BIOL 1201 : Exam 1 Notes #2
Document Summary
8/25/2011 8:30:00 pm: dna also provides the instructional methods that guide the growth and development of multicellular organism, organisms have the ability to maintain their structure and regulate their internal environment. This ability is called homeostasis (single most contributing factor to your health) Negative feedback and positive feedback are the two common mechanisms used for regulation. The core theme: evolution accounts for the unity and diversity of life. Why arrange it at all: premise: the division of living organisms into the groups makes the study of them easier and more logical, figure 1. 14 will be on test!!!! The three-domain system was conceived about 2 decades ago(see fig. In this system commonalities in the dna organization and other characteristics allows groups, termed domains, to be constructed. There are two prokaryotic domains, bacteria and archaea, and a eukaryotic domain; eukarya. Each of these three domains evolved from a common ancestor.
