BIO 102 General Biology II Updated Edition (Tidewater Community College)
3rd Edition
ISBN: 9781259614064
Author: Tidewater Community College
Publisher: MCG CUSTOM
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Chapter 17, Problem 16WIO
Mycobacterium tuberculosis causes most cases of tuberculosis. Strains of this bacterium that are resistant to all known antibiotics have become increasingly common. Explain how this change occurred; use the terms mutation, DNA, and natural selection in your answer.
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Chapter 17 Solutions
BIO 102 General Biology II Updated Edition (Tidewater Community College)
Ch. 17.1 - What are two domains that contain prokaryotes?Ch. 17.1 - Prob. 2MCCh. 17.1 - Prob. 3MCCh. 17.1 - Why are most species of prokaryotes little...Ch. 17.2 - Prob. 1MCCh. 17.2 - Prob. 2MCCh. 17.2 - What does the Gram stain reveal about a cell?Ch. 17.2 - Prob. 4MCCh. 17.2 - Prob. 5MCCh. 17.2 - How are molecular data changing microbial...
Ch. 17.2 - Prob. 7MCCh. 17.3 - Prob. 1MCCh. 17.3 - Prob. 2MCCh. 17.3 - Prob. 3MCCh. 17.4 - Prob. 1MCCh. 17.4 - Prob. 2MCCh. 17.4 - What adaptations enable pathogenic bacteria to...Ch. 17.4 - What are some practical uses of bacteria and...Ch. 17.5 - Prob. 1MCCh. 17.5 - Prob. 2MCCh. 17 - A prokaryotic cell is one that a. lacks DNA. b....Ch. 17 - Which of these is a distinguishing characteristic...Ch. 17 - What feature distinguishes the cell walls of...Ch. 17 - What type of organism may use inorganic chemicals...Ch. 17 - Prob. 5MCQCh. 17 - Prob. 6MCQCh. 17 - Prob. 7MCQCh. 17 - Prob. 8MCQCh. 17 - Explain why the antibiotics penicillin and...Ch. 17 - Why do some microbiologists disagree with...Ch. 17 - Give five examples that illustrate how bacteria...Ch. 17 - If you were developing a new "broad-spectrum"...Ch. 17 - Describe your own metabolic classification: Are...Ch. 17 - Prob. 6WIOCh. 17 - Ernst Mayr defined a biological species as a...Ch. 17 - Why did the discovery of archaea generate interest...Ch. 17 - Prob. 9WIOCh. 17 - Prob. 10WIOCh. 17 - Ecosystems rely on nitrogen -fixing bacteria,...Ch. 17 - Prob. 12WIOCh. 17 - Prob. 13WIOCh. 17 - Prob. 14WIOCh. 17 - Prob. 15WIOCh. 17 - Mycobacterium tuberculosis causes most cases of...Ch. 17 - Add autotrophs, heterotrophs, phototrophs, and...Ch. 17 - Prob. 2PITCh. 17 - Prob. 3PITCh. 17 - Prob. 4PITCh. 17 - Prob. 6PIT
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- Explain the process of adaptation of individual organisms to their environment (i.e. some disease-causing bacteria in a bacterial population can survive exposure to antibiotics due to slight genetic variations from the rest of the population, which allows successful surviving bacteria to pass on antibiotic resistance to the next generation)arrow_forwardIs the following statement true? “Antigenic drift and other mutations to the DNA of viruses are always beneficial for the virus.” Yes, because mutated viruses are able to infect more hosts. No, because mutated viruses are may be less likely to replicate. Yes, because mutated viruses have less mRNA so they can copy and replicate faster. No, because different mutations cause a variety of immune responses. Stuck between 1st and 2nd answers. I think it's the 2nd, but would like confirmation. Thanks.arrow_forwardSome advocate stockpiling the drug Tamiflu in the event of an influenza pandemic. Others point out that wealthy, Western nations would have an unfair advantage because developing nations (where the pandemic is most likely to start) would not have access to this expensive antiviral. Furthermore, some fear that indiscriminate use of the drug would promote the evolution of resistant flu strains. Given these caveats, do you think developed nations should stockpile Tamiflu for the protection and treatment of their citizens? Explain your answerarrow_forward
- 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_forwardGo to the NCBI’s website at https://ncbi.nlm.nih.gov On the database dropdown menu, select “Gene” and search for “RB1.” The first entry should be on the Homo sapiens version; click the gene name. Use the information to answer the following: Return to the RefSeq section in the Gene Database for RB1 (back click once from where you were for part c). Click on the link under “mRNA and Protein(s)” listed as NM_000321.3. This will take you to the mature mRNA sequence data: a. Scroll back up to “Features.” As you are scrolling, count the number of “exon” links there are. What is an exon? How many exons make up the RB1 transcript? b. As you scroll through the “Features” list, observe some of the miscellaneous features (“misc_feature”) of the transcript. These are examples of annotations, which give more information about the sequence than just the order of bases. For example, “misc_feature 916…918” is a “phosphothreonine, by CDK1.” What information can you interpret from this annotation?…arrow_forwardGo to the NCBI’s website at https://ncbi.nlm.nih.gov On the database dropdown menu, select “Gene” and search for “RB1.” The first entry should be on the Homo sapiens version; click the gene name. Use the information to answer the following: Return to the RefSeq section in the Gene Database for RB1 (back click once from where you were for part c). Click on the link under “mRNA and Protein(s)” listed as NM_000321.3. This will take you to the mature mRNA sequence data: a. How many bases long is the full-length RB1 mRNA transcript? b. Scroll down to “Features.” Click on “CDS.” This will highlight the coding sequence region of the RB1 mRNA. This is the sequence that will be translated into a protein. At what positions (numbers) does the coding sequence start and stop? How long is the coding sequence? How many amino acids should this encode for? (HINT: does the stop codon encode an amino acid?)arrow_forward
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