In terms of research objects, both biological science and life science are based on the study of life. So, what is life? This problem is directly related to human understanding of themselves, their own definition or interpretation of themselves, that is, it is difficult to achieve a high degree of philosophical generalization, and it is difficult to conform to the logic of science. But according to the conventions of mankind, it is not difficult for the average person to distinguish between what is alive and what is not.
Defining a strict scientific definition of "life" has been a problem for thousands of years, and there is currently no unified, widely accepted definition. However, in order to include the existence of unknown life forms that cannot be excluded, the definition of life must be general enough or even vague enough to include as wide a range of life forms as possible. However, life itself is a process, and the living body is the carrier of this process, which makes the definition of life and living body very difficult. The scientific community generally believes that life should contain the following basic characteristics: having a material basis and a structural basis, having metabolism, having irritability, being able to grow, develop and reproduce, having heredity and variability, being able to adapt to and influence the environment.
Life Science is a science that studies the nature, characteristics, occurrence and development laws of life phenomena, life activities, and the relationship between various organisms and organisms and the environment. It is used to effectively control life activities and actively transform the biological world for the benefit of mankind. Life science has a close relationship with human survival, people's health, economic construction and social development, and is the basic natural science that attracts much attention in the world today. The four frontiers of life science are cell biology, molecular biology, ecology and neurobiology. An organism here is a living being with kinetic energy, and a collection of objects, while an individual organism refers to an organism, as opposed to a non-living thing. Biology refers to all living objects in nature, including plants, animals, microorganisms and multibacterial complexes.
Bioscience is the study of the basic laws of life activities, is one of the basic disciplines of natural science. Its branches include biological taxonomy, physiology, zoology, botany, microbiology, biochemistry, genetics and so on. Biology is the science that studies the structure, function, occurrence and development of living things, as well as the relationship between living things and their surroundings.
Biology has developed in three stages, namely:
Description of the biological stage (before the middle of the 19th century), the main feature is to observe, describe and record all kinds of organisms from the external morphology, to find the similarities and differences between them and the evolutionary context, representative scientists are Darwin, Linnaeus and so on;
Experimental biology stage (19th century to the middle of the 20th century), the main feature is the use of experimental instruments, through the design of experiments, to explore the internal law of biological life activities, the representative figure is Pasteur, with the famous "curved-neck test" proved the "germplasm theory", disputed the "saprophytic theory";
The period of creative biology (after the mid-20th century) was characterized by rapid advances in molecular biology and genetic engineering that allowed people to "create" new species, represented by scientists such as Watson and Crick, who discovered the double helix of DNA.
Biological science is a subject based on experiment, which studies the structure, physiological behavior, biological origin, evolution and genetic development of organisms, and goes through the development period of experimental biological science, molecular biology and systematic biological science.
Biological science and life science belong to the interdisciplinary disciplines, living things are living, and living objects are not necessarily living things. Living objects that are not living things, including cells, tissues, etc., are also within their scope of study. Many people now believe that life science mostly studies the origin of life, especially the phenomenon of human life, while biological science pays more attention to the entire biosphere.
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