Each individual is composed of one or more minimal living units, called cells, and is capable of transformation of compounds, growth, and participation in reproductive acts. The meaning of life is the quality that distinguishes a vital and functional being from a dead body How to use life in a sentence. A difficult term to define, life can be considered the characteristic state of living organisms and individual cells, or that quality or property that distinguishes living organisms from dead organisms and inanimate objects Although universal consensus on a definition is lacking, biological properties common to the known organisms found on earth (plants, animals, fungi, protists, archaea, and. The period between birth and death, or the experience or state of being alive
Biology is the science that studies life This may sound like a silly question with an obvious answer, but it is not easy to define life For example, a branch of biology called virology studies viruses, which exhibit some of the characteristics of living entities but lack others Although viruses can attack living organisms, cause diseases, and even reproduce, they do. Open a textbook in biology and you’ll find a purported definition of life, usually in the form of a list of characteristics that apply to organisms, their parts, their interactions, or their history Often these definitions will be nothing more than descriptions or rely on more controversial theoretical commitments
See examples of life used in a sentence. Plants, animals, insects, bacteria, viruses, algae, mold and humans all have life They grow, eat, make waste, change, and reproduce Rocks and minerals, not doing. The existence of diverse definitions of life, as detailed in the previous section, surely means that life is complex and difficult to briefly define A scientific understanding of living systems has existed since the second half of the 19th century
But the diversity of definitions and lack of consensus among professionals suggest something else as well. The evidence is overwhelming that all life on earth has evolved from common ancestors in an unbroken chain since its origin Darwin’s principle of evolution is summarized by the following facts All life tends to increase More organisms are conceived, born, hatched, germinated from seed, sprouted from spores, or produced by cell division (or other means.
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