Why does life appear in the universe? How did life come about? This is the biggest mystery in the universe. Life is originally an existence that does not exist in the universe, but I don’t know when life forms, including ourselves, appeared. In the continuous evolution, life has become the greatest work of art in the universe and the most profound existence.
The mystery of life
In order to figure out how life came about, scientists used a microscope to observe the predation of microorganisms and single-cell organisms, trying to find evidence of the emergence of life from them.
Single-cell life compared with animals on the African savanna, they have no predation behavior, no brains, and no nerve cells, but they can find partners and perform sexual reproduction. The complex behavior of these single-cell organisms is obviously incredible. Where does their consciousness come from? So far, it is unknown.
Then let's look at another picture and imagine what this is. If you think this is part of a precision machine, you're a big mistake.
This is the flagella of some bacteria, and it is the propeller of bacteria's advancement. Some scientists believe that these flagellas can match the f 1 engine , but the F1 engine is not comparable to the flagella at all.
has only about 20 kinds of flagella, which is composed of protein . Its energy conversion efficiency is close to 100% rotation speed, producing an astonishing 200 turns per second. There are 5,000 types of f-1 engines, which rotate 300 turns per second, and only has 50% energy conversion efficiency. It's like an engine in a bacterial body.
The heart of a person beats 60 to 80 times per minute, more than 100,000 times a day, and more than 2.3 billion times a lifetime. A heartbeat can consume 70g of blood at a time, and about 7,000 liters of blood are circulated a day. If our heart continues to beat, the energy consumed in our lifetime is equivalent to 100 artificial satellites , which is equivalent to the Earth's low-Earth orbit.
In addition to the heart, the immune system of life has been working and has never stopped. All our complex behaviors are based on support from approximately 30 trillion cells. These cells break down into volumes of about 6 clouds every day, while the same number of new cells regenerate.
The lifespan of skin cells is only one month, blood cells have 4 months, and bone cells have about 10 years of lifespan, and they are replaced after their lifespan expires. That is to say, about 98% of cells in our bodies are replaced every year.
The brain cells of our brain are different from other organ cells and will not be replaced. But the atoms and molecules that make up brain cells have been replaced. This is because the brain today is different from the brain before. From the perspective of biology and physics, you are now different from you a year ago.
So the question is, are you the one you used to be? How should this concept be defined? This is the wonder of life.
Are you the same as before?
Most cells in our body have nuclei, and there is genetic information in the nucleus DNA and RNA. Under the control of the nucleus, cells divide and then cycle. Although has a cycle, these "advanced teamwork" that maintains human life activities will not stop.
For example, red blood cells can transport oxygen into the body, white blood cells will remove the substances and foreign objects that invade the body, and stem cells can decompose these toxic components.
In addition to these protagonist cells, there are also some supporting cells that provide services to the protagonist in various ways. How do 30 trillion cells work together?
In fact, cells convey information through a variety of chemicals, they have many different "ways of communication", as simple as flagella mentioned at the beginning, and very efficient. Through these communications, cells can clearly know their respective missions and their roles.
These cells provide us with the highest collaboration ability, but these cells do not have wisdom. How did such a high degree of cooperation be formed? Cells are the basic elements that make up living organisms. Can we figure out this law through single-cell organisms?
These questions are just puzzles at the level of the primary stage of life, and the bigger mysteries are still in our brains.
The mystery of the brain
Our brain has 9 nerve cells that use electrical signals to transmit information. This method of using electricity to transmit information was used hundreds of millions of years before the emergence of human civilization. This is also an example of modern science and technology.
These nerve cells are called synaptic , and this is how our brains connect. When you receive some information, the connection between nerve cells changes, or new connections are created, and the brain remembers the new information received. We can remember about 2.5 million GB of information in our lives. Just like now, your brain is reading this article, converting the content of the article into memory, changing the connection between nerve cells.
Surprisingly, how is the brain formed? How are these cells that assemble the brain constructed? Who gave them the ability to think? The more I think about it, the more incredible it feels. This is still the biggest mystery in life.
In addition to this, life bodies are conscious. When you hear some stories, your consciousness will produce conclusions and thus give you an answer, which means that the brain is just a receiver of consciousness.
American neurologist David Eagman tells us: "A man living in the desert has a radio for the first time in his life. If he presses a button, a different sound will appear, and then he will explore what is in the radio and will take the radio apart and look inside. Then he found the cables inside. Changing the sound of the radio is generated by these cables. But what he really doesn't know is that what manipulates everything is the signal generator , which is far away from the desert."
This is a point of view about the hand of consciousness, and 's research on the nature of consciousness is also amazing. Some research in recent years has shown that we can speculate that we can make decisions freely based on our mood and will, which is free will.
The cells of the single-cell organism mentioned at the beginning are not very different from most of the cells in our bodies. Each of us is part of countless little lives, composed of a large group of cells that are highly coordinated. We all think that we are the masters of our bodies, and perhaps the real masters are those cells.
From simple single-cell organisms to complex organisms, including humans, all living organisms have many mysteries hidden.
Living bodies are tens of thousands of times more complex than all the sophisticated machines made by humans. Life is a miracle in nature. But the more you study life, you will feel less and less understanding.
Author: Xiao Abe Proofreader: Chuanchuan
