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21 Cards in this Set
- Front
- Back
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What two elements were produced in the big bang?
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H and He
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Where are the elements that are lighter than Iron (Fe) produced?
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Fusion reactions in massive stars
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Where are elements that are heavier than Iron (Fe) produced?
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Catastrophic death of massive stars
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When did the earth form?
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4.6 BYA
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What are the oldest living fossils? How old are they?
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Stromalites, related to cyanobacteria and they are 3.5 Billion years old
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Describe the conditions in which the earliest life forms evolved.
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Hot and anoxic conditions (3.8 BYA) liquid H2O was available.
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What is a probiont?
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a term given to describe a pre-cell
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What does a probiont contain?
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RNA/Liposome
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What four elements did the Miller Experiment use?
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H2, H20, CH4, and NH4
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Describe the miller experiment.
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He took those for chemicals and added a bunch of heat and electricity and they rapidly generated AA's.
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What catalyzes the formation and growth of lipid vesciles that have been shown to contain RNA?
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Iron sulfide or Clay
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What are the catalytic activities of RNA?
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Nucleotide Synthesis, Self-Replication, and Polypeptide Polymerization
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When did unicellular eukaryotes arise?
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1.5-2 BYA
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Where could the nuclear material of the eukaryotes came from?
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preArchaea/Bacteria nuclear fusion or endosymbiosis
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Where did mitochondrion evolve from?
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Alpha Proteobacteria, related to present day Ricketssia (endosymbiosis)
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Where did chloroplasts evolve from?
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Cyanobacteria related to Prochlorococcus (endosymbiosis)
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What is genomic fingerprinting?
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Using Restriction Enzymes and Gel Electrophoresis to classify genomic characteristics without sequencing whole genomes.
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What is at the root of a phylogenetic tree?
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Probionts
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What does the distance between two organisms represent on a phylogenetic tree?
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the degree of homology of the SSU gene sequence
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What is the suffix of the names of orders?
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ales
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What is the suffix of the names of families?
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aceae
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