MIC 102 Final Test Questions with Correct Answers

MIC 102 Final Test Questions with Correct Answers How would you describe a bacterium that has many flagella originating at a single pole of the cell? A. axial filament B. lophotrichous c. monotrichous d. pertrichous e. perpendicular filament - Answer-B. lophotrichous Some "microbial" species like Epulopiscium fishelsoni can grow large enough to be seen by the naked eye. What does a cell typically have to do to be able to handle the most critical problem of growing to such a large size? a. creates a series of internal gas vesicles to increase buoyancy b. creates a smooth surface to decrease the cell's surface area c. creates folds in the cell membrane to increase the cell's surface area. d. cover cell in a layer of crystalline layer of protein to provide rigidity. - Answer-c. creates folds in the cell membrane to increase the cell's surface area. Bacterial Topoisomerase can facilitate which of the following activities. - Answerconverting a negatively supercoiled chromosome to the relaxed state converting a positively supercoiled chromosome into the relaxed state DNA synthesis on the lagging strand: - Answer--Requires DNA ligase enzyme activity to complete. -requires multiple instances of primase activity as it progresses If you wanted to track the localization of the FtsZ protein in living cells, which type of microscopy would you use? - Answer-fluorescence Which type of macromolecule makes up most of a cell's mass and requires most of the cell's energy to synthesize? - Answer-Protein Which of the following types of photosynthesis would be considered non-cyclic? - Answer-- the electron donor is H2O -the electron donor is a reduced sulfur compound like H2S Lipopolysaccharide is found: - Answer-in the outer membrane of gram-negative bacteria LUCA probably had all of the following properties except: - Answer-a cell wall containing peptidoglycan In order to assimilate sulfur from the environment into cell material - Answer-sulfur must be reduced prior to assimilation A transport type that phosphorylates the transported substrate as it enters the cell is: - Answer-group translocation The bacterial pilus - Answer--can be used to attach to surfaces -changes length dynamically by polymerization and depolymerization -is assembled primarily out of a single protein monomer