-
Coat: Spore shell, tough and dense texture, composed of keratinlike protein, containing a large number of disulfide bonds, most bacteria produce ** from contact.
-
Organisms on the earth are divided into eukaryotes and prokaryotes, humans are eukaryotes, bacteria are prokaryotes, hundreds of millions of years ago, life on the earth just appeared is prokaryotes, which are synthesized by carbon, hydrogen, oxygen and other elements, if you have time to read high school biology books, if you want to know more in detail, you can take a look at the college textbook "Microbiology".
-
Touching handshakes all come with germs. Satisfied.
-
Soon after the birth of the earth, bacteria are also a kind of small animals that crawl out of the water, after hundreds of millions of years of evolution, they mutated into a variety of different kinds of bacteria, relatively small, invisible to human eyes, so they are also called microorganisms, in order to make them live on their own, they decompose all kinds of dead animals and plants, to obtain energy to keep themselves alive, so bacteria are the greatest sanitation workers on the earth. Everyone should be kind to them.
-
Refers to one of the major groups of organisms and belongs to the bacterial domain. It is also the most abundant group of all organisms, with an estimated total of about 5,10,30 individuals. The shapes of bacteria are quite varied, mainly globular, rod-shaped, and spiral-shaped. [1]
Bacteria also have a great influence on human activities. On the one hand, bacteria are the causative agents of many diseases, which can be transmitted between normal human bodies through various ways, such as contact, digestive tract, respiratory tract, insect bites, etc., which are highly infectious and extremely harmful to society. [2] On the other hand, bacteria are also commonly used by humans, such as the production of cheese, yogurt and wine, the manufacture of some antibiotics, and the treatment of wastewater.
In the field of biotechnology, bacteria are also widely used. [
-
Bacteria are single-celled microorganisms of the family of Euphoria, with a prokaryotic cell structure, which is usually classified in taxonomy as the kingdom of bacteria in the kingdom of unicellular organisms. They are usually in the micron range in size and come in a variety of shapes, which can be spherical, rod-shaped, spiral-shaped, and so on. Bacteria are widely found in nature, including soil, water, air, food, and human bodies and other environments, some bacteria are beneficial to the human body, and some can cause human infections and diseases.
At the same time, bacteria also play an important role in many industrial and biological science and technology fields, such as food fermentation, biopharmaceutical manufacturing, etc.
Some drugs may slowly become ineffective because bacteria develop resistance. >>>More
When was the primordial earth born? According to the widely circulated scientific opinion, the primordial Earth was born about 50 million years after the formation of the solar system. But a new view put forward by Jacobson, a scholar at Harvard University in the United States, is that the primitive earth was formed much earlier than that. >>>More
Peking Opera: Also known as "Peking Opera". It is one of the traditional Chinese operas. >>>More
The universe is created due to the big **, the origin of the universe is an extremely complex issue, the universe is the material world, it is in constant motion and development. For thousands of years, scientists have been searching for when and how the universe came to be. To this day, many scientists believe that the universe was formed by a big ** that occurred about 13.7 billion years ago. >>>More
The current theory is that the universe is born from a large **, and the universe is formed from a single point**, and all our known physical laws including time and space are formed at this point, and what is outside the point is meaningless in physics, and it is impossible to give an answer.