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Antibiotics are chemical substances that kill or inhibit the growth of bacteria. The success of antibiotics against disease-causing bacteria is one of modern medicine’s great achievements. However, many bacteria harmful to humans have developed ways to circumvent the effects of antibiotics, and many infectious diseases are now much more difficult to treat than they were just a few decades ago. Antibiotic resistance is an especially difficult problem for hospitals with critically ill patients who are less able to fight off infections without the help of antibiotics.
Bacteria can develop antibiotic resistance because they have the ability to adapt quickly to new environmental conditions. Most commonly, bacteria share with each other genetic material called resistance plasmids; these shared plasmids, which contain the genetic code enabling antibiotic resistance, can spread throughout a bacterial population to create a strain of resistant bacteria. Less commonly, a natural mutation that enables antibiotic resistance takes place within the chromosome of the bacteria, and the resulting strain of bacteria can reproduce and become dominant via natural selection. In the absence of human involvement, however, bacteria in the wild rarely develop resistance to antibiotics.
In the United States, animals raised on industrial-scale factory farms are routinely administered low levels of antibiotics in their feed not as a cure for ongoing maladies, but primarily as a growth-enhancing agent to produce more meat and also as a prophylactic measure to compensate for overcrowded and unsanitary conditions.
Currently, several antibiotics that are used in human medical treatment are administered non-therapeutically to healthy livestock and poultry. Examples include tetracycline, penicillin and erythromycin. This long-term non-therapeutic feeding of antibiotics to animals creates the ideal conditions for the development of antibioticresistant bacteria, as it kills the susceptible bacteria while leaving the resistant strains to reproduce and flourish.
Europe is far ahead of the United States in the responsible use of antibiotics: On January 1, 2006, the European Union banned the feeding of all antibiotics to livestock for nontherapeutic purposes. This sweeping policy follows a 1998 ban on the non-therapeutic use of four medically-important antibiotics on animals. The time has come for the United States to follow Europe’s lead.
Q.
According to the passage, which of the following describes how bacteria can develop antibiotic resistance?
  • a)
    Radiation from medical devices such as x -ray machines weaken the immune system in both humans and animals.
  • b)
    Resistant strains developed through genetic engineering dominate a bacterial population through natural selection.
  • c)
    Medical practitioners over-prescribe antibiotics in hospitals which encourages bacteria to adapt and form resistant strains.
  • d)
    Genetic material containing the resistant trait is shared among a bacterial population.
  • e)
    Many antibiotics lose potency and become ineffective over time.
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Antibiotics are chemical substances that kill or inhibit the growth of...
The question asks for information specifically stated in the passage although in slightly different language. Paragraph two describes two methods by which bacteria can develop antibiotic resistance.
(A) The passage does not mention the effects of radiation on bacteria.
(B) The passage states that natural mutations can become dominant via natural selection. However, genetic engineering is not a “natural” process by which mutation occurs.
(C) While this may be true, the over-prescribing of antibiotics in hospitals is not a practice mentioned in the passage. Remember: the correct answer must be based “according to the passage….”
(D) CORRECT. In paragraph two, the passage specifically states that “bacteria share with each other genetic material called resistance plasmids … [which] … can reproduce and become dominant via natural selection.”
(E) The loss of potency and effectiveness of antibiotics over time is described as an effect of antibiotic resistance, not a cause or a method by which it is developed. 
