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Diversity Host Microbe Interactions Immunology Notes

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Louisiana State University
Biological Sciences
BIOL 2051

Diversity1How old is the Earth2What is used to date the Earth to be that old3Evidence for microbial life are found in rocks that date backbillion years ago4What are stromatolitesAt what time during Earths history were all beaches likely covered in stromatolites5What event occurred between 2228 billion years agoWhat effects did it have on the planetWhat kind of microorganisms were involved6How did the banded iron formations form7Was the first cell prokaryotic or eukaryotic8What theory explains the origin of the eukaryotic mitochondria and chloroplast9Forming the primitive mitochondria there was symbiotic uptake of a cell with what type of metabolism 10Forming the primitive chloroplast there was symbiotic uptake of what kind of cell11Provide support for the mitochondria and chloroplasts having bacterial origins12Describe the hydrogen hypothesisaWhat organism was the host bWhich organisms were the symbiontscWhat did each symbiont allow the host to do metabolicallydWhat metabolic terms autotroph heterotrophy phototroph chemoorganotroph chemolithotroph can be used to describe the host and each symbiont13The sequence of what nucleic acid is compared to determine the evolutionary relationship between organisms14Phylogenetic trees represent what type of relationship15Answer the following questions using the phylogenetic tree belowaTo which organism is B most closely relatedbTo which organism is C most closely relatedcWhich organism is the most recent descent from the ancestor at internal node 2 dWhich organism could be the outgroupNode 216Traditionally what phenotypic analyses were done to compare organismsAre these still used today17Use information on GC ratio DNADNA hybridization and 16S18S rRNA sequence to answer the following questionsaWhat are the criteria for determining an organism is a new genusbWhat are the criteria for determining an organism is a new species18What is the GC ratio of an organism19What is the principle behind DNADNA hybridization20How does multilocus sequence typing differ from 16S18S rRNA sequence comparisionWhat is it useful for distinguishing between21What is a biochemical analysis that will allow you to distinguish between two organisms
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