What is life What is the definition of life? 5

Life is what you live for. Living in this world is to breathe the air and feel the outside world.

1. Engels scientifically defined life for the first time In the second half of the 19th century, Engels gave a definition of life: "Life is the mode of existence of the proteosome, and the basic factor of this mode of existence lies in the continuous metabolism of the external nature around it, and as soon as this metabolism stops, life will stop with it, and the result is the decomposition of proteins." "Engels' definition of life reveals to a certain extent the material basis of life, that is, the proteosome with metabolic functions.

For 100 years, this definition has been a guide to the idea of life.

2. Mankind's New Understanding of Life Since the 20th century, natural science has developed rapidly, and the relevant sciences that study life have successively entered the molecular level. Modern science has proved that after removing water from living cells, about 90% are proteins, nucleic acids, sugars, and lipids, among which proteins and nucleic acids are the most important. Biological proteins are composed of 20 heavy amino acids, which play an important role in the catalysis of nucleic acid metabolism, the regulation and control of metabolism, and the memory and recognition functions of higher animals.

Nucleic acids are composed of bases, pentose, phosphoric acid. Depending on the pentose sugar contained in the nucleic acid, the nucleic acid can be divided into ribonucleic acid (RNA) and deoxyribonucleic acid (DNA).Nucleic acids control the synthesis of proteins and determine the properties of proteins.

It can be said that proteins and nucleic acids are interdependent and interact with each other, making the living body a unity.

3. Different definitions of life It should be said that life is a phenomenon that is difficult to define, and each professional research tends to define it in its own terms:

1) Physiological definition For example, life is defined as a system with functions such as eating, metabolism, excretion, respiration, movement, growth, reproduction, and reactivity. But some bacteria don't breathe.

2) Definition of metabolism Living systems have interfaces and often exchange substances with the outside world without changing their own properties.

3) Biochemical Definition Living systems contain nucleic acids that store genetic information and enzyme proteins that regulate metabolism. However, a virus-like organism is known to have no nucleic acids.

4) Genetics defines a system that evolves through gene duplication, mutation, and natural selection.

Life is a process of interaction between heaven and earth. Heaven and earth interact, one yin and one yang; Back and forth. The yang is moving, so the loss is the living, and the loss is not lost, that is, death.

The yin is quiet, so it is to gain for a living, and to get nothing is to die. Therefore, the ancients said that the yang is easy to live, and the yin is easy to kill.

The physiological processes presented by organisms that are made up of substances such as nucleic acids and proteins. Metabolism and self-replication are the most basic phenomena of life. With the evolution of organisms, life phenomena have become more and more complex, mainly including stress, development, heredity, variation, movement, regulation, etc.

Citations and explanations: 1. The fate of Judah.

The Strange Status Quo Witnessed in Twenty Years" Chapter 80: "Why bother looking for what life is destined to do." ”

2. Stay alive. 3. Refers to living things. Refers specifically to animals.

Liu Dabai's poem "Red New Year": "Who feeds the life in the world? ”

4. Refers to life.

Lao She's "Two Horses" third paragraph 15: "Completely positive, at least it makes the country shake its spirit, and makes life a little more fun." ”

synonyms: life.

Meaning: human and animal life.

Pinyin: [ xìng mìng ].

Citations and explanations: 1. Ancient Chinese philosophical categories. It refers to the gifts and endowments of all things.

2. Life. Cao Yu "Thunderstorm" Act II: "Su Yi: Since I gave my life and reputation to you, I have not cared about anything. ”

Example: Each entry in the calendar records the beginning or end of life; Every second of time is chewing on victory or defeat.

Human life refers to the conscious existence, life has feelings, the origin of life is great and spiritual, and it has an important role for human beings. As a human being, we must not only have faith, spirit, and will, but more importantly, we must have respect and affection for life, identify with life, and make it brilliant. People can identify with life, treat others with love, and will not have a criminal mentality towards society.

Therefore, identifying with life and loving it is an extremely important expression of self-love.

Is life fundamentally different from death? Or is life and death the same? The physicist Erwin Schr Dinger defines life in such a way that something that has life avoids metamorphosis into something that is inanimate, following the fate of a fundamental change in entropy and reaching equilibrium.

In my definition of life, there are three necessary conditions for the existence of life:

1) Life must be such.

The existence of an orderly and relatively stable structure, the existence of life is based on the existence of matter.

2) Life is a structure composed of energy and matter, and I call this structure the ordered structure of living things.

3) Living organisms can preserve this relatively orderly and stable structure for a long time, and I call this characteristic of living things the continuity of living things.

So, the definition of life is:

Life is an ordered structure with continuity.

This is a very difficult question to answer, especially when it comes to the origin of life. Even the definition given by the world's top biologists is probably difficult to get accepted by philosophers. However, all life on Earth has one thing in common:

1.Organisms: Life on Earth is all organisms, there are no exceptions to this, at least for now it can be said (it seems nonsense, but this condition is essential);

2.Substance metabolism: By ingesting substances from the outside world and carrying out a series of biochemical reactions in the body, they excrete substances that are useless to themselves, and preserve useful substances for storage and use. It is also an important carrier of energy metabolism;

3.Energy metabolism: The energy required for the growth activities of each organism comes from the outside world, and the energy is finally converted into heat energy through the way of activity.

4.Communication: The ability of living organisms to process and send messages is an important factor that distinguishes life from non-living matter. Matter in the inorganic world does not have such capabilities (at least not yet).

