Laboratory Experiments in Microbiology (11th Edition)
11th Edition
ISBN: 9780321994936
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 24, Problem 1CA
Summary Introduction
To write:
The most effective disinfectant and the amount of its concentration used.
Introduction:
Disinfectants are the antimicrobial agents designed to inactivate or destroy the microorganisms on the inert surfaces. It does not necessarily kill all microorganisms. It is less effective than sterilization. Disinfectants work by destroying the cell wall of microbes or interfering with their
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Is UVC disinfection of N95 face masks effective?
Give two (2) important considerations for UVC disinfection of N95 face masks to be effective?
Discuss the following:
Listeria monocytogenes (Listeriosis)
Microscopy
Identification tests used (at least 1)
Mention any three (3) fluids used in cleaning lenses in the microbiological laboratory.
Chapter 24 Solutions
Laboratory Experiments in Microbiology (11th 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
- Describe characteristics of Streptococcus Agalactiae in the Agar: (How does colonies look like (color) and explain does it grow on that agar. Blood Agar (Aerobic) MacConkey EMB PEA Mannitol Salt Agar Chocolate Agar Nutient Agararrow_forwardIs it important to have a standardized way of counting and reporting AFB seen on a direct sputum smear? Why or why not?arrow_forward1) Which of the following apply to alcohols? Mark ALL that apply: - disinfect items that are soaking in it - denature proteins (50-90%) - at 50% and higher disrupt lipid membranes of cells - can be used as an antiseptic wipe - one of the best things to put on a cut or scrape 2)What would you use when you know the causative microbe of the disease in your patient? -A narrow spectrum antimicrobial-A broad spectrum antimicrobial -Neither, you would let the patient heal by themselves -Both broad spectrum and narrow spectrum antimicrobialarrow_forward
- Define the following: 1. Asepsis: 2. Disinfectant: 3. Antiseptic: 4. Sanitization: 5. Bacteriostatic: 6. Bactericidal: 7. Thermal death point (TDP): 8. Thermal death time (TDT): 9. Decimal Reduction Time (DRT):arrow_forwardWhich among the group would be affected when excessive Zn++ is present in the medium? Provide two (2) corrective actions to resolve this error.arrow_forwardExplain why the media where the Staphylococcus aureus is plated has turned yellow but the media where Staphyloccocus epidermidis plated is still pink? The media used would be the Mannitol Salt Agar Medium.arrow_forward
- Identify what microorganisms are in each of the 10 plates from studying the gram stain and agar plates,and if they have any known antimicrobial resistancearrow_forwardDescribe the microscopic morphology of each sample observed with a Gram stain (S. aureus, P. aeruginosa, B. subtilis and dental plaque). Indicate the Gram reaction of each.arrow_forwardDiscuss the following: Listeria monocytogenes (Listeriosis) Microscopy - what does it look like under the microscope, shape, color, how can it be differentiated from others Identification tests used (at least 1)arrow_forward
- Preservatives are added to the following pharmaceutical products EXCEPT Select one: Ophthalmic solutions Injections in eye tissues Non-sterile Ointments Multi-dose sterile productsarrow_forwardWhat is this organism? And what other test could be done to confirm it's identification? 1.Gram stain - positive cocci, chains Catalase - weak positive Hemolysis - beta BE - positive NaCl- positive Bacitracin - no zone of inhibition PYR - positive Answer: Enterococcus spp. CAMP test to verify the identity 2.Gram positive cocci, chains Catalase - negative Hemolysis - alpha BE - negative NaCl - negative P disk - resistant Bile Solubility - negative Answer - viridans group, Use PYR test to verifyarrow_forwarddiscuss the clinical significance, principles, reagents (if any) and positive and negative results of the following laboratory tests for Gram positive cocci organisms: Bile esculin test 5% salt turbidity or tolerance test PYRase test Pyruvate broth testarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you