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Antibiotics are chemical substances that kill or inhibit the growth of bacteria. The success of antibiotics against disease-causing bacteria is one of modern medicine’s great achievements. However, many bacteria harmful to humans have developed ways to circumvent the effects of antibiotics, and many infectious diseases are now much more difficult to treat than they were just a few decades ago. Antibiotic resistance is an especially difficult problem for hospitals with critically ill patients who are less able to fight off infections without the help of antibiotics.Bacteria can develop antibiotic resistance because they have the ability to adapt quickly to new environmental conditions. Most commonly, bacteria share with each other genetic material called resistance plasmids; these shared plasmids, which contain the genetic code enabling antibiotic resistance, can spread throughout a bacterial population to create a strain of resistant bacteria. Less commonly, a natural mutation that enables antibiotic resistance takes place within the chromosome of the bacteria, and the resulting strain of bacteria can reproduce and become dominant via natural selection. In the absence of human involvement, however, bacteria in the wild rarely develop resistance to antibiotics.In the United States, animals raised on industrial-scale factory farms are routinely administered low levels of antibiotics in their feed not as a cure for ongoing maladies, but primarily as a growth-enhancing agent to produce more meat and also as a prophylactic measure to compensate for overcrowded and unsanitary conditions.Currently, several antibiotics that are used in human medical treatment are administered non-therapeutically to healthy livestock and poultry. Examples include tetracycline, penicillin and erythromycin. This long-term non-therapeutic feeding of antibiotics to animals creates the ideal conditions for the development of antibioticresistant bacteria, as it kills the susceptible bacteria while leaving the resistant strains to reproduce and flourish.Europe is far ahead of the United States in the responsible use of antibiotics: On January 1, 2006, the European Union banned the feeding of all antibiotics to livestock for nontherapeutic purposes. This sweeping policy follows a 1998 ban on the non-therapeutic use of four medically-important antibiotics on animals. The time has come for the United States to follow Europe’s lead.Q.According to the passage, which of the following describes how bacteria can develop antibiotic resistance?a)Radiation from medical devices such as x -ray machines weaken the immune system in both humans and animals.b)Resistant strains developed through genetic engineering dominate a bacterial population through natural selection.c)Medical practitioners over-prescribe antibiotics in hospitals which encourages bacteria to adapt and form resistant strains.d)Genetic material containing the resistant trait is shared among a bacterial population.e)Many antibiotics lose potency and become ineffective over time.Correct answer is option 'D'. Can you explain this answer?
Question Description
Antibiotics are chemical substances that kill or inhibit the growth of bacteria. The success of antibiotics against disease-causing bacteria is one of modern medicine’s great achievements. However, many bacteria harmful to humans have developed ways to circumvent the effects of antibiotics, and many infectious diseases are now much more difficult to treat than they were just a few decades ago. Antibiotic resistance is an especially difficult problem for hospitals with critically ill patients who are less able to fight off infections without the help of antibiotics.Bacteria can develop antibiotic resistance because they have the ability to adapt quickly to new environmental conditions. Most commonly, bacteria share with each other genetic material called resistance plasmids; these shared plasmids, which contain the genetic code enabling antibiotic resistance, can spread throughout a bacterial population to create a strain of resistant bacteria. Less commonly, a natural mutation that enables antibiotic resistance takes place within the chromosome of the bacteria, and the resulting strain of bacteria can reproduce and become dominant via natural selection. In the absence of human involvement, however, bacteria in the wild rarely develop resistance to antibiotics.In the United States, animals raised on industrial-scale factory farms are routinely administered low levels of antibiotics in their feed not as a cure for ongoing maladies, but primarily as a growth-enhancing agent to produce more meat and also as a prophylactic measure to compensate for overcrowded and unsanitary conditions.Currently, several antibiotics that are used in human medical treatment are administered non-therapeutically to healthy livestock and poultry. Examples include tetracycline, penicillin and erythromycin. This long-term non-therapeutic feeding of antibiotics to animals creates the ideal conditions for the development of antibioticresistant bacteria, as it kills the susceptible bacteria while leaving the resistant strains to reproduce and flourish.Europe is far ahead of the United States in the responsible use of antibiotics: