Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Chapter 7, Problem 3MCQ
Summary Introduction
Introduction:
All cells are surrounded by a plasma membrane. The membrane is composed of a phospholipid bilayer arranged back-to-back. The membrane is also covered in places with cholesterol molecules and proteins. Disinfecting without disrupting the plasma membrane requires organic compound like iodine.
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Chapter 7 Solutions
Microbiology: An Introduction
Ch. 7 - The thermal death time for a suspension of...Ch. 7 - If pasteurization does not achieve sterilization,...Ch. 7 - Thermal death point is not considered an accurate...Ch. 7 - Prob. 4RCh. 7 - DRAW IT A bacterial culture was in log phase in...Ch. 7 - How do autoclaving, hot air, and pasteurization...Ch. 7 - How do salts and sugars preserve foods? Why are...Ch. 7 - Prob. 8RCh. 7 - A large hospital washes burn patients in a...Ch. 7 - Prob. 10R
Ch. 7 - Which of the following does not kill endospores?...Ch. 7 - Which of the following is most effective for...Ch. 7 - Prob. 3MCQCh. 7 - Which of the following cannot be used to sterilize...Ch. 7 - Prob. 5MCQCh. 7 - The data were obtained from a use-dilution test...Ch. 7 - The data were obtained from a use-dilution test...Ch. 7 - Prob. 8MCQCh. 7 - A classmate is trying to determine how a...Ch. 7 - Which of the following is most likely to be...Ch. 7 - Prob. 1ACh. 7 - For each of the following bacteria, explain why it...Ch. 7 - A use-dilution test was used to evaluate two...Ch. 7 - To determine the lethal action of microwave...Ch. 7 - Entamoeba histolytica and Giardia lamblia were...Ch. 7 - Between March 9 and April 12five chronic...Ch. 7 - Prob. 3CAE
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- Choose the combination of answers that most accurately completes the statement.Detergents are a. high-level germicides c. excellent antiseptics b. low-level germicides d. used in disinfecting surgical instrumentsarrow_forwardWhich of the following are antimicrobial halogens? Select all that apply. a. iodophores b. bromine c. chlorine d. iodinearrow_forwardWhich of following statements is TRUE about antiseptics and disinfectants? A. Disc diffusion works because the disc is soaked in bacteria and is the exposed to antimicrobial. B. You can tell the characteristics of the zone inhibition whether an organism is cidal or static in its effect. C.The shape of an object being cleaned may influence the effectiveness of germicides D. Gram + organisms are more resistant than Gram - organisms E. A large zone of inhibition shows bactericidal effectarrow_forward
- The most versatile method of sterilizing heat-sensitive liquids isa. UV radiation b. exposure to ozone c. beta propiolactone d. filtrationarrow_forwardwhich of the following is best to sterilize heat-liable (sensitive) solutions? a, pasteurization b. autoclave c. dry heat d. filration e. none of the abovearrow_forwardChoose the combination of answers that most accurately completes the statement. Detergents are a. high-level germicides c. excellent antiseptics b. low-level germicides d. used in disinfecting surgical instruments followingarrow_forward
- Neutralization of residual disinfectant could be made by: a. Dilution if the concentration exponent is high b. Dilution if the concentration exponent is low c. Adding specific agent e.g. 3% Tween 80 d. Either a or c e. Either b or carrow_forwardThe mechanical removal of microbes from a limited area of living tissue is referred to as -- a. None of the above b. disinfection c. pasteurization d. antisepsis e. sterilizationarrow_forwardThe culture medium that contains penicillin is a type of ________media. A. Complex B. Reducing C. Differential D. Selective E. Chemically definedarrow_forward
- Silver sulfadiazine is useda. in antisepsis of burns b. as a mouthwash c. to treat genital gonorrhea d. to disinfect waterarrow_forwardIf you streak a sample from your nose onto a Mannitol salt agar plate and the medium turns yellow, what does that tell you? (choose all that apply) a. The organism is a yeast b. The organism ferments mannitol c. The organism is beta-hemolytic d. The organism is likely Staphylococus aureus e. The organism is acid tolerantarrow_forwardA compound synthesized by bacteria or fungi that destroys or inhibitsthe growth of other microbes is a(n)a. synthetic drug b. antibiotic c. antimicrobial drug d. competitive inhibitorarrow_forward
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