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Hello students, the question is why is life difficult to define? life is difficult to define because it encompasses a wide range of characteristics and processes that are present in the living organism and there is no single definition that can capture all aspects of life as different organisms exhibit different features and functions.
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Also, some non -living systems may exhibit certain characteristics of life which further complicates the definition of life.
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Another question asked is what are the basic chemical differences that distinguish living from non -living system? the basic chemical difference is that distinguish living from non -living organisms is the presence of complex organic molecules such as proteins, nucleic acids, carbohydrates and aphids.
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Further, living organisms possess high degree of organization and compartmentalization with specialized structures which are called as organelles.
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That perform specific function.
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Also, living organisms are capable of metabolism, growth, reproduction and response to stimulus which are not observed in non -living system.
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Another question asked is describe the hierarchical organization of life.
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How does this organization lead to the emergence of new properties of different levels of biological organization? the hierarchical organization of life begins with atoms which combine to form molecules and molecules then form macromolecules such as protein, carbohydrates, lipids, nucleic acids, etc.
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These macromolecules come together to form organelles which are the functional units of the cells.
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The cells in turn are the basic units of life and can combine to form tissue which then combine to form the organ.
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The interactions between components at each level give rise to unique characteristics and functions that are not present in the individual components alone.
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Another question asked is what is the relationship between heredity and variation in reproductive biological systems? heredity refers to the transmission of genetic information from one generation to another generation while the variations or the differences in genetic information between individuals of the same species.
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In reproducing biological systems, heredity ensures that offspring inherit traits from parents while variation allows for the existence of diverse traits within the population and which can be acted upon by natural selection and lead to evolution...