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Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.
Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.
Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.
The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.
The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.
Q.
Which of the following most accurately describes the primary purpose of the passage?
  • a)
    To advocate a wider use for the biological detection mechanisms of dogs and other mammals.
  • b)
    To describe possible disadvantages involved in the use of dogs’ biological detection mechanisms.
  • c)
    To describe biological detection mechanisms of insects and suggest that they may provide a viable alternative to those of mammals.
  • d)
    To discuss the process used by insects to detect odors.
  • e)
    To discuss the methods used by biologists to explore insects’ olfactory organs.
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Dogs are widely employed by the police as biological detection systems...
On questions asking about the main idea of the passage, be sure to refer to the opening paragraph, which usually discusses the main theme of the passage. Also, when selecting your answer, avoid extreme answer choices that describe only a part of the passage or mention information that is beyond the scope of the text. 
(A) This answer choice is directly contradicted by the text. The passage provides an argument for a wider use of the detection mechanisms of insects rather than dogs.
(B) While possible disadvantages involved in using detection mechanisms of dogs are mentioned in the second paragraph, their discussion appears only in one paragraph and thus does not reflect the main idea of the passage.
(C) CORRECT. This answer choice accurately describes the main idea of the passage. Note that this idea permeates the entire passage and conveys the main intention of the author. Also, note that this theme is mimicked in the opening paragraph of the passage: “… recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity.”
(D) While the second paragraph of the passage is devoted to the discussion of the biological process used by insects to detect odors, this theme is discussed only in one paragraph and fails to reflect the content of the entire passage.
(E) First, the passage mentions only one method (rather than multiple methods): the technique developed by Dietrich Schneider. Secondly, this method is mentioned only in the concluding paragraph of the passage and does not reflect the main theme of the entire text.  
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Most Upvoted Answer
Dogs are widely employed by the police as biological detection systems...
Primary Purpose of the Passage:

Description of Insects' Biological Detection Mechanisms:
- The passage describes how insects possess effective biological detection mechanisms similar to mammals.
- It explains the olfactory system of insects and how they detect odors through their antenna's sensilla.

Suggestion of Insects as a Viable Alternative:
- The passage suggests that insects may provide a more effective alternative to mammals, such as dogs, in biological detection systems.
- It highlights the advantages of using insects, such as their lack of emotional attachments and effective detection mechanisms.

Discussion of Future Application of Insect Detection Mechanisms:
- The passage discusses recent developments in the study of insect olfactory systems, indicating a potential practical application in the near future.
- It mentions the technique developed by biologist Dietrich Schneider in the 1950s as a significant step in understanding insect detection mechanisms.
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Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.It can be inferred from the passage that dogs could be used more effectively in detecting drugs if which of the following were true?

Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.Which of the following statements can be most reasonably inferred from the passage above?

Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.According to the passage, which of the following roles is played by an odorant binding protein?

Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.Which of the following best describes the author’s attitude towards the prospects of using insects’ biological detection systems in practice?