On January 1, 2006, the European Union banned the feeding of all antibiotics to livestock for nontherapeutic purposes. This sweeping policy follows a 1998 ban on the non-therapeutic use of four medically-important antibiotics on animals. The time has come for the United States to follow Europe’s lead.Q.According to the passage, which of the following describes how bacteria can develop antibiotic resistance?a)Radiation from medical devices such as x -ray machines weaken the immune system in both humans and animals.b)Resistant strains developed through genetic engineering dominate a bacterial population through natural selection.c)Medical practitioners over-prescribe antibiotics in hospitals which encourages bacteria to adapt and form resistant strains.d)Genetic material containing the resistant trait is shared among a bacterial population.e)Many antibiotics lose potency and become ineffective over time.Correct answer is option 'D'. Can you explain this answer? for GMAT 2024 is part of GMAT preparation. The Question and answers have been prepared according to the GMAT exam syllabus. Information about Antibiotics are chemical substances that kill or inhibit the growth of bacteria. The success of antibiotics against disease-causing bacteria is one of modern medicine’s great achievements. However, many bacteria harmful to humans have developed ways to circumvent the effects of antibiotics, and many infectious diseases are now much more difficult to treat than they were just a few decades ago. Antibiotic resistance is an especially difficult problem for hospitals with critically ill patients who are less able to fight off infections without the help of antibiotics.Bacteria can develop antibiotic resistance because they have the ability to adapt quickly to new environmental conditions. Most commonly, bacteria share with each other genetic material called resistance plasmids; these shared plasmids, which contain the genetic code enabling antibiotic resistance, can spread throughout a bacterial population to create a strain of resistant bacteria. Less commonly, a natural mutation that enables antibiotic resistance takes place within the chromosome of the bacteria, and the resulting strain of bacteria can reproduce and become dominant via natural selection. In the absence of human involvement, however, bacteria in the wild rarely develop resistance to antibiotics.In the United States, animals raised on industrial-scale factory farms are routinely administered low levels of antibiotics in their feed not as a cure for ongoing maladies, but primarily as a growth-enhancing agent to produce more meat and also as a prophylactic measure to compensate for overcrowded and unsanitary conditions.Currently, several antibiotics that are used in human medical treatment are administered non-therapeutically to healthy livestock and poultry. Examples include tetracycline, penicillin and erythromycin. This long-term non-therapeutic feeding of antibiotics to animals creates the ideal conditions for the development of antibioticresistant bacteria, as it kills the susceptible bacteria while leaving the resistant strains to reproduce and flourish.Europe is far ahead of the United States in the responsible use of antibiotics: On January 1, 2006, the European Union banned the feeding of all antibiotics to livestock for nontherapeutic purposes. This sweeping policy follows a 1998 ban on the non-therapeutic use of four medically-important antibiotics on animals. The time has come for the United States to follow Europe’s lead.Q.According to the passage, which of the following describes how bacteria can develop antibiotic resistance?a)Radiation from medical devices such as x -ray machines weaken the immune system in both humans and animals.b)Resistant strains developed through genetic engineering dominate a bacterial population through natural selection.c)Medical practitioners over-prescribe antibiotics in hospitals which encourages bacteria to adapt and form resistant strains.d)Genetic material containing the resistant trait is shared among a bacterial population.e)Many antibiotics lose potency and become ineffective over time.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for GMAT 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Antibiotics are chemical substances that kill or inhibit the growth of bacteria. The success of antibiotics against disease-causing bacteria is one of modern medicine’s great achievements. However, many bacteria harmful to humans have developed ways to circumvent the effects of antibiotics, and many infectious diseases are now much more difficult to treat than they were just a few decades ago. Antibiotic resistance is an especially difficult problem for hospitals with critically ill patients who are less able to fight off infections without the help of antibiotics.Bacteria can develop antibiotic resistance because they have the ability to adapt quickly to new environmental conditions. Most commonly, bacteria share with each other genetic material called resistance plasmids; these shared plasmids, which contain the genetic code enabling antibiotic resistance, can spread throughout a bacterial population to create a strain of resistant bacteria. Less commonly, a natural mutation that enables antibiotic resistance takes