Neurodegenerative diseases were once considered disorders of the mind that were deeply rooted in psychology. Now viruses rank among the environmental factors thought to trigger brain-ravaging diseases such as multiple sclerosis (MS) and Alzeimers disease. Human herpesvirus-6 (HHV-6), in particular, has been linked to MS in past studies. Neuroscientists have determined that the virus makes its entry to the human brain through the olfactory pathway, right along with the odors wafting into our nose. The researchers tested samples of brain cells from people with MS and healthy control subjects and found evidence of the virus in the olfactory bulb in both groups. Infection via the nasal passage is probably quite common, as is harboring a dormant reservoir of HHV-6, but in people with MS, the virus is active. The virus appears to invade the brain by infecting a type of glial cell called olfactory ensheathing cells (OECs), which nourish smell-sensing neurons and guide the virus from the olfactory bulb to their targets in the nervous system. These targets include the limbic system, a group of evolutionarily old structures deep in the brain, which is where viruses like to reactivate. The olfactory neurons and their OECs are among the few brain cells known to regenerate throughout our life. This neurogenesis may keep our sense of smell sharp, but at the cost of providing the virus the opportunity to spread.According to the passage, which of the following is true?a)The limbic system and the olfactory ensheating cells are one of the many target areas where viruses like to reactivate.b)The regeneration of the OECs is linked with the spread of the HHV-6 virus.c)The smell sensing neurons guide the HHV-6 virus to potential targets in the nervous system.d)An inactive reservoir of HHV-6 in the body is indicative of the persons lack of susceptibility to neurodegenerative diseases.e)Viruses like to flourish in deep, humidity ridden areas.Correct answer is option 'B'. Can you explain this answer?

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Neurodegenerative diseases were once considered disorders of the mind that were deeply rooted in psychology. Now viruses rank among the environmental factors thought to trigger brain-ravaging diseases such as multiple sclerosis (MS) and Alzeimer’s disease. Human herpesvirus-6 (HHV-6), in particular, has been linked to MS in past studies. Neuroscientists have determined that the virus makes its entry to the human brain through the olfactory pathway, right along with the odors wafting into our nose. The researchers tested samples of brain cells from people with MS and healthy control subjects and found evidence of the virus in the olfactory bulb in both groups. Infection via the nasal passage is probably quite common, as is harboring a dormant reservoir of HHV-6, but in people with MS, the virus is active. The virus appears to invade the brain by infecting a type of glial cell called olfactory ensheathing cells (OECs), which nourish smell-sensing neurons and guide the virus from the olfactory bulb to their targets in the nervous system. These targets include the limbic system, a group of evolutionarily old structures deep in the brain, which is where viruses like to reactivate. The olfactory neurons and their OECs are among the few brain cells known to regenerate throughout our life. This neurogenesis may keep our sense of smell sharp, but at the cost of providing the virus the opportunity to spread.

According to the passage, which of the following is true?

a)
The limbic system and the olfactory ensheating cells are one of the many target areas where viruses like to reactivate.
b)
The regeneration of the OECs is linked with the spread of the HHV-6 virus.
c)
The smell sensing neurons guide the HHV-6 virus to potential targets in the nervous system.
d)
An inactive reservoir of HHV-6 in the body is indicative of the person’s lack of susceptibility to neurodegenerative diseases.
e)
Viruses like to flourish in deep, humidity ridden areas.

Correct answer is option 'B'. Can you explain this answer?

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Neurodegenerative diseases were once considered disorders of the mind ...

Passage Analysis

Summary and Main Point

Pre-Thinking

This is a Detail question. Keep crossing out answer choices that are not explicitly stated in the passage and choose the one for which you can directly refer to a portion in the passage.

Answer Choices

The limbic system and the olfactory ensheating cells are one of the many target areas where viruses like to reactivate.

Incorrect: Inconsistent

The passage clearly states that the OECs guide the virus to their targets and one such target is the limbic system, where viruses like to reactivate. Therefore, the OECs themselves cannot be the targets.

