Do you know what life is in terms of biology? Definition of the concept of "life"
What is life from the point of view of biology? Sooner or later this question starts to worry every person. To date, there are several interpretations of this concept.
Definition of term
Life is a form of existence of living matter, andalso a set of all the chemical and physical processes that occur in every living cell. Such phenomena contribute to cellular metabolism and reproduction. There is no life beyond the cell boundaries, so viruses show the characteristics of the living only after the transfer of their genetic information into the cell.
Having learned to adapt to the environment,every cell of the living begins to form a variety of living organisms. The most important attribute of all living things on planet Earth is genetic information, which is used for replication.
To denote the concept of "life", you need to list all the qualities that distinguish it from "not life."
What is life from the point of view of biology? To date, there is still no exact concept, but scientists have combined several basic living criteria: metabolism, growth, development, reproduction and response to external stimuli. In other words, life is the state of the body at the moment.
The appearance of life on Earth
What is life from the point of view of biology? To answer this question will help to study its occurrence. Scientists have identified several hypotheses, each of which has not yet been scientifically proven:
- Biochemical evolution.
- The steady state of life.
- Hypothesis of panspermia.
- Spontaneous generation.
The second and fourth statements are simpleare of philosophical and historical interest. After all, scientific research and experiments deny them. Life (definition biology gives in terms of biochemical processes) - an important concept, which is still being studied by scientists.
The hypothesis of biochemical evolution is the only accepted and recognized throughout the world.
Complexity of living systems
The modern definition of life is as follows: "This is a huge system, capable of hierarchical organization, as well as the ability to metabolize, self-renewal." All processes are finely and precisely regulated.
The living systems are characterized by a very high levelfunctional and structural order in time and space. Each living system has the ability to exchange information and energy with its environment. Therefore, systems are characterized by openness. Unlike inanimate structures, they work uninterruptedly "against balance".
Variety of living organisms
Give a definition of life - and you will understand that everythingThe processes surrounding you are logical and interrelated. The organism is the most basic unit of life, because it is in its cells that all life processes take place. Being an individual, the organism is a part of such concepts as populations and species. All the charm of the diversity of living organisms is engaged in biological systematics, which studies the structure of the entire organic world.
All the integrity of living nature is formed in ecosystems, which are an integral part of the biosphere.
Health, birth and age
The definition of the concept of life is only a small part of what you can learn by studying biology.
The process of birth is the birth of a baby person or animal. This concept is very important not only in biology, but also in philosophy and religion.
Health is a holistic state of a living organism, in which it is all in its totality and all its organs individually perform their functions in a coordinated manner.
What is life from the point of view of biology? Life can also be determined by health, because the better the body performs its functions, the better life manifests itself. A large number of sciences are engaged in health issues, each of which has a certain direction.
Age is characterized by life expectancyfrom birth to a certain moment. Most often, this concept refers to the calendar age. But there is also a definition of "biological age".
What is Behavior?
Life (definition of biology is characterized asliving matter) is characterized by behavior, that is, the ability of living organisms to change their actions under the influence of the environment or internal factors. This concept has an adaptive meaning, therefore it helps living beings to avoid negative environmental factors. In higher organisms, behavioral reactions are controlled by the nervous system.
Give a definition of the life of bacteria and plants - andyou will be convinced that they have the ability to move under the influence of external factors. But since such movements are only a physiological factor, it makes no sense to talk about the presence of the psyche and the behavior of them. Plant movements are a pre-psychic level of reflection.
Alive organisms
The modern definition of life can not do without the concept of a living organism.
The body is living matter, which has a system of properties that distinguish it from inanimate objects. Each individual individual is a structural unit of the population-specific level.
Living organisms are the most important subjects in the study of biology. For the convenience of studying, all living bodies were categorized and created biological classifications.
The simplest division is nuclear and non-nuclear organisms. And only then many-and single-celled.
The way of life of a person
Give a definition of a person's life in order to understand all its subtleties. This concept is characterized by the way of life and style.
Lifestyle is the main factor on which human health depends. This includes social and cultural activities, work, habits, training and other manifestations.
The definition of "human life" is based on four main categories: social, economic, psychological and socio-economic.
The way of life is determined by several concepts: the style of life at the production level, socio-economic relations and views of the world around them.
Lifestyle is shaped by the forms of being: learning and hobbies, character and behavior, work and preferences.
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