notes in biology

May 20th, 2015
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Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth,evolution, distribution, and taxonomy.[1] Modern biology is a vast and eclectic field, composed of many branches and subdisciplines. However, despite the broad scope of

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Biologyis anatural scienceconcerned with the study oflifeand livingorganisms, including their structure, function, growth,evolution, distribution, andtaxonomy.[1]Modern biology is a vast and eclectic field, composed of manybranches and subdisciplines. However, despite the broad scope of biology, there are certain general and unifying concepts within it that govern all study and research, consolidating it into single, coherent fields. In general, biology recognizes thecellas the basic unit of life,genesas the basic unit ofheredity, andevolutionas the engine that propels the synthesis and creation of newspecies. It is also understood today that all organisms survive by consuming and transformingenergyand byregulatingtheir internal environment to maintain a stable and vital condition.Subdisciplines of biology are defined by the scale at which organisms are studied, the kinds of organisms studied, and the methods used to study them:biochemistryexamines the rudimentary chemistry of life;molecular biologystudies the complex interactions among biologicalmolecules;botanystudies the biology of plants;cellular biologyexamines the basic building-block of all life, thecell;physiologyexamines the physical and chemical functions oftissues,organs, andorgan systemsof an organism;evolutionary biologyexamines the processes that produced the diversity of life; andecologyexamines how organisms interact in theiren

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