12 When comparing the genomes (e g, the sizes of bacterial chromosomes in number

Question

12 When comparing the genomes (e g, the sizes of bacterial chromosomes in numbers of DNA b bacteria (eg Chlamydia sp)hvegenomes, while soil bacteria (e-g.Bradyrhizobium sp) havegmes A) intermediate (2 to 5 million bps)small (1 to 2 million bps) B)large (5 to 6 million bps) intermediate (2 to 5 million bps) C) the largest (nearly 10 million bps).the smallest (0.5 milhon bps) D) the smallest (05 million bp) the largest Gust over 9 million bps) E) the smallest (0.5 million bps) intermediate (2 to 5 million bps) parasitic 13Ancient stromatolites have been used to provide data that helps usand also provides some information segarding A) determine where ancient beaches were located.... the types of dinosaurs that would be expected there B) study fossilized prokaryotic cells ancient environmental conditions at the time the stromatoläte existed Q) support Panspermia exactly where the comet hit the ancient Earth D) understand chemical evolution .. why type cultures are important to eukaryotic cells E understand the role eukaryotic cells played 3.6 bilion years ago.... when the first bacteñia emerged from eukaryotes 14Use of the new (and currently developing) genomics technolog can provide data that obervesand can be used to soet those genes into A) the genetic code of bacteria.... amilies B) all the genes present in a bacterial C) data from ancient bacteria .....modem bacterial type strains D) phenotypic traits genotypes that can be more easily compared E) chromosomal DNA genes that are similar to others in cukaryotic cells pure ctrure... functional groups based on key cellular functions 15 Carl Linnaeus was an early taxonomist that came up with the idea to use to actually name plants and animals. A) Domain, Phylum, Class, Varicty Q) Genus and Species E) B and D, but not A and C B) Kingdom, Genomic Code, Family D) Family and Genus Qwestions 16 &17, 10 pts ed) 16. If you were working in a microbiology lab in the 1950s with a bacterial culture that you know possessed at least one plasmid, how would you determine just what genetic traits that plasmid might have given this bacterial culture? Please describe the lab procedure you would use to do this 17 The evolution of the first anoxygenic photosyathetic develolp/obtain a light reactive chemical somewhat like modern chlorophyll. 1) Please discuss a possible mechanism that could resulted in the generation of the first light-reactive chemicals that could have been used by these early photsynthetic prokaryote Also discuss what the likely scatological signal that could be observed in ancient stromatolites (today) might be that wouald prow bacteria would have required that some form of early prokaryotic cell cells. evidence for the early evolution of these first

Explanation / Answer

12. When comparing the genomes(i.e sizes of bacteria chromosomes in number of DNA base pairs),parasitic bacteria have the smallest genome(0.5 million bps) because genes for many metabolic pathways have been reduced as they mostly depends on hosts. While soil bacteria(e.g Bradyrhizobium sp.) have the largest genome(just over 9 million bps) as they have to perform so many activities like N2 fixation,symbiosis etc.

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