BIOL 101 Chapter Notes - Chapter 1: Eukaryote, Archaea, Gene Expression
25 Sep 2016
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Adaptations are a result of evolution: evolution is the process of change that transforms life on earth, a single individual cannot evolve. We recognize life by what living things do: properties/processes associated with life: Its core theme is evolution: unifying themes of biology: Reductionism- reduces complex systems to simpler components that are easier to study: emergent properties- due to arrangement and interactions of parts as complexity increases, reductionist approach lacks certain properties, systems biology- analyzing interactions amongst a system"s parts. Cell- basic unit of structure and function: smallest unit of organization, prokaryotic vs. eukaryotic. Prokaryotic- single celled, microorganisms; lack nucleus and membrane enclosed organelles. Eukaryotic-plants/animals; has nucleus and membrane enclosed organelles: chromosomes contain dna (genetic material) Dna is arranged in a double helix: gene expression- info in a gene directs manufacture of a cellular product, genome- library of genetic information. Three domains of life: bacteria, archaea, eukarya.