place within the chromosome of the bacteria, and the resulting strain of bacteria can reproduce and become dominant via natural selection. In the absence of human involvement, however, bacteria in the wild rarely develop resistance to antibiotics.In the United States, animals raised on industrial-scale factory farms are routinely administered low levels of antibiotics in their feed not as a cure for ongoing maladies, but primarily as a growth-enhancing agent to produce more meat and also as a prophylactic measure to compensate for overcrowded and unsanitary conditions.Currently, several antibiotics that are used in human medical treatment are administered non-therapeutically to healthy livestock and poultry. Examples include tetracycline, penicillin and erythromycin. This long-term non-therapeutic feeding of antibiotics to animals creates the ideal conditions for the development of antibioticresistant bacteria, as it kills the susceptible bacteria while leaving the resistant strains to reproduce and flourish.Europe is far ahead of the United States in the responsible use of antibiotics: On January 1, 2006, the European Union banned the feeding of all antibiotics to livestock for nontherapeutic purposes. This sweeping policy follows a 1998 ban on the non-therapeutic use of four medically-important antibiotics on animals. The time has come for the United States to follow Europe’s lead.Q.According to the passage, which of the following describes how bacteria can develop antibiotic resistance?a)Radiation from medical devices such as x -ray machines weaken the immune system in both humans and animals.b)Resistant strains developed through genetic engineering dominate a bacterial population through natural selection.c)Medical practitioners over-prescribe antibiotics in hospitals which encourages bacteria to adapt and form resistant strains.d)Genetic material containing the resistant trait is shared among a bacterial population.e)Many antibiotics lose potency and become ineffective over time.Correct answer is option 'D'. Can you explain this answer?.
Solutions for Antibiotics are chemical substances that kill or inhibit the growth of bacteria. The success of antibiotics against disease-causing bacteria is one of modern medicine’s great achievements. However, many bacteria harmful to humans have developed ways to circumvent the effects of antibiotics, and many infectious diseases are now much more difficult to treat than they were just a few decades ago. Antibiotic resistance is an especially difficult problem for hospitals with critically ill patients who are less able to fight off infections without the help of antibiotics.Bacteria can develop antibiotic resistance because they have the ability to adapt quickly to new environmental conditions. Most commonly, bacteria share with each other genetic material called resistance plasmids; these shared plasmids, which contain the genetic code enabling antibiotic resistance, can spread throughout a bacterial population to create a strain of resistant bacteria. Less commonly, a natural mutation that enables antibiotic resistance takes place within the chromosome of the bacteria, and the resulting strain of bacteria can reproduce and become dominant via natural selection. In the absence of human involvement, however, bacteria in the wild rarely develop resistance to antibiotics.In the United States, animals raised on industrial-scale factory farms are routinely administered low levels of antibiotics in their feed not as a cure for ongoing maladies, but primarily as a growth-enhancing agent to produce more meat and also as a prophylactic measure to compensate for overcrowded and unsanitary conditions.Currently, several antibiotics that are used in human medical treatment are administered non-therapeutically to healthy livestock and poultry. Examples include tetracycline, penicillin and erythromycin. This long-term non-therapeutic feeding of antibiotics to animals creates the ideal conditions for the development of antibioticresistant bacteria, as it kills the susceptible bacteria while leaving the resistant strains to reproduce and flourish.Europe is far ahead of the United States in the responsible use of antibiotics: On January 1, 2006, the European Union banned the feeding of all antibiotics to livestock for nontherapeutic purposes. This sweeping policy follows a 1998 ban on the non-therapeutic use of four medically-important antibiotics on animals. The time has come for the United States to follow Europe’s lead.Q.According to the passage, which of the following describes how bacteria can develop antibiotic resistance?a)Radiation from medical devices such as x -ray machines weaken the immune system in both humans and animals.b)Resistant strains developed through genetic engineering dominate a bacterial population through natural selection.c)Medical practitioners over-prescribe antibiotics in hospitals which encourages bacteria to adapt and form resistant strains.d)Genetic material containing the resistant trait is shared among a bacterial population.e)Many antibiotics lose potency and become ineffective over time.Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for GMAT. Download more important topics, notes, lectures and mock test series for GMAT Exam by signing up for free.
