MB C12 Quiz

lrickson's version from 2016-11-21 18:30

MB Quiz 16

MLab quiz 12


Question Answer
1. Sterilization is thekilling or removal of all microorganisms in a material or object
2. Disinfection is thereduction of the number of pathogenic microorganisms to pose no threat of disease
3. A viricide is an agent thatinactivate viruses
4. An agent capable of killing microbes rapidly perhaps killing certain microorganisms but only inhibiting the growth of others is calledgermicide
5. All of the following apply to the control of microbial growth exceptheat is not considered an antimicrobial agent
6. The use of phenol as a standard with which to compare the effectiveness of other chemical disinfectants is referred to as thephenol coefficient
7. All of the following qualities apply to the selection of an ideal disinfectant exceptexpensive and difficult to obtain and use
8. Whan an antimicrobial agent permanently denatures proteins thus preventing renaturation to their native states it is consideredbactericidal
9. Chemical agents that denature proteins include all of the following excepthalogens
10. Which of the following do not affect viruseshalogens
11. What is a cationic detergent having four organic groups attached to a nitrogen atom and used to sanitize utensilsquaternary ammonium compound
12. Alcoholsdissolve lipids and denature proteins
13. Which of the following are not examples of alkylating agents that disrupt proteins and nucleic acidsmethylene oxide
14. Formaldehyde as an antimicrobial agent is used for the following purposesinactivate viruses without destroying antigenic properties
15. Denaturation of proteins by antimicrobial agentsdisrupts hydrogen and disulfide bonds
16. Which of the following chemical antimicrobial agents is matched correctly with its mechanismphenols disrupt cell membranes
17. Dry heat does most of its damage against microorganisms byoxidizing molecules
18. Which is not used when trying to ensure that autoclaving has achieved sterilitypasteurization by heating to 62.9 °C for 30 minutes
19. Which of the following involves sterilization by heating steam in a jacket and subsequent entrance of the steam into a sterilization chamber, where materials and substances to be sterilized are placedautoclave
20. Which does not pertain to pasteurizationachieves sterility
21. Microwave radiationwhen tuned to energy levels of water releases the energy as heat
22. High concentrations of solutes such as sugar or salt results in plasmolysis of cells due to the onset of which phenomenonhigh osmotic pressure