Biology 1001A Lecture Notes - Lecture 3: Homochirality, Ribosomal Rna, Uracil
24 Apr 2016
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Characteristics of life: order, harness and utilize energy, reproduce, respond to stimuli, exhibit homeostasis, growth and development, evolve. Last universal common ancestor (luca) everything on the planet that"s alive today is derived from the luca: luca was not the first form of life!!! Everything else died out, so luca was the last organism continued to thrive and evolve. All living organisms share the following characteristics: genetic system based on dna, atp, carbon, cells are made of lipids, dna to rna to protein transfer of information, glucose and glycolysis, common system of protein assembly. Since they all share these characteristics, we can assume that all organisms share a common ancestor with these features. Through one gene"s sequence: 1500 bases long* We don"t use the term prokaryote because that might suggest that bacteria/archaea are more evolutionarily advanced* Also, -karyote means nucleus pro- suggests before nucleus we have no evidence that.