5.Periodicity of survival: any life, regardless of its growth process, will go from formation to death in a relatively stable time frame (note: reproduction is an important link, but it is not necessary);

6.Territoriality of habitats: It is rare to see any literature that defines habitat when it comes to life. But it is an indisputable fact that all life has the limitations of its living space, and no one can survive under any conditions.

To sum up, life can be defined as an organism (combination) that exists in a certain time and space and is capable of metabolizing matter and energy and transmitting information.

Finally, it is important to note that while water and air are essential to the lives we come into contact with on a daily basis, they are not necessary for individual living beings.

Life is the embodiment of the value of survival. Life is not about time, nor is it about wealth. It's what a life has left behind in the long universe.

Idle life is too long, and it will not last forever. It will also disappear in the long river of time. Some lives, even if they are short-lived, will be forever recorded in history.

Life is not just about living, a meaningful life is a living person. A meaningless life is a walking dead. A living person is a living person, and a lifeless person living is a living dead.

Life starts with a finger. You can live for up to 36 days. Which locket is your final home?

Life is a butterfly, and others may not know what pain you are suffering and how much it is, only your current glory. It's enough to know for yourself.

Life is a priceless treasure, you can't live without life, people live in the world to live worthwhile, to live meaningful, meaningless life, is the walking dead.

Life is the life of a meaningful person, which is divided into organic life and inorganic life.

Check it out and maybe find out.

Life is precious, and love is even more valuable!

To live is to live to suffer!! Live and enjoy!! Live to experience!! Learn alive!!

Life is water, and it is constantly flowing.

Life, to put it bluntly, is to live for a life.

Life is a gemstone given by nature to man.

There is a semi-closed system that can be passed down from generation to generation and communicate with the outside world.

It can be metabolized and can replicate itself.

In addition, the life of celestial bodies should be considered anthropomorphic

Everything that is metabolized is alive.

From existence to disappearance.

It's not something we have in our hands, and it's not something we can control.

So for us.

It's not interesting...

To borrow a phrase from a great man: life is an illusion.

It seems that the basic life has a metabolism, and if you don't have it, you die.

People live for your parents, because they left you, they want you to live, and you have to live well for them.

Survived. Happy. Sad. Success. Failing. Died. It's a hundred.

Born. Assimilation. Dissimilation. Reproduction. Death.

The definition we usually give to life is:

1) It is possible to transform substances in nature into their own substances through a series of chemical reactions.

2) It will continue to grow.

3) When you reach a certain stage, you can breed objects similar to yourself.

For the points you mentioned, the 10,000-year-old frozen lotus seeds still have breathing and metabolism, but the speed is extremely slow. Viruses are single-life and do not have these organs, but still have material exchanges with the outside world.

Mules and eunuchs are a special case and are considered to be disrupting their ability to reproduce.

The few self-replications you cite are purely physical and lack the chemical changes needed to change matter.

As a person who has the best thing in the world, I have desecrated her sacredness and ordinariness countless times Every life has its own meaning of existence, I don't know why you are here to ask such a question, I don't have the slightest contempt for you, I just feel a little surprised When I was very young, because of my youth and ignorance, I was full of curiosity about the mystery of life, and because of this I had a lot of fear and anxiety But as I grew up little by little, I had a deeper understanding of lifeI know it's not the simple term that used to come to my mind, but like my mother, she will always give me more than I give back to her

There is a lot of beauty in life, but I used to be an extremely pessimist, I felt that there was only pain and trouble in life, and happiness was like the stars in the sky, it was always an impossible dream But when I came out of the hell that bound me, I found that my previous thoughts were so naïve and simple I gradually understood that happiness is the nature of life, and all the factors that make me feel unhappy are indifferent Just like the Internet is illusory, but it leaves an indelible mark on people Life is like that sometimes, when you're in it, you don't really understand your situation, and some illusions make you misunderstand life, and you have a lot of distractions, and you get unhappy, and you fall into it, and you even give up on your own life

Life has been in a hurry for decades, and I ask what is life in the world? Thousands of miles of rivers and mountains, thousands of miles of red dust, mirrors and flowers, water and moon, white clouds are ethereal, and in the end, empty and empty, the only life is full and happy

Everyone has their own shortcomings, and everyone knows that it is really not that simple to want to make yourself into the world and follow the dust The cultivation of one's own quality is not something that ordinary people can complete in decades Cherishing life in my opinion does not mean that you have to find the elixir of life and make yourself live a long life Cherishing life is to live a good life in your lifetime, tolerate others, understand others, forget unhappiness, spread happiness to the people around you, and love the world with your own heart

Although there is inevitably a feeling of the cold state of the world, and the bitter thoughts of interpersonal changes, but you can't forget the beauty of the whole spring because of the withering of a flower, as long as you observe the world around you with your heart, you will find that there are really a lot of things worth doing and will make your life more exciting

A way to relax yourself, but let your heart be comforted and soothed Looking for your own island in the ocean of books can make us stable and self-contained Cleanse your heart with ** Whether it's in tune or out of tune As long as you're happy As long as you think of the past that makes the corners of your mouth curl up, instead of "do unto others as you would like to do unto you", you will cherish life with your heart

The meaning of life is to let a person who does not know himself understand that his existence is meaningful, that his life is the most precious, and that he should use his life to love his loved relatives, friends, enemies, and the world that once confused, made him helpless, and made him happy