OCEAN 497 Lecture Notes - Lecture 8: Ribose, Autotroph, Hydrothermal Vent
Document Summary
Hydrothermal vent environments serve as a mirror into the microbial life of our earliest past - perhaps at the dawn of life. The evidence point to methane producing archaea as the earliest organism (supports the finding of biogenic methane in >3. 5 ga fluid inclusions) The three domain tree of life is being challenges as more sophisticated molecular and biochemical methods get developed, so far, indicating that the eukaryotic lineage falls within the archaea domain. The transition to eukaryotes involved the engulfing of the mitochondria by a group. Aagard archaea in which the lokiarchaeota are major contributors. Ribozymes and the rna world and models for the origin of the code. The sum of all chemical reactions in a living organism. Argument that you can"t make rna without high energy compounds generally associated with metabolic pathways. The need for high energy p compound like atp to transfer p to rna. Ribose sugar is difficult to synthesize and requires minerals.