The regeneration of the OECs is linked with the spread of the HHV-6 virus.

Correct

This piece of information is given in the last two sentences of the passage. The author states the neurogenesis provides the virus the opportunity to spread.

The smell sensing neurons guide the HHV-6 virus to potential targets in the nervous system.

Incorrect: Out of Scope

As stated in the explanation of the first choice, the OECs guide the virus to targets in the nervous system. There is no information given regarding a similar role of the smell sensing neurons.

An inactive reservoir of HHV-6 in the body is indicative of the person’s lack of susceptibility to neurodegenerative diseases.

Incorrect: Out of Scope

The author states that in healthy people the virus, though present, is inactive. Nothing is given regarding their likelihood of developing any kind of neurodegenerative disease.

Viruses like to flourish in deep, humidity ridden areas.

Incorrect: Out of Scope

This information is completely out of scope and not given in the passage.

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Neurodegenerative diseases were once considered disorders of the mind that were deeply rooted in psychology. Now viruses rank among the environmental factors thought to trigger brain-ravaging diseases such as multiple sclerosis (MS) and Alzeimers disease. Human herpesvirus-6 (HHV-6), in particular, has been linked to MS in past studies. Neuroscientists have determined that the virus makes its entry to the human brain through the olfactory pathway, right along with the odors wafting into our nose. The researchers tested samples of brain cells from people with MS and healthy control subjects and found evidence of the virus in the olfactory bulb in both groups. Infection via the nasal passage is probably quite common, as is harboring a dormant reservoir of HHV-6, but in people with MS, the virus is active. The virus appears to invade the brain by infecting a type of glial cell called olfactory ensheathing cells (OECs), which nourish smell-sensing neurons and guide the virus from the olfactory bulb to their targets in the nervous system. These targets include the limbic system, a group of evolutionarily old structures deep in the brain, which is where viruses like to reactivate. The olfactory neurons and their OECs are among the few brain cells known to regenerate throughout our life. This neurogenesis may keep our sense of smell sharp, but at the cost of providing the virus the opportunity to spread.Which of the following can be inferred from the passage?