Here you can find the meaning of Antibiotics are chemical substances that kill or inhibit the growth of bacteria. The success of antibiotics against disease-causing bacteria is one of modern medicine’s great achievements. However, many bacteria harmful to humans have developed ways to circumvent the effects of antibiotics, and many infectious diseases are now much more difficult to treat than they were just a few decades ago. Antibiotic resistance is an especially difficult problem for hospitals with critically ill patients who are less able to fight off infections without the help of antibiotics.Bacteria can develop antibiotic resistance because they have the ability to adapt quickly to new environmental conditions. Most commonly, bacteria share with each other genetic material called resistance plasmids; these shared plasmids, which contain the genetic code enabling antibiotic resistance, can spread throughout a bacterial population to create a strain of resistant bacteria. Less commonly, a natural mutation that enables antibiotic resistance takes place within the chromosome of the bacteria, and the resulting strain of bacteria can reproduce and become dominant via natural selection. In the absence of human involvement, however, bacteria in the wild rarely develop resistance to antibiotics.In the United States, animals raised on industrial-scale factory farms are routinely administered low levels of antibiotics in their feed not as a cure for ongoing maladies, but primarily as a growth-enhancing agent to produce more meat and also as a prophylactic measure to compensate for overcrowded and unsanitary conditions.Currently, several antibiotics that are used in human medical treatment are administered non-therapeutically to healthy livestock and poultry. Examples include tetracycline, penicillin and erythromycin. This long-term non-therapeutic feeding of antibiotics to animals creates the ideal conditions for the development of antibioticresistant bacteria, as it kills the susceptible bacteria while leaving the resistant strains to reproduce and flourish.Europe is far ahead of the United States in the responsible use of antibiotics: On January 1, 2006, the European Union banned the feeding of all antibiotics to livestock for nontherapeutic purposes. This sweeping policy follows a 1998 ban on the non-therapeutic use of four medically-important antibiotics on animals. The time has come for the United States to follow Europe’s lead.Q.According to the passage, which of the following describes how bacteria can develop antibiotic resistance?a)Radiation from medical devices such as x -ray machines weaken the immune system in both humans and animals.b)Resistant strains developed through genetic engineering dominate a bacterial population through natural selection.c)Medical practitioners over-prescribe antibiotics in hospitals which encourages bacteria to adapt and form resistant strains.d)Genetic material containing the resistant trait is shared among a bacterial population.e)Many antibiotics lose potency and become ineffective over time.Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Antibiotics are chemical substances that kill or inhibit the growth of bacteria. The success of antibiotics against disease-causing bacteria is one of modern medicine’s great achievements. However, many bacteria harmful to humans have developed ways to circumvent the effects of antibiotics, and many infectious diseases are now much more difficult to treat than they were just a few decades ago. Antibiotic resistance is an especially difficult problem for hospitals with critically ill patients who are less able to fight off infections without the help of antibiotics.Bacteria can develop antibiotic resistance because they have the ability to adapt quickly to new environmental conditions. Most commonly, bacteria share with each other genetic material called resistance plasmids; these shared plasmids, which contain the genetic code enabling antibiotic resistance, can spread throughout a bacterial population to create a strain of resistant bacteria. Less commonly, a natural mutation that enables antibiotic resistance takes place within the chromosome of the bacteria, and the resulting strain of bacteria can reproduce and become dominant via natural selection. In the absence of human involvement, however, bacteria in the wild rarely develop resistance to antibiotics.In the United States, animals raised on industrial-scale factory farms are routinely administered low levels of antibiotics in their feed not as a cure for ongoing maladies, but primarily as a growth-enhancing agent to produce more meat and also as a prophylactic measure to compensate for overcrowded and unsanitary conditions.Currently, several antibiotics that are used in human medical treatment are administered non-therapeutically to healthy livestock and poultry. Examples include tetracycline, penicillin and erythromycin. This long-term non-therapeutic feeding of antibiotics to animals creates the ideal conditions for the development of antibioticresistant bacteria, as it kills the susceptible bacteria while leaving the resistant strains to reproduce and flourish.Europe is far