BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 27, Problem 2S
Summary Introduction
To determine:
The reason how the polysaccharide capsule found in the virulent strain of the bacteria is responsible for the cause of pneumonia in mice and justification that
Introduction:
Frederick Griffith conducted the experiments in mice and used two strains of bacteria for infecting the mice namely the rough and smooth strains. The rough strain of the bacteria “Streptococcus” did not cause infection in the mice whereas the smooth strain of the mice has a polysaccharide capsule layer which causes infection in the mice.
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Chapter 27 Solutions
BIOLOGY
Ch. 27.1 - Prob. 1LOCh. 27.1 - Prob. 2LOCh. 27.1 - Describe classification systems for prokaryotes.Ch. 27.2 - Prob. 1LOCh. 27.2 - Prob. 2LOCh. 27.2 - Prob. 3LOCh. 27.3 - Prob. 1LOCh. 27.3 - Prob. 2LOCh. 27.3 - Prob. 3LOCh. 27.4 - Describe the metabolic strategies employed by...
Ch. 27.4 - Compare and contrast the ways prokaryotes can...Ch. 27.5 - Describe the role of prokaryotes in biogeochemical...Ch. 27.5 - Prob. 2LOCh. 27.5 - Prob. 3LOCh. 27.6 - Prob. 1LOCh. 27.6 - Prob. 2LOCh. 27.6 - Prob. 3LOCh. 27 - Data analysis If the excision of an F plasmid Is...Ch. 27 - Prob. 1IQCh. 27 - Prob. 1UCh. 27 - A bacteria that obtains carbon from the atmosphere...Ch. 27 - Prob. 3UCh. 27 - Bacteria and archaebacteria may be distinguished...Ch. 27 - Prob. 5UCh. 27 - Prob. 6UCh. 27 - Prob. 7UCh. 27 - Prob. 1ACh. 27 - Prob. 2ACh. 27 - Prob. 3ACh. 27 - Prob. 4ACh. 27 - Prob. 5ACh. 27 - Some bacteria are capable of forming NH4+ from...Ch. 27 - Prob. 7ACh. 27 - Prob. 1SCh. 27 - Prob. 2SCh. 27 - Use of multiple antibiotics is not a bad idea if...Ch. 27 - Soil-based nitrogen-fixing bacteria appear to be...
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- In Kornberg’s initial experiments, it was rumored that he grew E. coli in Anheuser-Busch beer vats. (Kornberg was working at Washington University in St. Louis.) Why do you think this might have been helpful to the experiment?arrow_forwardYou have discovered a new species of archaea from a hot spring in Yellowstone National Park. After growing a pure culture of this organism, what strategy might you employ to sequence its genome?arrow_forwardHow has X-ray diffraction and the discovery of the structure of deoxyribonucleic acid (DNA) enhanced and progressed our understanding and in what has this been beneficial or detrimental to society? ( Long response )arrow_forward
- Please answer the following questions using numbers and not text. For example, if you think the answer is 24, write 24 and not twenty-four. If you think the answer is 24 ATP, write only the number 24. As a microbiology technician, your job is to characterize a novel bacterial strain isolated from insects. Phenotypically, you have discovered that the new bacterial strain can grow in the presence or absence of oxygen. After genome sequencing and biochemical characterization, you know that your new organism is capable of making all of the enzymes necessary for glycolysis and the TCA cycle, and that it has an electron transport chain. Answer the following questions based on the growth of your organism on minimal media plates containing only acetate as a carbon and energy source. Acetate is transported across the membrane at the cost of 3 ATP per molecule. Each question should be answered based on the metabolism of one molecule of acetate. If you come up with a negative value, indicate an…arrow_forwardA patient presents with the Sickle Cell Trait. How did this disease develop in the DNA and howdoes this translate to how the protein is produced in the cell?arrow_forwardWhat was the first, DNA or RNA? Justify your answer with solid reasonarrow_forward
- Describe 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_forwardFor instance, what would happen if ice-minus bacterial genes were transferred to strains of bacteria that are accustomed to living under cold conditions? ( Should genetically engineered microbes be released even in “controlled” experiments that might result in beneficial applications of biotechnology? How do you think the scientific field can prevent the escape of genetically altered microbes in field experiments?arrow_forwardBacteria called extremophiles are able to grow in hot springs such as Old Faithful at Yellowstone National Park in Wyoming. Do you think that the DNA of extremophiles would have a higher content of GC or AT base pairs? Justify your answer.arrow_forward
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