Contact dr eidietis for special accommodation Bio 171 What is life Seperates living from non living A living entity is predominantly carbon and water based o Most of the oxygen and hydrogen in our bodies is in the form of water o o Eating food A living entity is composed of one or more cells A living entity contains heritable genetic information A living entity acquires energy and material form its surroundings A living entity is capable of growth A living entity can responde to environmental stimuli A living entity can reproduce Populations of this entity evolve over many generations through natural selection Living organisms are extremely complicated because they are a product of billions of years of evolution Viruses Viruses have some not all of the characteristics of life Viruses are not alive Not composed of cells Biological systems are inherently complex Biological diversity biodiversity Taxonomy science of naming and classifying the diversity of organisms Developed by Carolus Linnaeus Two part name o Genus name made up of closely related group of species o Second part is species name o Scientific name italicized o Genus name capitalized o Species name not capitalized Three domains of life bacteria archaea eurkaryota Key distinction between prokaryotes and eukaryotes Primary disctinction in difference in complexity Eurkayotic cells have a nuclear envelope has a nucleaus Prokaryote no nucleaus
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