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Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.Which of the following most accurately describes the primary purpose of the passage?a)To advocate a wider use for the biological detection mechanisms of dogs and other mammals.b)To describe possible disadvantages involved in the use of dogs’ biological detection mechanisms.c)To describe biological detection mechanisms of insects and suggest that they may provide a viable alternative to those of mammals.d)To discuss the process used by insects to detect odors.e)To discuss the methods used by biologists to explore insects’ olfactory organs.Correct answer is option 'C'. Can you explain this answer?
Question Description
Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.Which of the following most accurately describes the primary purpose of the passage?a)To advocate a wider use for the biological detection mechanisms of dogs and other mammals.b)To describe possible disadvantages involved in the use of dogs’ biological detection mechanisms.c)To describe biological detection mechanisms of insects and suggest that they may provide a viable alternative to those of mammals.d)To discuss the process used by insects to detect odors.e)To discuss the methods used by biologists to explore insects’ olfactory organs.Correct answer is option 'C'. 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 Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.Which of the following most accurately describes the primary purpose of the passage?a)To advocate a wider use for the biological detection mechanisms of dogs and other mammals.b)To describe possible disadvantages involved in the use of dogs’ biological detection mechanisms.c)To describe biological detection mechanisms of insects and suggest that they may provide a viable alternative to those of mammals.d)To discuss the process used by insects to detect odors.e)To discuss the methods used by biologists to explore insects’ olfactory organs.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for GMAT 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.Which of the following most accurately describes the primary purpose of the passage?a)To advocate a wider use for the biological detection mechanisms of dogs and other mammals.b)To describe possible disadvantages involved in the use of dogs’ biological detection mechanisms.c)To describe biological detection mechanisms of insects and suggest that they may provide a viable alternative to those of mammals.d)To discuss the process used by insects to detect odors.e)To discuss the methods used by biologists to explore insects’ olfactory organs.Correct answer is option 'C'. Can you explain this answer?.
Solutions for Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.Which of the following most accurately describes the primary purpose of the passage?a)To advocate a wider use for the biological detection mechanisms of dogs and other mammals.b)To describe possible disadvantages involved in the use of dogs’ biological detection mechanisms.c)To describe biological detection mechanisms of insects and suggest that they may provide a viable alternative to those of mammals.d)To discuss the process used by insects to detect odors.e)To discuss the methods used by biologists to explore insects’ olfactory organs.Correct answer is option 'C'. 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 Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.Which of the following most accurately describes the primary purpose of the passage?a)To advocate a wider use for the biological detection mechanisms of dogs and other mammals.b)To describe possible disadvantages involved in the use of dogs’ biological detection mechanisms.c)To describe biological detection mechanisms of insects and suggest that they may provide a viable alternative to those of mammals.d)To discuss the process used by insects to detect odors.e)To discuss the methods used by biologists to explore insects’ olfactory organs.Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.Which of the following most accurately describes the primary purpose of the passage?a)To advocate a wider use for the biological detection mechanisms of dogs and other mammals.b)To describe possible disadvantages involved in the use of dogs’ biological detection mechanisms.c)To describe biological detection mechanisms of insects and suggest that they may provide a viable alternative to those of mammals.d)To discuss the process used by insects to detect odors.e)To discuss the methods used by biologists to explore insects’ olfactory organs.Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.Which of the following most accurately describes the primary purpose of the passage?a)To advocate a wider use for the biological detection mechanisms of dogs and other mammals.b)To describe possible disadvantages involved in the use of dogs’ biological detection mechanisms.c)To describe biological detection mechanisms of insects and suggest that they may provide a viable alternative to those of mammals.d)To discuss the process used by insects to detect odors.e)To discuss the methods used by biologists to explore insects’ olfactory organs.Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.Which of the following most accurately describes the primary purpose of the passage?a)To advocate a wider use for the biological detection mechanisms of dogs and other mammals.b)To describe possible disadvantages involved in the use of dogs’ biological detection mechanisms.c)To describe biological detection mechanisms of insects and suggest that they may provide a viable alternative to those of mammals.d)To discuss the process used by insects to detect odors.e)To discuss the methods used by biologists to explore insects’ olfactory organs.Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Dogs are widely employed by the police as biological detection systems to detect the smuggling and storage of drugs. Yet, recent evidence suggests that insects, rather than mammals, may be used more effectively in this capacity. One of the disadvantages of dogs lies in the fact that these animals, like humans, may get bored and lose interest. Other problems may also result from the emotional relationship between a dog and its owner.Insects, on the other hand, remain relatively free of these emotional attachments and, at the same time, possess biological detection mechanisms that are at least as effective as those of mammals.Insects have olfactory systems that are very similar to those of vertebrates, detecting odors via finger-like protuberances on the antenna, called olfactory sensilla.The odorant molecule passes through pores in the outer cuticle of the sensillum and becomes attached to an odorant binding protein. This protein carries the hydrophobic ligand through the lymph fluid found inside the cell and attaches it to a receptor on the dendritic projections of a sensory nerve cell. Finally, this receptor sends a signal to the central nervous system, allowing for easy detection by researchers.The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. A technique developed by German biologist Dietrich Schneider in the 1950s became the first method that enabled researchers to record the activity in insect olfactory nerves and identify the compounds that trigger a behavioral response. The recent developments in this direction suggest that the detection mechanisms of insects are likely to be applied in practice in the near future.Q.Which of the following most accurately describes the primary purpose of the passage?a)To advocate a wider use for the biological detection mechanisms of dogs and other mammals.b)To describe possible disadvantages involved in the use of dogs’ biological detection mechanisms.c)To describe biological detection mechanisms of insects and suggest that they may provide a viable alternative to those of mammals.d)To discuss the process used by insects to detect odors.e)To discuss the methods used by biologists to explore insects’ olfactory organs.Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice GMAT tests.
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