WHAT IS LIFE LL WITH 1 TERM ACCESS
5th Edition
ISBN: 9781319438920
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 10, Problem 10MC
Summary Introduction
Introduction:
Evolution is a constantly occurring process that can be observed in many cases. Organisms evolve to adapt to their surroundings.
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Scenario C: Your Uncle raises beef cattle and is considering adding low amounts of antibiotics to their
feed because he heard it makes them grow larger. Explain to him:
The concept of using antibiotics for "essential use only."
The process of natural selection. How low levels of antibiotics select for resistant bacteria.
How these antibiotic resistant bacteria can then be harmful to not only cows, but also humans.
Probiotic bacteria in the human large intestine (also known as “the colon”):
a. have an optimal population growth rate (population doubling time)
b. digest food materials, such as dietary fiber (cellulose) that the human digestive system cannot digest
c. produce substances that inhibit the growth of detrimental bacteria
d. include the lactic acid bacteria Lactobacillus acidophilus and Bifidobacterium bifidum
e. produce anti-inflammatory compounds such as short-chain fatty acids
Evolutionary changes of antibiotic resistant bacteria increase the ability of a species to survive and reproduce under any circumstances (True or false) give explaination for answer?
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WHAT IS LIFE LL WITH 1 TERM ACCESS
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In 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 of the following statements correctly describes a process by which bacteria become resistant to antibiotics? A. bacteria reproduce slowly, allowing mutation to become widespread in a population. B. some bacteria produce exotoxins that breakdown antibiotics, rendering them nonfunctional C. conjugation spreads antibiotic resistance genes rapidly in a population D. antibiotics cause mutation in bacteria, making them resistant.arrow_forwardExplain 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_forward
- describe the modern theory of evoluton and discuss how it is supported by evidence from two of the following three areas a.population genetics b.molecular biology c.comparative anatomy and embryology evolution is one of the major unifying concepts of modern biology.explain the mechanism that lead to evolutionary change.describe how scientists use each of the following as evidence fornevolution a.bacterial resistance to antibiotics b.comparative biochemistry c.the fossil recordsarrow_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 characteristics.arrow_forwardThe bacterium Agrobacterium infects plants and causes plant cells to develop tumorlike cellular structures and begin synthesizing sets of proteins that protect the bacterium from the plant immune response, as well as synthesize nutrients that can be used exclusively by the bacterium. Researchers testing the efficacy of two new antibiotic treatments against Agrobacterium are tasked with designing an experiment to test their effectiveness. Which of the following describes the most appropriate control group in this experiment? A B с D a group of infected and untreated plants of the same species a group of uninfected and untreated plants of a different species a group of infected and untreated plants of a different species a group of uninfected and untreated plants of the same speciesarrow_forward
- Plants cannot fix nitrogen, yet some plants do NOT need nitrogen from the soil. This is because a. of a symbiotic association with a bacterium that can fix nitrogen. b. these plants are the exceptions that can fix nitrogen. c. they have been infected by a parasitic virus that can fix nitrogen. d. they are able to obtain nitrogen from the air.arrow_forwardWhich of these statements about the virulence of rabbit myxoma virus is TRUE?A. Rabbit myxoma virus needed to become less virulent so it could coexist with its rabbit hosts.B. Directional selection favored a coevolutionary escalation where resistance evolved in rabbits and less virulence evolved in the virus.C. Rabbit myxoma virus became less virulent over time because natural selection favored strains that did not immediately kill the rabbit hosts, enhancing the likelihood of spreading and infecting other rabbits.D. None of the above is a true statement.arrow_forwardMutations cause variations among individuals. If these variations provide an advantage to individuals, then the resulting traits are known as adaptations. Which of the following statements about adaptations is incorrect? A. They are structural or physiological in nature. B. They modify the behaviour of organisms. C. They provide a selective advantage in any environment. D .They increase reproductive success of organisms.arrow_forward
- Humans are not autotrophic, this means we a. cannot manufacture our own nutrients. b. require calorie dense foods. c. produce our own body heat. d. produce salty body fluids. Morbidity refers to a. the number of cases of disease per unit of population occurring over a unit of time. b. the first occurrence of menstruation. c. the number of deaths attributable to a particular per unit of population over a unit of time. d. the statistical likelihood of a person dying from a particular cause.arrow_forwardThe bacterium Agrobacterium infects plants and causes plant cells to develop tumorlike cellular structures and begin synthesizing sets of proteins that protect the bacterium from the plant immune response, as well as synthesize nutrients that can be used exclusively by the bacterium. Researchers testing the efficacy of two new antibiotic treatments against Agrobacterium are tasked with designing an experiment to test their effectiveness. Which of the following describes the most appropriate dependent variable in this experiment? A B с D the rate of infection the amount of treatment the number of formed tumors the rate of plant growtharrow_forwardThe spread of antibiotic resistance genes is an example of evolution. Explain how this is evolution using the framework of natural selection. Make sure you include what genes are evolving and what is the selective agent or selective pressure.arrow_forward
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