What is the concept of life and what is the definition of life?

In the final analysis, life is just a person who creates problems for himself, and then tries his best to solve these problems.

Life is great, you can't imagine how a cell slowly becomes a person, the biggest difference between life and non-life is that life has more souls than non-life, no one can explain how the soul came about, what is produced, so life is great, anyone should cherish it, no matter when you can give up.

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 guided the way people think about 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.

5) Thermodynamic Definition Life is an open system that constantly increases its internal order through the flow of energy and the circulation of matter References.

You came into this world and want to leave your presence in society.