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microbio_quiz_3 - _E_gamma radiation B unsaturated...

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1. True or False. The Calvin Cycle and Glycolysis share key intermediates that ultimately could contribute to biosynthesis of peptidoglycan 2. True or false . All amino acides are synthesized from intermediates of the TCA cycle. 3. During the exponential phase of growth, the growth rate is equal to the reciprocal of which parameter? A. Initial number of cells B. Doubling time C. Total biomass D. Final number of cells 4. Match each item on the left with the key enzymes on the right. Each item may be used only once __F__ Hyperthermophiles A. Superoxide reductase __A__O2 toxicity protection B. Sodium motive force __C__Ammonia incorporation C. Glutamine synthetase __E__N2 fixation D. Phosphoribulokinase E. Nitrogenase F.enzymes stabilized with salt bridges. 5. Select the microbial adaptation or survival mechanism that would alolow for ptimal growth or survival in an environment dominated by the environmental factor in the list on the left. Each item may be used only once. __B__ low temperature A. compatible solute synthesis
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Unformatted text preview: __E__gamma radiation B. unsaturated hydrocarbons in membrane fatty acids __A__hypersalinity C. elevated carbon monoxide reductase activity __D__low pH D. active transport of H+ out of the cell E. efficient DNA repair enzymes F. antibiotic resistance 6. The polymerase chain reaction (PCR) is based on the activity of Taw polymerase, a DNA-synthesizing enzyme found in Bacteria isolated from a…. . a. Winogradsky column b. Home compost pile c. Yellow stone thermal spring d. N2- fixing soil sample 7. Beijerinck’s Selective Enrichment Culture technique is based primarily on assumptions about differences in…. a. Microbial biofilm structure b. Microbial microhabitats c. Microbial death rates d. Microbial quorum sensing 8. Dental carries-caused by Streptococcus mutans depend on a biofilm composed of a glycocalyx synthesized by …. a. Pseudomonas aeruginosa b. Superoxide dismutase c. Dextrtansucrase d. Streptococcus sobrinus...
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