Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Chapter 10, Problem 1R
Which of the following organisms are most closely related? Are any two the same species? On what did you base your answer?
Expert Solution & Answer
Summary Introduction
To review:
Which of the given organisms are closely related. Any two of the following organisms are same species.
Introduction:
Bacterial species that show similar morphological and biochemical characteristics are generally grouped into a single genus. Characterization of organism using their genomic content denotes that the ratio of guanine and cytosine are similar in related species.
Explanation of Solution
The morphology, Gram reaction, GC percentage, glucose utilization, and presence or absence of cytochrome oxidase of four organisms are provided. The organism A (48-52%) and D (49-53%) possess almost similar amount of guanine and cytosine which is depicted in their GC percentage. However, cytochrome oxidase is present for aerobic respiration is present in organism A and it is absent in organism D. The morphology of both A and D organisms is rod-shaped and they both are gram-positive in nature. Both the organism undergoes fermentation process and utilize glucose. Thus, characteristics of organisms A and D organisms are much closely related compared to other organisms.
Conclusion
By comparing the characteristics of different organisms given, it is clear that organism A and D are most closely related compared to other organisms.
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Students have asked these similar questions
Look at the graphs of other organisms. What observations can you make about the data in the graphs? (Which bases are present in equal numbers here- are they all the same as on your chart?)
Look at the graphs again. Do you notice differences between organisms? What is the difference?
Are there any organisms that are similar? If yes, why do you think those organisms are more similar than others?
Closely related species are grouped together into (singular, ). By the way, what is the singular of “species”?
Imagine you are studying two eukaryotic species. The genome of Species A is 100
Mb in size. The genome of Species B is 500 Mb in size. Based only on this
information, which of the following statements are accurate?
Species B is a more complex organism than Species A.
None of the other statements can be made based solely on the information in
the question.
Species B has more genes than Species A.
Species B has more chromosomes, more genes, and is more complex than
Species A.
Species B has more chromosomes than Species A.
Chapter 10 Solutions
Microbiology: An Introduction
Ch. 10 - Which of the following organisms are most closely...Ch. 10 - Here is some additional information on the...Ch. 10 - DRAW IT Use the additional information below to...Ch. 10 - DRAW IT Use the information in the table below to...Ch. 10 - NAME IT Use the key in the Applications of...Ch. 10 - Sergeys Manual of Systematic Bactenoiogy differs...Ch. 10 - Bacillus and Lactobacillus are not in the same...Ch. 10 - Prob. 3MCQCh. 10 - Which of the following is false about scientific...Ch. 10 - You could identify an unknown bacterium by all of...
Ch. 10 - The wall-less mycoplasmas are considered to be...Ch. 10 - Use the following choices to answer questions 7...Ch. 10 - Prob. 8MCQCh. 10 - Prob. 9MCQCh. 10 - Use the following choices to answer questions 9...Ch. 10 - The GC content of Micrococcus is 66-75 moles %,...Ch. 10 - Describe the use of a DNA probe and PCR for: a....Ch. 10 - SF medium is a selective medium, developed in the...Ch. 10 - Prob. 1CAECh. 10 - Prob. 2CAECh. 10 - Prob. 3CAE
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