MCB 2289LMicrobiology LearnSMart Lab Module 02 Quiz

Microbiology LearnSmart Lab Module 05 Quiz Question 1 1 out of 1 points A hypotonic solution is one with a solute concentration greater than that of a cell. Selected Answer: Fals e Question 2 1 out of 1 points Human skin provides an environment with NaCl levels slightly above that of most bacterial cells. Which organism would most likely be found on the skin? Selected Answer: A halotolerant organism Question 3 1 out of 1 points All of these terms categorize microorganisms based on their temperature preference EXCEPT which? Selected Answer: Microaerop hile Question 4 1 out of 1 points All microorganisms use oxygen in their metabolism Selected Answer: Fals e Question 5 1 out of 1 points An organism that has an optimal pH for growth below 5.5 is considered an acidophile Selected Answer: Tru e Question 6 1 out of 1 points Atmospheric gases, nutrients, pH, energy sources and radiation are all examples of ______ factors that affect microbial growth Selected Answer: environme ntal This study source was downloaded by from CourseH on :49:20 GMT -05:00 This study resource was shared via CourseHQuestion 7 1 out of 1 points The slowed growth or lack of growth of an organism at temperatures of pH outside of its ideal range is most likely due to changes in its ________? Selected Answer: Enzym es Question 8 1 out of 1 points The ideal environment for microbial growth would be: Selected Answer: Warm, isotonic, neutral pH Question 9 1 out of 1 points Which of the following would be used to provide the optimum growth temperature for microorganisms that typically grow in humans? Selected Answer: 37 degree C incubator Question 10 1 out of 1 points An organism that is unable to grow in the presence of atmospheric levels of gaseous oxygen, but needs a small amount of oxygen for its metabolism is called a __________________? Selected Answer: Microaerop hile Question 11 1 out of 1 points Most human pathogens are classifed as thermophiles. Selected Answer: Fals e Question 12 1 out of 1 points A solution with a pH of 7 is acidic. Selected Answer: Fals e Question 13 This study source was downloaded by from CourseH on :49:20 GMT -05:00 This study resource was shared via CourseH1 out of 1 points A hypertonic solution is prepared by the addition of sucrose. Which of the following would happen to bacteria placed in this solution: Selected Answer: The bacterial cells will undergo plasmolysis Question 14 1 out of 1 points All of the following organisms are expected to grow within an anaerobe jar EXCEPT Selected Answer: Obligate aerobe Question 15 1 out of 1 points A microorganism will grow across the range of pH that allows for normal enzymatic function Selected Answer: Tru e Question 16 1 out of 1 points Where would you expect an obligate anaerobe to grow in a nutrient broth tube? Selected Answer: Lower part of the tube Question 17 1 out of 1 points The term aerobic, anaerobic, and microaerophilic are used to categorize microorganisms based on their ______ requirements. Selected Answer: oxyg en Question 18 1 out of 1 points All of the following are environmental factors that affect microbial growth EXCEPT Selected Answer: cell wall type Question 19 This study source was downloaded by from CourseH on :49:20 GMT -05:00 This study resource was shared via CourseH1 out of 1 points The changes or breakdown of three dimensional proteins that may result from a pH outside of an organism's growth range is referred to as ______________ Selected Answer: Denaturat ion Question 20 1 out of 1 points Distilled water would be _______ to bacterial cells: Selected Answer: Hypoton ic This study source was downloaded by from CourseH on :49:20 GMT -05:00 This study resource was shared via CourseH Powered by TCPDF ()