ahead of the United States in the responsible use of antibiotics: On January 1, 2006, the European Union banned the feeding of all antibiotics to livestock for nontherapeutic purposes. This sweeping policy follows a 1998 ban on the non-therapeutic use of four medically-important antibiotics on animals. The time has come for the United States to follow Europe’s lead.Q.According to the passage, which of the following describes how bacteria can develop antibiotic resistance?a)Radiation from medical devices such as x -ray machines weaken the immune system in both humans and animals.b)Resistant strains developed through genetic engineering dominate a bacterial population through natural selection.c)Medical practitioners over-prescribe antibiotics in hospitals which encourages bacteria to adapt and form resistant strains.d)Genetic material containing the resistant trait is shared among a bacterial population.e)Many antibiotics lose potency and become ineffective over time.Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Antibiotics are chemical substances that kill or inhibit the growth of bacteria. The success of antibiotics against disease-causing bacteria is one of modern medicine’s great achievements. However, many bacteria harmful to humans have developed ways to circumvent the effects of antibiotics, and many infectious diseases are now much more difficult to treat than they were just a few decades ago. Antibiotic resistance is an especially difficult problem for hospitals with critically ill patients who are less able to fight off infections without the help of antibiotics.Bacteria can develop antibiotic resistance because they have the ability to adapt quickly to new environmental conditions. Most commonly, bacteria share with each other genetic material called resistance plasmids; these shared plasmids, which contain the genetic code enabling antibiotic resistance, can spread throughout a bacterial population to create a strain of resistant bacteria. Less commonly, a natural mutation that enables antibiotic resistance takes place within the chromosome of the bacteria, and the resulting strain of bacteria can reproduce and become dominant via natural selection. In the absence of human involvement, however, bacteria in the wild rarely develop resistance to antibiotics.In the United States, animals raised on industrial-scale factory farms are routinely administered low levels of antibiotics in their feed not as a cure for ongoing maladies, but primarily as a growth-enhancing agent to produce more meat and also as a prophylactic measure to compensate for overcrowded and unsanitary conditions.Currently, several antibiotics that are used in human medical treatment are administered non-therapeutically to healthy livestock and poultry. Examples include tetracycline, penicillin and erythromycin. This long-term non-therapeutic feeding of antibiotics to animals creates the ideal conditions for the development of antibioticresistant bacteria, as it kills the susceptible bacteria while leaving the resistant strains to reproduce and flourish.Europe is far ahead of the United States in the responsible use of antibiotics: On January 1, 2006, the European Union banned the feeding of all antibiotics to livestock for nontherapeutic purposes. This sweeping policy follows a 1998 ban on the non-therapeutic use of four medically-important antibiotics on animals. The time has come for the United States to follow Europe’s lead.Q.According to the passage, which of the following describes how bacteria can develop antibiotic resistance?a)Radiation from medical devices such as x -ray machines weaken the immune system in both humans and animals.b)Resistant strains developed through genetic engineering dominate a bacterial population through natural selection.c)Medical practitioners over-prescribe antibiotics in hospitals which encourages bacteria to adapt and form resistant strains.d)Genetic material containing the resistant trait is shared among a bacterial population.e)Many antibiotics lose potency and become ineffective over time.Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Antibiotics are chemical substances that kill or inhibit the growth of bacteria. The success of antibiotics against disease-causing bacteria is one of modern medicine’s great achievements. However, many bacteria harmful to humans have developed ways to circumvent the effects of antibiotics, and many infectious diseases are now much more difficult to treat than they were just a few decades ago. Antibiotic resistance is an especially difficult problem for hospitals with critically ill patients who are less able to fight off infections without the help of antibiotics.Bacteria can develop antibiotic resistance because they have the ability to adapt quickly to new environmental conditions. Most commonly, bacteria share with each other genetic material called resistance plasmids; these shared plasmids, which contain the genetic code enabling antibiotic resistance, can spread throughout a bacterial population to create a strain of resistant bacteria. Less commonly, a natural mutation that enables antibiotic resistance takes place within the chromosome of the