces itself by copying its own DNA, and only through continuous self-reproduction can it continue to reproduce and continue to grow.

The existence of life will have energy consumption, which is determined by the law of conservation of energy, and a certain amount of energy is required for life to survive, develop, and reproduce.

Life can survive independently, usually because life has to survive, this survival should be independent, by absorbing external energy, to maintain the survival of the body, can be called "life".

Through the above four points, we found that the virus does not meet the definition of life, the virus should not be regarded as life, it is a substance composed of a genetic material structure and proteins, it has neither cells, nor can it use the external natural environment to survive independently, in the natural environment, the virus does not have the ability to reproduce itself, and does not consume any energy, which is the main reason why many people think that the virus cannot be regarded as a "living organism".

On the other hand, viruses are not the same as completely inanimate substances, the protein cysts on the virus can bind to the receptors of the host cell, so that the genetic material of the virus is injected into the host cell, and the replication of the viral genetic material is completed through the host cell, and the energy used by the virus is also the energy of the host cell, so as to complete the process of replication and reproduction, the virus can infect the host, and even cause pathological changes in the host, and different viruses have different transmission characteristics. It can be transmitted and replicated in a variety of ways, keeping the virus alive.

Due to the special structure of the virus, in the process of infecting the host and in the process of survival in nature, the virus is still "evolving", the virus is indeed in the process of continuous evolution, in the evolution of the genetic code of the virus will become more stable, the virus in the process of evolution, not more complex, but more simple, and the simpler virus structure, seems to be more conducive to the survival of the virus, and the current large number of virus species on the earth, also proves this.

Viruses do not have the usual characteristics of living organisms, while viruses are able to reproduce and replicate through host cells, and are constantly evolving and developing.

We still don't know enough about the microbial world and viruses, and the occurrence and development of the new coronavirus epidemic is a warning to us human beings. Under the current situation, it is still worth paying attention to the effective prevention and control of this new virus, cutting off the transmission route of the virus, so that the virus that has no "life" in nature has no host to invade, so that the epidemic can be better controlled, and finally usher in the real control and disappearance of the epidemic. Do you think viruses are living organisms?

Because living things don't cause harm to people, while viruses cause harm to people, even though viruses are very small, they can't be counted as living things.

Because they belong only to bacteria, belong to fungi, and do not have cytoplasm and cell walls, they cannot be counted as living organisms.

Because viruses have no life, viruses can be artificially created, and viruses are very bad for the human body.

This may be because viruses do not have the characteristics of living organisms and do not have a cellular composition.

1. Microorganisms are all tiny organisms that are invisible or unclear to the naked eye, with tiny individuals and simple structures, which can only be seen clearly by photohail microscope and electron microscope, collectively referred to as microorganisms. Whereas, bacteria conform to the characteristics of microorganisms.

2. Microorganisms include bacteria, viruses, molds, yeasts, etc. (However, some microorganisms are visible to the naked eye, such as mushrooms, reishi, etc., which belong to fungi.) Viruses are a class of "non-cellular organisms" composed of a few components, such as nucleic acids and proteins, but they must depend on living cells for their survival.

According to the different environments present, it is divided into prokaryotic microorganisms, space microorganisms, fungal microorganisms, yeast microorganisms, marine microorganisms, etc.

Check out more content.

Bacteria belong to microorganisms.

Microorganisms include: bacteria, viruses, fungi and some small protists, microscopic algae, etc., a large group of organisms, which are small and closely related to humans.

Bacteria are microorganisms, and they are the main and important class of microorganisms.

Microorganisms are a general term for all tiny organisms that are difficult to see with the naked eye and can only be observed with the help of an optical microscope or electron microscope. These include bacteria, archaea, actinomycetes, rickettsia, mycoplasma, chlamydia, spirochetes, viruses, fungi, single-celled protists, and some algae.