BIOL 1202 : BIOL 1202 Exam 2
Document Summary
Boundaries between units in the geologic time scale are marked by dramatic biotic change. 5 kingdom classification system in use through the late 1900s: monera, protista, plantae, fungi, animalia now 3 domain system (worse, bacteria, archaea, eukarya, several kingdoms in each domain. Taxon- the named taxonomic units at any level in the taxonomic hierarchy. Linnaeus convinced us to use a hierarchical classification system. Darwin provided us with the mechanism by which evolution results in descent with modifictaion. Microbe: too small to be seen clearly without a microscope, prokaryotes range in size 0. 2-1. 0 micrometer, unicellular eukaryotes range in size 10-100 micrometers. How big is a micrometer: 1/1,000,000 of a meter, the period at end of a sentence is about 1000 micrometers. Other biological entities: even smaller than bacteria, not organisms because they don"t have all of the characteristics of living organisms, viruses, small (. 05-. 2 micrometers) and come in many different shapes, 3 common parts, genome- genetic information.
