Connect Access Card For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411126
Author: Larson, Allan; Hickman, Jr., Cleveland P; Keen, Susan L.; Eisenhour, David J
Publisher: MCG
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Chapter 1, Problem 7RQ
Summary Introduction
To hypothesize: The series of events through which the bacteria present in the gut of cattle becomes essential for the survival of cattle.
Introduction: The microbiome present in the gut of cattle is essential for the survival of the cattle as it digests the cellulose for their nutrition. A series of events explains the evolution of bacteria from the one which is not needed for survival to the one which has become necessary for survival.
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Chapter 1 Solutions
Connect Access Card For Integrated Principles Of Zoology
Ch. 1 - Why is life difficult to define?Ch. 1 - What are the basic chemical differences that...Ch. 1 - Describe the hierarchical organization of life....Ch. 1 - What is the relationship between heredity and...Ch. 1 - Describe how evolution of complex organisms is...Ch. 1 - Using characteristics of how they obtain...Ch. 1 - Prob. 7RQCh. 1 - What are the essential characteristics of science?...Ch. 1 - Use studies of natural selection in British moth...Ch. 1 - How do we distinguish the terms hypothesis,...
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- Bacteria populations displayed genetic variation such as antibiotic resistance due to mutation which is the likely source of mutationarrow_forwardIn patients with nonresistant strains of the tuberculosis bacterium, antibiotics can relieve symptoms in a few weeks. However, it takes much longer to halt the infection, and patients may discontinue treatment while bacteria are still present. Explain how this could result in the evolution of drug-resistant pathogens.arrow_forwardWhich statement best summarizes the life cycle of Plasmodium falciparum, the organism that causes malaria? A. P. falciparum has a mutualistic relationship with mosquitoes for its entire life cycle. B. P. falciparum is a parasite that requires mosquitoes as hosts for its entire life cycle. C.P. falciparum is a parasite that requires mosquitoes and red blood cells as hosts at different points in its life cycle. D. P. falciparum has a mutualistic relationship with mosquitoes and red blood cells at different points in its life cycle.arrow_forward
- Based on what you know about the mechanisms through which the effective antibiotics work, describe ways in which a population of coli resistant to these drugs could evolve. How does this relate to the theory of evolution by natural selection?arrow_forwardUsing evidence from the text, what factors influenced the survival of humans during the bubonic plague? Please explain in 1 to 2 sentences STOP COPYING FROM THE INTERNET USE EVIDENCE FROM THE TEXT!!!arrow_forwardAccording to the endosymbiotic theory, why was it adaptive for the larger (host) cell to keep the engulfed cell alive, rather than digesting it as food? A. The host cell would have been poisoned if it had digested the engulfed cell. B. The host cell was able to survive anaerobic conditions with the engulfed cell alive. C. The engulfed cell provided the host cell with CO2 D. The engulfed cell provided the host cell with ATP. E. The engulfed cell allowed the host cell to metabolize glucose.arrow_forward
- You are discussing the choice of the “oil-eating” bacteria that you will use to clean the affected area from the oil spill and your team wants to know whether the Kalba sea constitutes a natural habitat for these bacteria. Formulate a hypothesis stating why or why not the Kalba sea area can be considered a natural habitat for such bacteria. Support your answer by discussing the role of evolution in contributing to the survival and thriving of “oil-eating” bacteria. Explain how and why these bacteria acquired these characteristicsarrow_forwardAs people use more of an antibiotic, the number of bacteria that are resistant to that antibiotic increase. Which statement describes a mechanism behind this trend? (A.) People’s bodies become more resistant to antibiotics after exposure to them (B.) Antibiotic molecules get weaker over time due to natural selection (C.) The antibiotic kills sensitive bacteria, and any bacteria resistant to it multiply to take their place (D.) Bacteria take up antibiotics and integrate them into their own DNAarrow_forwardThe beaches at a nearby lake have been closed because of high E. coli counts. The lake is surrounded by agricultural areas and summer cottages. We know that different species of vertebrates have different E. coli strains in their digestive tracts. Propose a hypothesis about the source of the E. coli and design an experiment to test this hypothesis.arrow_forward
- Use 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_forwardWhich of the following statements is NOT true regarding segmentation? a. Segmentation allows the evolution of redundant systems. b. Segmentation is a requirement for a closed circulatory system. c. Segmentation enhances locomotion. d. Segmentation represents an example of convergent evolutionarrow_forwardA cow is given an antibiotic to treat an infection in its digestive system. Antibiotics kill bacteria. Explain why it is necessary to also give the cow a drink of bacteria afterwards, in order for the cow to live.arrow_forward
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