bacteria, and the resulting strain of bacteria can reproduce and become dominant via natural selection. In the absence of human involvement, however, bacteria in the wild rarely develop resistance to antibiotics.In the United States, animals raised on industrial-scale factory farms are routinely administered low levels of antibiotics in their feed not as a cure for ongoing maladies, but primarily as a growth-enhancing agent to produce more meat and also as a prophylactic measure to compensate for overcrowded and unsanitary conditions.Currently, several antibiotics that are used in human medical treatment are administered non-therapeutically to healthy livestock and poultry. Examples include tetracycline, penicillin and erythromycin. This long-term non-therapeutic feeding of antibiotics to animals creates the ideal conditions for the development of antibioticresistant bacteria, as it kills the susceptible bacteria while leaving the resistant strains to reproduce and flourish.Europe is far ahead of the United States in the responsible use of antibiotics: On January 1, 2006, the European Union banned the feeding of all antibiotics to livestock for nontherapeutic purposes. This sweeping policy follows a 1998 ban on the non-therapeutic use of four medically-important antibiotics on animals. The time has come for the United States to follow Europe’s lead.Q.According to the passage, which of the following describes how bacteria can develop antibiotic resistance?a)Radiation from medical devices such as x -ray machines weaken the immune system in both humans and animals.b)Resistant strains developed through genetic engineering dominate a bacterial population through natural selection.c)Medical practitioners over-prescribe antibiotics in hospitals which encourages bacteria to adapt and form resistant strains.d)Genetic material containing the resistant trait is shared among a bacterial population.e)Many antibiotics lose potency and become ineffective over time.Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Antibiotics are chemical substances that kill or inhibit the growth of bacteria. The success of antibiotics against disease-causing bacteria is one of modern medicine’s great achievements. However, many bacteria harmful to humans have developed ways to circumvent the effects of antibiotics, and many infectious diseases are now much more difficult to treat than they were just a few decades ago. Antibiotic resistance is an especially difficult problem for hospitals with critically ill patients who are less able to fight off infections without the help of antibiotics.Bacteria can develop antibiotic resistance because they have the ability to adapt quickly to new environmental conditions. Most commonly, bacteria share with each other genetic material called resistance plasmids; these shared plasmids, which contain the genetic code enabling antibiotic resistance, can spread throughout a bacterial population to create a strain of resistant bacteria. Less commonly, a natural mutation that enables antibiotic resistance takes place within the chromosome of the bacteria, and the resulting strain of bacteria can reproduce and become dominant via natural selection. In the absence of human involvement, however, bacteria in the wild rarely develop resistance to antibiotics.In the United States, animals raised on industrial-scale factory farms are routinely administered low levels of antibiotics in their feed not as a cure for ongoing maladies, but primarily as a growth-enhancing agent to produce more meat and also as a prophylactic measure to compensate for overcrowded and unsanitary conditions.Currently, several antibiotics that are used in human medical treatment are administered non-therapeutically to healthy livestock and poultry. Examples include tetracycline, penicillin and erythromycin. This long-term non-therapeutic feeding of antibiotics to animals creates the ideal conditions for the development of antibioticresistant bacteria, as it kills the susceptible bacteria while leaving the resistant strains to reproduce and flourish.Europe is far ahead of the United States in the responsible use of antibiotics: On January 1, 2006, the European Union banned the feeding of all antibiotics to livestock for nontherapeutic purposes. This sweeping policy follows a 1998 ban on the non-therapeutic use of four medically-important antibiotics on animals. The time has come for the United States to follow Europe’s lead.Q.According to the passage, which of the following describes how bacteria can develop antibiotic resistance?a)Radiation from medical devices such as x -ray machines weaken the immune system in both humans and animals.b)Resistant strains developed through genetic engineering dominate a bacterial population through natural selection.c)Medical practitioners over-prescribe antibiotics in hospitals which encourages bacteria to adapt and form resistant strains.d)Genetic material containing the resistant trait is shared among a bacterial population.e)Many antibiotics lose potency and become ineffective over time.Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice GMAT tests.
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