Microbiology with Diseases by Body System (5th Edition)
5th Edition
ISBN: 9780134477206
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Chapter 9, Problem 2TMW
Why are BSL-4 suits pressurized? Why not just wear tough regular suits?
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What are some of the potential risks or drawbacks associated with gas or radiation sterilization, and how are they addressed to ensure that the process is safe and effective?"
Which statement among A-D is false regarding physical and chemical agents of control?
A) O Effective killing of bacteria via irradiation with UV light would likely take longer than if irradiated with gamma rays or x-rays.
B) O Detergent-type disinfectants exert their effect by solubilizing membranes.
C) O Antiseptics are generally not as strongly concentrated as disinfectants
D) O Sterilization and pasteurization are equivalent processes.
In which type of chromatography lipids are carried up a silica gel coated pate by a rising solvent front, less polar travels farther than the more polar ones?a) Absorption chromatographyb) Thin layer chromatographyc) Gas-liquid chromatographyd) HPLC
Chapter 9 Solutions
Microbiology with Diseases by Body System (5th Edition)
Ch. 9 - Why does milk eventually go bad despite being...Ch. 9 - Prob. 1EDCSCh. 9 - Why are BSL-4 suits pressurized? Why not just wear...Ch. 9 - Prob. 3TMWCh. 9 - Prob. 4TMWCh. 9 - Prob. 1MCCh. 9 - Prob. 2MCCh. 9 - Prob. 3MCCh. 9 - Prob. 4MCCh. 9 - Prob. 5MC
Ch. 9 - Prob. 6MCCh. 9 - Prob. 7MCCh. 9 - Prob. 8MCCh. 9 - The presarva1icn of beef jerky from microbial...Ch. 9 - Prob. 10MCCh. 9 - Which of the following substances would most...Ch. 9 - Which of the following adjectives best describes a...Ch. 9 - Prob. 13MCCh. 9 - Prob. 14MCCh. 9 - Prob. 15MCCh. 9 - Prob. 16MCCh. 9 - Which of the following disinfectants acts against...Ch. 9 - Which of the following disinfectants contains...Ch. 9 - Prob. 19MCCh. 9 - Prob. 20MCCh. 9 - Describe three types of microbes that are...Ch. 9 - Compare and contrast four tests that have been...Ch. 9 - Prob. 3SACh. 9 - Why do warm disinfectant chemicals generally work...Ch. 9 - Why are Gram-negative bacteria more susceptible to...Ch. 9 - Describe five physical methods of microbial...Ch. 9 - Prob. 7SACh. 9 - Prob. 8SACh. 9 - Compare and contrast desiccation and...Ch. 9 - Prob. 10SACh. 9 - Prob. 11SACh. 9 - Prob. 12SACh. 9 - Prob. 13SACh. 9 - What are some advantages and disadvantages of...Ch. 9 - Prob. 15SACh. 9 - Calculate the decimal reduction time (D) for the...Ch. 9 - Prob. 2VICh. 9 - Prob. 1CTCh. 9 - Prob. 2CTCh. 9 - Prob. 3CTCh. 9 - Prob. 4CTCh. 9 - Over 1000 people developed severe diarrhea, and at...Ch. 9 - Prob. 6CTCh. 9 - Prob. 7CTCh. 9 - Prob. 8CTCh. 9 - Prob. 9CTCh. 9 - Prob. 10CTCh. 9 - Prob. 11CTCh. 9 - Where should you place a sterilization indicator...Ch. 9 - Why is liquid water necessary for microbial...Ch. 9 - Prob. 14CTCh. 9 - During the fall 2001 bioterrorist attack in which...Ch. 9 - What common household antiseptic contains a heavy...Ch. 9 - What is the phenol coefficient of phenol when used...Ch. 9 - Prob. 1CM
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- In which type of chromatography, solvents of increasing polarity are passed through a column of silica gel?a) High performance liquid chromatography) Thin layer chromatography) Adsorption chromatography) Gas-liquid chromatographyarrow_forwardIn which type of chromatography, solvents of increasing polarity are passed through a column of silica gel?a) High performance liquid chromatographyb) Thin layer chromatographyc) Adsorption chromatographyd) Gas-liquid chromatographyarrow_forwardGiven the following common laboratory materials, which of the three methods of heat sterilization do you think is the most appropriate and practical to use in sterilizing them ? Why do you think so ? a) empty flask b)L-rod (glass rod c)10 ml glass pipet d) wire needles e)antibiotic solutionarrow_forward
- Why is ionizing radiation more effective than UV radiation forsterilization of food products?arrow_forwardMost living organisms cannot survive at temperature above 450C. How are some microbes able to live in habitats with temperatures exceeding 1000C?arrow_forwardWhat is thin layer chromatography?arrow_forward
- Why does hydrogen peroxide are most effective against probiotics?arrow_forwardAll questions a) Name structures P, Q and R. b) Name substance S . c) What is the enzyme encoded by gene I. Give its function. d) What will happen if substance S is absent in the medium?arrow_forwardWhy might Gamma irradiation be considered better than using UV radiation?arrow_forward
- Filtration does/is NOT...?a) Sterilize heat sensitive liquidsb) Kill microbesc) Sterilize providing pores are exceedingly smalld) Used in preparation of vaccines, vitamins, and drugse) Used to capture microbes in ventilation systems via HEPA filters Which of the following is false?a) Pasteurization does not sterilizeb) Ionization radiation is useful for sterilizing food and pharmaceuticals c) Phenolics can be used as antisepticsd) Isopropyl alcohol can sterilize the skine) Steam autoclaving is an effective means of sterilization Which of the following is not a factor that determines the effectiveness of an antimicrobial agent? a) Time of exposure b) Temperature c) pH d) Concentration of agent e) All of the above are factors that determines the effectiveness of an antimicrobial agent 4. Which of the following is not a specific cell target for antimicrobial agents? a) Capsule b) Cell wallc) Cell membraned) DNA / RNA synthesis e) Protein function 5. Which of the following…arrow_forwardMost living organisms cannot survive at temperature above 450c.How are some microbes able to live in habitat with temperature exceeding 1000c.arrow_forwardWhich of the following methods has the least ability to sterilize below the surface? In other words, which has the least power to penetrate and sterilize? O O a) electron beams b) all of these methods have very little penetrating power c) gamma radiation d) X rays e) ultraviolet (UV) radiation at 260 nm Search a 19arrow_forward
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