BIOL 4220 Spring 2018 1The American Type Culture Collection (ATCC) is know fo A)
ID: 218149 • Letter: B
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BIOL 4220 Spring 2018 1The American Type Culture Collection (ATCC) is know fo A) freezing human sperm G) lyophilizing bacteria E) all of the above B) plant genotypes D) their identification manual Ancient stromatolites can be found in environments A) that have annual dry and wet seasons that bring abundant fresh water part of the year to 2. this marine environment B) annual dry and wet seasons that allow less predation by wales part of the year Q that long ago were located in protected intertidal areas with dry & wet seasons D) periodic hurricanes that remove all remnants of terrestrial vegetation allowing more sun E) none of the above 3The critical role played by electron carrying co-enzymes for chemoorganotrophic bacteria is emphasized by the variety of differentused by these cells. B) terminal electron acceptors D) proton motive forces A) reduced inorganic compounds Q) substrate-Jevel phosphorylations E) all of the above 4When a microbiologist seeks to cure a bacterial cell they are trying to A) help that cell survive a virus infection B) be sure that that cell will not cause any infections in humans C) make that cell capable of taking up naked dsDNA from their local environment D) remove intercalating agents from their DNA, limiting frame shift mutations E) none of the above 5Anoxygenic photosynthesis by photosynthetic bacteria may be tracked due to the as wastes. accumulation of A) iron oxides C) nitrates E) none of the above B) sulfate salts D) amino acids 6When bacterial cells are assessed for the genetic elements they possess, the following elements are found A) 23 different chromosomes + numerous plasmids B) 3 different chromosomes + numerous plasmids + some viral DNA C) 1 chromosome + mitochondrial DNA + some viral DNA D) 1 chromosome + chloroplast DNA + plasmids E) 1 chromosome + multiple plasmids +possibly some viral DNA 7Chemoorganotrophic bacteria known to use the Enter-Doudoroff pathway to break down glucose differ from other bacteria using the Embden-Meyerhof Parnas (glycolysis) pathway in part due to their (the ED bacteria)-- A) inability to ferment any sugars B) massive production of ATP from this pathway C) production of ATP only using chemiosmosis D) ability to use this (ED) anabolic pathway to quickly make amino acids E) A and C, but not B and D 8.- _ When a F+ bacterial cell undergoes conjugation with an F-cell, about_ -s te maximal number of genes (on average) that can be transferred. A) 5,000 B) 25 D) 50Explanation / Answer
1. C) lyophilizing bacteria
2. C) that long ago were located in protected intertidal areas with dry and wet seasons.
3. C) substrate-level phosphorylations.
4. C) make that cell capable of taking up naked dsDNA from their local environment.
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