Brock Biology Of Microorganisms - Package
14th Edition
ISBN: 9780134462660
Author: MADIGAN
Publisher: PEARSON
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Textbook Question
Chapter 5.19, Problem 2MQ
Describe how the minimum inhibitory concentration of an antibacterial agent is determined.
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Differentiate between minimum inhibitory concentration (MIC) and minimum bactericidal concentration. (MBC).
Draw a diagram to illustrate the procedure for the determination of the minimum inhibitory concentration of antimicrobial agents.
Describe two mechanisms by which antibacterial drugs acton microorganisms.
Chapter 5 Solutions
Brock Biology Of Microorganisms - Package
Ch. 5.1 - Summarize the steps that lead up to binary fission...Ch. 5.1 - Define the term generation. What is meant by the...Ch. 5.2 - Prob. 1MQCh. 5.2 - Prob. 2MQCh. 5.2 - Prob. 3MQCh. 5.3 - Prob. 1MQCh. 5.3 - Prob. 2MQCh. 5.3 - Prob. 3MQCh. 5.4 - What are autolysins and why are they necessary?
Ch. 5.4 - What is the function of bactoprenol?
Ch. 5.4 - What is transpeptidation and why is it important?
Ch. 5.5 - What is a semilogarithmic plot and what...Ch. 5.5 - Prob. 2MQCh. 5.5 - Prob. 3MQCh. 5.6 - In which phase of the growth curve do cells divide...Ch. 5.6 - Prob. 2MQCh. 5.6 - Prob. 3MQCh. 5.7 - How do microorganisms in a chemostat differ from...Ch. 5.7 - What happens in a chemostat if the dilution rate...Ch. 5.7 - Do pure cultures have to be used in a chemostat?Ch. 5.8 - What are some of the problems that can arise when...Ch. 5.8 - Using microscopic techniques, how could you tell...Ch. 5.9 - Why is a viable count more sensitive than a...Ch. 5.9 - Describe how you would dilute a bacterial culture...Ch. 5.9 - Prob. 3MQCh. 5.10 - List two advantages of using turbidity as a...Ch. 5.10 - Describe how you could use a turbidity measurement...Ch. 5.11 - How does a hyperthermophile differ from a...Ch. 5.11 - Prob. 2MQCh. 5.11 - E. coli can grow at a higher temperature in a...Ch. 5.12 - Prob. 1MQCh. 5.12 - What molecular adaptations to cold temperatures...Ch. 5.13 - Which phylogenetic domain includes species with...Ch. 5.13 - How does the membrane structure of...Ch. 5.13 - What is Taq polymerase and why is it important?Ch. 5.14 - How does the concentration of H+ change when a...Ch. 5.14 - What terms are used to describe organisms whose...Ch. 5.15 - What is the aw of pure water? What is the lower...Ch. 5.15 - What are compatible solutes, and when and why are...Ch. 5.16 - How does an obligate aerobe differ from a...Ch. 5.16 - How does a reducing agent work? Give an example of...Ch. 5.16 - How does Superoxide dismutase or superoxide...Ch. 5.17 - Why is heat an effective sterilizing agent?Ch. 5.17 - What steps are necessary to ensure the sterility...Ch. 5.17 - Distinguish between the sterilization of...Ch. 5.18 - Define D10 and explain why the killing dose for...Ch. 5.18 - Prob. 2MQCh. 5.18 - Prob. 3MQCh. 5.19 - Distinguish between the antimicrobial effects of...Ch. 5.19 - Describe how the minimum inhibitory concentration...Ch. 5.19 - Distinguish between a sterilant, a disinfectant,...Ch. 5 - Prob. 1RQCh. 5 - Describe the role of proteins present at the...Ch. 5 - Prob. 3RQCh. 5 - Describe how new peptidoglycan subunits are...Ch. 5 - Prob. 5RQCh. 5 - Describe the growth cycle of a population of...Ch. 5 - How does a chemostat regulate growth rate and cell...Ch. 5 - How does a viable count differ from a total count?Ch. 5 - How can turbidity be used as a measure of cell...Ch. 5 - Prob. 10RQCh. 5 - Prob. 11RQCh. 5 - Concerning the pH of the environment and of the...Ch. 5 - How does a halophile maintain positive water...Ch. 5 - Prob. 14RQCh. 5 - Prob. 15RQCh. 5 - Contrast the terms thermal death time and decimal...Ch. 5 - Prob. 17RQCh. 5 - Prob. 18RQCh. 5 - Prob. 19RQCh. 5 - Describe the procedure for obtaining the minimum...Ch. 5 - Prob. 21RQCh. 5 - A medium was inoculated with 5 106 cells/ml of...Ch. 5 - Escherichia coli but not Pyrolobus fumarii will...Ch. 5 - In which direction (into or out of the cell) will...
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- Draw a diagram to illustrate the procedure for the determination of the minimum inhibitory concentration (MIC) of antimicrobial agents.arrow_forwardExplain the effect of beta-lactamase in antimicrobial resistance. Include: who produces it, why it causes resistance, how it causes resistance.arrow_forwardDistinguish minimum inhibitory concentration (MIC) from minimum bactericidal concentration (MBC). Create a diagram to show how minimum bactericidal concentration is tested.arrow_forward
- Given that both human cells and pathogens synthesize proteins at ribosomal sites, how can antimicrobial agents that target this process be safe to use in humans?arrow_forwardThe effect of uncompetitive inhibitor is reversed by increasing substrate concentration?arrow_forwardCompare the action of microbicidal and microbistatic agents, providing anexample of each.arrow_forward
- Cite metabolites, other that antibiotics, produced by microorganisms that can inhibit the growth of other microorganisms. In what general way are these different from antibiotics?arrow_forwardMention and describe the two types of bacterial resistance to antibiotics. And which of the following elements isn't consider a macronutrient?arrow_forwardIndicate in the boxes the activity inhibited by the antibioticsand list some antibiotics which exhibit that activity.arrow_forward
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