Brock Biology Of Microorganisms - Package
14th Edition
ISBN: 9780134462660
Author: MADIGAN
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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Which key factor, during Robert Koch’s research, played a major role in the development of his four postulates?
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What is one situation 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?
Chapter 1 Solutions
Brock Biology Of Microorganisms - Package
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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- Why was Van Leeuwenhoek's discovery of the unknown such a milestone achievement for the progress in microbiology? Why do you think there were not too many other discoveries for some time after?arrow_forwardWhy was Van Leeuwenhoek's discovery of the unknown such a milestone achievement for the progress in microbiology?arrow_forwardIn a series of infection experiments, a researcher discovers that the ID50 value for the infectious bacterium Parasiticum mucoides is 2,000, and that the ID50 for another infectious bacterium, Donoteatum thisbacterium, is 150. Given these data, a person exposed to 1,000 bacteria of each type would be more likely to be infected by which bacterium? There is no way to know given the information provided Both infections are equally likely Donoteatum thisbacterium Parasiticum mucoidesarrow_forward
- In a series of infection experiments, a researcher discovers that the ID50 value for the infectious bacterium Parasiticum mucoides is 100, and that the ID50 for another infectious bacterium, Donoteatum thisbacterium, is 15,000. Given these data, a person exposed to 1,000 bacteria of each type would be more likely to be infected by which bacterium? Group of answer choices There is no way to know given the information provided Both infections are equally likely Parasiticum mucoides Donoteatum thisbacteriumarrow_forwardUse the table to answer the question. In 1928, Frederick Griffith injected four groups of mice with different strains of the bacteria, Streptococcus pneumoniae. The smooth strain had a polysaccharide capsule that protected the bacteria from the mouse’s immune system. The rough strain did not have this capsule. The details of each group and the results of the experiment are shown in the table below. Bacteria After injection with bacteria Group 1 smooth strain mice died Group 2 rough strain mice survived Group 3 heat-killed smooth strain mice survived Group 4 rough strain mixed with heat-killed smooth strain mice died Which conclusion about Group 4 is MOST strongly supported by the results of the experiment? A. A virus carried DNA from the smooth strain to the rough strain. B. The rough strain took in DNA from the heat-killed smooth strain. C. The rough strain developed a genetic mutation during binary fission. D. The smooth strain…arrow_forwardpropose a hypothesis regarding the organisms (staphylococcus, escherichia, pseudomonas, and bacillus) that will be resistant to the most disinfectants, and why? if the hypothesis is supported, what specific experimental results will be observed? what would be the independent and dependent variable? zone size, disinfectant type, colony countarrow_forward
- If the pneumonia is caused by bacteria , could you use Koch's postulates? In which case of bacterial pneumonia, could you NOT use Koch's postulate?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_forwardWhy are Koch’s postulates important?arrow_forward
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