Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 7, Problem 7MCQ
The data were obtained from a use-dilution test comparing four disinfectants against Salmonella choleraesuis. G = growth, NG = no growth
7. Which disinfectant(s) is (are) bactericidal?
- a. A, B, C, and D
- b. A, C, and D
- c. A only
- d. B only
- e. none of the above
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Many antibacterial hand soaps contain the chemical agent _____ , which belongs to the _____ antimicrobial category.
a. sodium hypochlorite; halogen
b. triclosan; phenolic
c. sodium chlorite; halogen
d. ethanol; alcohol
1. Illustrate in a diagram the identification scheme from gram-positive cocci.2. Discuss the principle involved in the biochemical tests in identifying species of staphylococci.3. Illustrate in a diagram the identification scheme for Streptococci.4. Discuss the principle involved in the biochemical tests in identifying species of Streptococci.
ulase
d. Summerase
Will also be positive for
13. Which of the following sugars are NOT used in TSI media?
a. Fructose
b. Sucrose
c. Dextrose
d. Lactose
14. An organism which is positive for the CAMP test must be a(n)
a. Group A Streptococci
b. Staphylococci
c. Group B Streptococci
d. Enterococci
ben
ben lyttem
15. The indole test is done to see if a microorganism can hydrolyze
a. Urea
b. Tryptophan
c. Starch
d. Lipids
to eradiem vhinebi dan di beau al la
>2 19rito yns noril relast wobiseid setu ovisis
BUO
6. You inoculate an unknown Streptococcal species into 6.5% sodiu
and it grows! This means you must have
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 - To determine the lethal action of microwave...Ch. 7 - A use-dilution test was used to evaluate two...Ch. 7 - Entamoeba histolytica and Giardia lamblia were...Ch. 7 - Between March 9 and April 12five chronic...Ch. 7 - Prob. 3CAE
Additional Science Textbook Solutions
Find more solutions based on key concepts
__________type of respiration that uses molecules other than O2 as final electron acceptors
Study Guide for Campbell Biology
What type of culture medium would increase the size of a bacterial capsule?
Laboratory Experiments in Microbiology (11th Edition)
Biogeochemical cycling involves three primary steps: __________, __________, and ______.
Microbiology with Diseases by Taxonomy (5th Edition)
Organisms with the genotypes AABbCcDd and AaBbCcDd are crossed. What are the expected propor-tions of the follo...
Genetic Analysis: An Integrated Approach (3rd Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Alpe Describe the tests used to identify Strep, and use a dichotomous key to successfully identify an unknown (what to look for in each) a. Hemolysis b. Optochin sensitivity c. Bacitracin sensitivity d. Growth in high salt environmentarrow_forwarda. Name four categories that blood agar fits.b. Name four differential reactions that TSIA shows.c. Observe figure 2 . Suggest what causes the difference in growthpattern between nonmotile and motile bacteria. d.Explain what a medium that is both selective and differential does,using figure1 .arrow_forward2. Which of the following statements is true regarding steam sterilization? a. It is a universal technique, applicable to a product of any nature. b. At the same temperature, usually more effective than dry heat. c. Steam sterilization is amenable to a continuous workflow. d. The purpose of the steam is to keep the product from drying out during sterilization. Steam cannot be combined any other sterilization technique. е.arrow_forward
- Merthilate Mercurocheme Listerine mouthwash Signal mouthwash 5. Which disinfectant in Fig. A would you use to clean your bathroom? a. Signal mouthwash b. iodine c. Listerine d. Mercurochrome e. Merthiolate you use? 6. To remove carbon dioxide from pyruvate, which one of the following organisms would a. B. cereus-VP+ b. S. aureus-catalase + c. E. coli- Decarboxylase + d. P. vulgaris- lipase + e. E. aerogenes- Gelatinase + 7. After adding Kovac's reagent to your test tube, you noticed a magenta color which indicates that is being metabolized. a. tryptophan b. leucine c. glucose d. sucrose e. lactose Fig. A 8. A positive methyl red test indicates a. the presence of acetoin b. a probable negative vp test c. mixed acid fermentation d. a pH of 7 or more e. b & c 11arrow_forward10. Which one of the following methods of antimicrobial susceptibility testing combines some of the properties of two other methods and involves adding a plastic strip