Microbiology Final Exam Questions with 100% Correct Answers | Verified | Updated

Microbiology Final Exam Questions with 100% Correct Answers | Verified | Updated Although Staphylococcus aureus demonstrates optimal growth in an environment of 1% salt, it is able to tolerate up to 13% salt. S. aureus would be described as: - answerhalotolerant You have inoculated a bacterial isolate onto a variety of media with NaCl concentrations raging from 1% to 25%. On which of these media are the bacteria most likely to undergo osmotic lysis? - answerBacteria are not likely to undergo osmotic lysis on any of these media since bacterial cell walls protect them from osmotic lysis and because none of these media are hypotonic relative to the bacterial cells. Isotonic: an experiment involves the inoculation of bacteria onto a variety of media with NaCl concentrations ranging from 1% to 25%. Which of these media is most likely to be isotonic with the bacterial cells? - answer1% NaCl. An experiment involves inoculating a variety of media with a NaCl concentration ranging from 1% to 15%. Which of these media would have the lowest water concentration? - answer25%. The water concentration decreases with increasing solute concentrations. As the concentration of solutes increases, the water concentration ________. - answerDecreases Which of the following solutions would be most likely to have the highest water concentration? - answerHypotonic solution Microorganisms that grow at salt concentrations as high as 15-30% are known as: - answerHalophiles Why can jams and honey be stored at room temperature for lonf periods of time? - answerthe high sugar content causes plasmolysis of bacterial cells. the higher the pH, more ____ the enviroment. - answerAlkaline Acetobacter aceti is a bacterial species involved in the production of acetic acid during vinegar production. Which category would this bacteria be classified within? - answerAcidophile. How is an antiseptic different from a disinfectant? - answerAn antiseptic is used to remove or kill microorganisms on tissue, whereas a disinfectant is used to remove or kill microorganisms on inanimate subjects