BIOL 1001 Chapter : Chapter 1
Document Summary
The quality that distinguishes a vital functioning being from a dead body. Example, plants grow towards light: external stimuli: temperature, pain, chemicals, etc. Three major categories or domains: bacteria, archaea, eukarya. Within those three domains organisms are further classified as: kingdom, phylum, class, order, family, genus, species. Cell type: prokaryotic, bacteria & archaea, do not have an enclosed nucleus, smaller in size, do not have membrane bound organelles, eukaryotic, eukarya, membrane enclosed nucleus, larger in size, membrane bound organelles. Cell number: unicellular, organisms composed of single cells, all domains, multicellular, organisms composed of many cells, only eukarya. Energy acquisition: autotrophic, self-feeding , photosynthetic organisms, all domains, heterotrophic, other feeding , absorption of individual food molecules, ingestion of food, all domains. Life can be studied at many different levels. Natural causality: everything that you observe has some kind of natural cause. Example, lightening is an electrical discharge from clouds. Uniformity of space & time: something that you see here, happens elsewhere.