to the agar? a. Gradient diffusion method b. Agar macrodilution method c. Disk diffusion method d. Broth microdilution method 11. Most ATP molecules are produced during which phase of aerobia respiration? a. Fermentation b. Krebs cycle c. Glycolysis d. Electron transport chain 12. The goal of disinfection is to eliminate ____ whereas the goal of sterile technique is to exclude ____ a. bacteria , bacteria and viruses b. pathogens, all microorganisms c. nonpathogenspathogens d. all microorganisms, pathogens 13. Which one of the following statements about archaea is false? Select one: a. The cell walls of archaea contain a thicker layer of peptidoglycan than the cell walls of bacteria. b. Some archaea live in extremely hot environments. c. Archaea are more closely related to eukaryotes than they are to bacteria. d.…arrow_forward2. You use tubes to test aerotolerance of bacteria. From your samples you have 3 results: A. Bacteria growing on the surface. B. Bacteria growing throughout the tube, the agar shows cracks. C. Bacteria growing about 5 mm below the surface. Please interpret each bacterial result. (Give the bacteria an oxygen classification, explain what classification means and interpret the cracks in the agar.) 3. Please explain how the use of an Eosin Methylene Blue Agar plate can help determine the type of fermenters that bacteria are. Please explain thoroughly.arrow_forward
- 19. In the Urease test, an organism positive for urease will turn the media alkaline due the production of a. Uric acid b. Peptone c. Lactic Acid d. Ammonia 20. Antibodies are made by a. Red Blood Cells b. Endothelial Cells c. B Cells d. Natural Killer Cells 21. Baritt's reagent consists of a. a-naphthol and potassium hydroxide b. Hydrochloric acid and alcohol c. Peptone and phenol red d. Lactic acid and methyl red 12T ni beau On o ispua niwelle et lorkinw.et ed teum fast SMAO srl not evitizon ai doirw mainsgo nA ph c. Staphylococcus d. Pseudomonas a. Carboxylic acid; CO2 b. Coagulate; coagulin c. Fibrinogin; fibrin d. Protein; amino acids li esa of snoba 22. The urease test is used to help identify members of of its ability to catalyze urea breakdown faster than any other species a. Enterococci b. Proteus i30oppige 112 2.quei o bina b slobri ent species because otri esipage issodao 12 wor ved Jaum woy ansam air 23. The coagulase test is used to identify microorganisms which can…arrow_forwardhigh temperature washing of dishes for the purpose of decreasing disease transmission is an example of: a. sanitiation b. antisepsis c. autoclaving d. degerming e. none of the abovearrow_forwardObserve the results from a disc-diffusion experiment below. Which antibiotic would you prescribe to a patient with a similar Staphylococci infection? The patient has no known allergies or contraindications for broad-spectrum antibiotics. Remember to use the table above to determine if the bacteria are resistant, susceptible or intermediate. a. Tetracycline b. Streptomycin c. Penicillin d. Norfloxacinarrow_forward
- An elderly man with influenza acquires a case of pneumonia. Gram-positive cocci isolated from his sputum give beta-hemolysis on blood agar. The infection is very difficult to treat. Later, it is shown that the man shared the room with a patient with bone infection. Isolates from both infections were the same. a. Describe 2 biochemical tests that can be used for the definitive diagnosis. b. Describe 2 virulence factors of this pathogen and implicate them in diseases.arrow_forward16. In your experiment, you determined that in 90% lean ground beef, D55=1 min for Salmonella typhi. Which of these is most likely the thermal D55 for this microbe in 80%? A. 2 B. 1 C. 0.5 D. 0.005 E. 0.001arrow_forwardMacConkey (MAC) Agar is used to isolate gram-negative enteric bacteria.Peptone provides nutrients necessary for growth.Bile salts and crystal violet inhibit the growth of gram positive bacteria.Lactose is a carbohydrate. When metabolized, colonies turn the medium pink.Which organism/s will grow in the medium? a. Escherichia coli b. Pseudomonas aeruginosa c. Staphylococcus aureus d. Escherichia coli & Pseudomonas aeruginosa e. Pseudomonas aeruginosa & Staphylococcus aureusarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Comprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage Learning
Comprehensive Medical Assisting: Administrative a...
Nursing
ISBN:9781305964792
Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa
Publisher:Cengage Learning