Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 4, Problem 1TQ
Summary Introduction
To review:
The bile salts and their effects on the Gram-positive and Gram-negative bacteria.
Introduction:
The composition of a bacterial cell and the cells of other organisms resembles in several aspects. The basic
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
What is the most difficult type of microbial cell or structure to kill? What methods can be used to sterilize a sample contaminated with these?
Material (wound discharge) from a patient with suspected anaerobic wound infection was
sent to the bacteriological laboratory. It is necessary to isolate a pure culture of anaerobic
bacteria.
1. What principle of isolation of pure culture of anaerobic microorganisms will be applied?
2. What methods of creating anaerobic conditions with the participation of aerobic
microorganisms are known?
3. What are the methods of controlling anaerobic conditions?
Is the telluride glycine agar? (TGA) a complex or defined medium? Explain based on its composition. What kind of Media is TGA explaining based on what kind of microorganisms it allows to grow?
Chapter 4 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 4.1 - Prob. 1TQCh. 4.2 - Prob. 1TQCh. 4.2 - Prob. 2TQCh. 4.3 - Prob. 1TQCh. 4.3 - Prob. 2TQCh. 4.3 - Prob. 3TQCh. 4.3 - Prob. 4TQCh. 4.4 - Prob. 1TQCh. 4.4 - Prob. 2TQCh. 4.4 - Prob. 3TQ
Ch. 4.4 - Prob. 4TQCh. 4.4 - Prob. 5TQCh. 4.4 - Prob. 6TQCh. 4.4 - Prob. 7TQCh. 4.4 - Prob. 8TQCh. 4.6 - Prob. 1TQCh. 4 - Prob. 1RQCh. 4 - Prob. 2RQCh. 4 - Prob. 3RQCh. 4 - Prob. 4RQCh. 4 - Prob. 5RQCh. 4 - Prob. 6RQCh. 4 - Prob. 7RQCh. 4 - Prob. 8RQCh. 4 - Prob. 9RQCh. 4 - Prob. 1TQCh. 4 - Prob. 2TQCh. 4 - Prob. 3TQCh. 4 - Prob. 4TQCh. 4 - Prob. 5TQCh. 4 - Prob. 6TQCh. 4 - Prob. 7TQ
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
- Match the expected result (purple, red, or colorless) to the following descriptions of Gram-stained cells. Choices may be used more than once--------- Pseudomonas aeruginosa after decolorizationarrow_forwardWhen is sterilization by filtration preferred over sterilization by heat? Why? What makes heat an effective sterilizing agent? Why are the conditions required for sterilization greater for dry heat (160-180°C for 1-2hrs) than for steam (121°C for 15min)?arrow_forwardExplain why gram negative bacteria in general are more toxic than gram positive bacteria.arrow_forward
- Why do low concentrations of alcohol inhibit Gram-negative bacteria more than Gram-positive bacteria? Explain how the alcohol interacts with: 1) Gram-negative cell wall structures 2) Gram-positive cell wall structuresarrow_forwardExplain why only gram-negative cells undergo decolorization during the gram staining procedure. Cite the purpose of each of the following reagents in a differential staining procedure. Primary stain Mordant Decolorizing Agent Counter stain What might happen if the Gram staining procedure is performed on a culture incubated for a little over a dayarrow_forwardIdentify the oxidase-negative, gram negative bacillus isolated from the blood cultures of a hospitalized patient with a urinary tract infection. The organism produced colorless colonies on MacConkey agar and gives the following biochemical reactions: PAD – positive H2S – positive positive Citrate – positive Ornithine positive Lysine – negative Indole - negative Urease –arrow_forward
- Agar is a complex polysaccharide obtained from seaweed and cannot be digested by most microorganisms. Why does this property make agar an excellent solidifying agent for microbiological media?arrow_forwardDoes the Gram stain provide information regarding a bacterium's susceptibility to antimicrobial drugs? explain your answer?arrow_forwardDetergents that are good micelle formers often have strongantibacterial properties. Considering the structure of thecell membrane, suggest a reason for this antibacterialaction.arrow_forward
- Which disinfectant is the most effective? and why? Which disinfectant(s) is (are) bactericidal? and why?arrow_forwardWhat specifically causes colonies of lactose fermenters to be pink-red on MacConkey agar?arrow_forwardWhat is the optimum growth temperature for most human pathogens? Explain.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Bacterial Structure and Functions; Author: Osmosis;https://www.youtube.com/watch?v=b15Hy3jCPDs;License: Standard youtube license