Brock Biology of Microorganisms (14th Edition)
14th Edition
ISBN: 9780321897398
Author: Michael T. Madigan, John M. Martinko, Kelly S. Bender, Daniel H. Buckley, David A. Stahl, Thomas Brock
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 2AQ
Describe the lines of proof Robert Koch used to definitively associate the bacterium Mycobacterium tuberculosis with the disease tuberculosis. How would his proof have been flawed if any of the tools he developed for studying bacterial diseases had not been available for his study of tuberculosis?
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What else was unexpected in Griffith's experiment?
a. )Griffith recovered infectios S train pneumonococci from the heart of the live mice
b.)Griffith recovered infectios S train pneumonococci from the heart of the dead mice
c.)Griffith recovered infectios R train pneumonococci from the heart of the live mice
d.) Griffith recovered infectios R train pneumonococci from the heart of the live mice
Why are Koch’s postulates important?
Which key factor, during Robert Koch’s research, played a major role in the development of his four postulates?
Chapter 1 Solutions
Brock Biology of Microorganisms (14th Edition)
Ch. 1.1 - If microbial life had not evolved, would you be...Ch. 1.1 - Prob. 2MQCh. 1.2 - Prob. 1MQCh. 1.2 - Prob. 2MQCh. 1.2 - Prob. 3MQCh. 1.3 - How old is Earth and when did cells first appear...Ch. 1.3 - Why were cyanobacteria so important in the...Ch. 1.3 - Prob. 3MQCh. 1.3 - Prob. 4MQCh. 1.4 - How does a microbial community differ from a...
Ch. 1.4 - Prob. 2MQCh. 1.4 - Prob. 3MQCh. 1.4 - Prob. 4MQCh. 1.5 - Prob. 1MQCh. 1.5 - Prob. 2MQCh. 1.5 - Prob. 3MQCh. 1.6 - Prob. 1MQCh. 1.6 - Prob. 2MQCh. 1.7 - Prob. 1MQCh. 1.7 - Besides ending the controversy over spontaneous...Ch. 1.8 - How do Kochs postulates ensure that cause and...Ch. 1.8 - What advantages do solid media offer for the...Ch. 1.8 - Prob. 3MQCh. 1.9 - What is meant by the term enrichment culture?Ch. 1.9 - Prob. 2MQCh. 1.10 - Prob. 1MQCh. 1 - Prob. 1RQCh. 1 - How can prokaryotic and eukaryotic cells be...Ch. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Prob. 5RQCh. 1 - Prob. 6RQCh. 1 - Explain the principle behind the Pasteur flask in...Ch. 1 - Prob. 8RQCh. 1 - Prob. 9RQCh. 1 - What were the major microbiological interests of...Ch. 1 - Select one major subdiscipline of microbiology...Ch. 1 - Pasteurs experiments on spontaneous generation...Ch. 1 - Describe the lines of proof Robert Koch used to...Ch. 1 - Imagine that all microorganisms suddenly...
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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
- You are given two samples of DNA, one from Clostridium perfringens and the other from Mycobacterium tuberculosis. Unfortunately, the labels on the tubes of DNA were accidentally removed, and you do not know which DNA sample belongs to which organism. As you were doing some work with Escherichia coli in the lab, you also have some of its DNA available as well. The %G + %C values for each of the organisms is known (C. perfringens, 27%; M. tuberculosis, 67%; E. coli, 50%). Based upon this information, how could you quickly determine the source of the DNA for your two samples?arrow_forwardthe following are the steps, listed in random order, for utilizing koch's postulates. what should be the second step out of the four listed? a. a microorganism is found to be present in every case of a disease. b. the same microbe discovered previously is isolated from the purposely infected host c. the pathogen is isolated and grown in pure culture d. the same disease results after isolated organism is inoculated into healthy hostarrow_forwardName two or more situations where Koch’s postulates are impossible to complete? In other words, what factors about a microbe or factors about a disease make it impossible for Koch's postulate to be performed with that microbe or disease?arrow_forward
- I'm looking for someone who knows malinoswki. What are the three parts of the method that Malinowski proposes and what type of information and what method does each part entail?arrow_forwardDescribe the experiment done by Frederick Griffith in 1928, where the non-lethal (rough) strain of Streptococcus pneumoniae bacteria killed experimental mice when mixed with the heat-killed smooth strain. Discuss what may have happened to the rough strain after the heat-killed smooth strain was introduced and why you think the rough strain killed the mice. What would be the conclusion and significance of this study and its finding?arrow_forwardWhat were the advantages to Gorter & Grendel of using red blood cells for their experiment?arrow_forward
- You work in a microbiology lab has been assigned to make routine identifications of Citrobacter freundii, Lactobacillus casei,Pseudomonas fluorescens, and Staphylococcus epidermidis. Using the dichotomous keys write up a lab protocol that everyone in your lab can use to identify these four organisms from the samples that your lab will receive. Create a Dichotomous Key(s) and an explanation.arrow_forwardWhat is an original research? Do you think the following are ideas that may be considered as original? Support your answer with logical reasons in each case : a. Investigation of size of bacterial cells b. Evaluation of impact of CO2 on the environment c. Diversity of microorganisms in the fields of Kohat University d. Investigation of new compounds in a bacterial culture e. Application of a strain of bacteria you isolated from the soil as PGPRarrow_forwardThe first step for directly linking a microbe to a specific disease according to Koch's postulates is to A.isolate microbes from the blood of healthy animals. B. culture the blood or other body fluid from a diseased animal using nutrient medium. C. inject a sample of blood or other body fluid from a diseased animal into a healthy animal. D. obtain a sample of blood or other body fluid from a diseased animal.arrow_forward
- All of the following apply to Luria and Delbruck’s 1943 study of mutation rates in E. Coli and T1 phage except: A) it served as an example of an inflexible test B) it involved looking for T1-resistant bacteria as an end measure C) it showed that numbers of mutant organisms observed after T 1 phage were added to the culture tended to vary from experiment to experiment D) it rejected the possibility of adaptive mutations E) it supported the concept of spontaneous mutation ratesarrow_forwardThe following are the limitations of Koch's postulates EXCEPT: A. some pathogens cannot grow on artificial media and therefore cannot be identified as the causative agent of the disease B. some diseases involve multiple pathogens which produce similar symptoms making it difficult to pinpoint the causative agent C. some diseases are host-specific and re-inoculation may pose ethical concerns D. some microorganisms are present in the body fluids of the infected animal which make them difficult to be culturedarrow_forwardWhy is it Koch's postulates cannot be used for the microbe E. Coli. What limitations does E.coli have?arrow_forward
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