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Neurodegenerative diseases were once considered disorders of the mind that were deeply rooted in psychology. Now viruses rank among the environmental factors thought to trigger brain-ravaging diseases such as multiple sclerosis (MS) and Alzeimer’s disease. Human herpesvirus-6 (HHV-6), in particular, has been linked to MS in past studies. Neuroscientists have determined that the virus makes its entry to the human brain through the olfactory pathway, right along with the odors wafting into our nose. The researchers tested samples of brain cells from people with MS and healthy control subjects and found evidence of the virus in the olfactory bulb in both groups. Infection via the nasal passage is probably quite common, as is harboring a dormant reservoir of HHV-6, but in people with MS, the virus is active. The virus appears to invade the brain by infecting a type of glial cell called olfactory ensheathing cells (OECs), which nourish smell-sensing neurons and guide the virus from the olfactory bulb to their targets in the nervous system. These targets include the limbic system, a group of evolutionarily old structures deep in the brain, which is where viruses like to reactivate. The olfactory neurons and their OECs are among the few brain cells known to regenerate throughout our life. This neurogenesis may keep our sense of smell sharp, but at the cost of providing the virus the opportunity to spread.According to the passage, which of the following is true?a)The limbic system and the olfactory ensheating cells are one of the many target areas where viruses like to reactivate.b)The regeneration of the OECs is linked with the spread of the HHV-6 virus.c)The smell sensing neurons guide the HHV-6 virus to potential targets in the nervous system.d)An inactive reservoir of HHV-6 in the body is indicative of the person’s lack of susceptibility to neurodegenerative diseases.e)Viruses like to flourish in deep, humidity ridden areas.Correct answer is option 'B'. 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 Neurodegenerative diseases were once considered disorders of the mind that were deeply rooted in psychology. Now viruses rank among the environmental factors thought to trigger brain-ravaging diseases such as multiple sclerosis (MS) and Alzeimer’s disease. Human herpesvirus-6 (HHV-6), in particular, has been linked to MS in past studies. Neuroscientists have determined that the virus makes its entry to the human brain through the olfactory pathway, right along with the odors wafting into our nose. The researchers tested samples of brain cells from people with MS and healthy control subjects and found evidence of the virus in the olfactory bulb in both groups. Infection via the nasal passage is probably quite common, as is harboring a dormant reservoir of HHV-6, but in people with MS, the virus is active. The virus appears to invade the brain by infecting a type of glial cell called olfactory ensheathing cells (OECs), which nourish smell-sensing neurons and guide the virus from the olfactory bulb to their targets in the nervous system. These targets include the limbic system, a group of evolutionarily old structures deep in the brain, which is where viruses like to reactivate. The olfactory neurons and their OECs are among the few brain cells known to regenerate throughout our life. This neurogenesis may keep our sense of smell sharp, but at the cost of providing the virus the opportunity to spread.According to the passage, which of the following is true?a)The limbic system and the olfactory ensheating cells are one of the many target areas where viruses like to reactivate.b)The regeneration of the OECs is linked with the spread of the HHV-6 virus.c)The smell sensing neurons guide the HHV-6 virus to potential targets in the nervous system.d)An inactive reservoir of HHV-6 in the body is indicative of the person’s lack of susceptibility to neurodegenerative diseases.e)Viruses like to flourish in deep, humidity ridden areas.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for GMAT 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Neurodegenerative diseases were once considered disorders of the mind that were deeply rooted in psychology. Now viruses rank among the environmental factors thought to trigger brain-ravaging diseases such as multiple sclerosis (MS) and Alzeimer’s disease. Human herpesvirus-6 (HHV-6), in particular, has been linked to MS in past studies. Neuroscientists have determined that the virus makes its entry to the human brain through the olfactory pathway, right along with the odors wafting into our nose. The researchers tested samples of brain cells from people with MS and healthy control subjects and found evidence of the virus in the olfactory bulb in both groups. Infection via the nasal passage is probably quite common, as is harboring a dormant reservoir of HHV-6, but in people with MS, the virus is active. The virus appears to invade the brain by infecting a type of glial cell called olfactory ensheathing cells (OECs), which nourish smell-sensing neurons and guide the virus from the olfactory bulb to their targets in the nervous system. These targets include the limbic system, a group of evolutionarily old structures deep in the brain, which is where viruses like to reactivate. The olfactory neurons and their OECs are among the few brain cells known to regenerate throughout our life. This neurogenesis may keep our sense of smell sharp, but at the cost of providing the virus the opportunity to spread.According to the passage, which of the following is true?a)The limbic system and the olfactory ensheating cells are one of the many target areas where viruses like to reactivate.b)The regeneration of the OECs is linked with the spread of the HHV-6 virus.c)The smell sensing neurons guide the HHV-6 virus to potential targets in the nervous system.d)An inactive reservoir of HHV-6 in the body is indicative of the person’s lack of susceptibility to neurodegenerative diseases.e)Viruses like to flourish in deep, humidity ridden areas.Correct answer is option 'B'. Can you explain this answer?.

Solutions for Neurodegenerative diseases were once considered disorders of the mind that were deeply rooted in psychology. Now viruses rank among the environmental factors thought to trigger brain-ravaging diseases such as multiple sclerosis (MS) and Alzeimer’s disease. Human herpesvirus-6 (HHV-6), in particular, has been linked to MS in past studies. Neuroscientists have determined that the virus makes its entry to the human brain through the olfactory pathway, right along with the odors wafting into our nose. The researchers tested samples of brain cells from people with MS and healthy control subjects and found evidence of the virus in the olfactory bulb in both groups. Infection via the nasal passage is probably quite common, as is harboring a dormant reservoir of HHV-6, but in people with MS, the virus is active. The virus appears to invade the brain by infecting a type of glial cell called olfactory ensheathing cells (OECs), which nourish smell-sensing neurons and guide the virus from the olfactory bulb to their targets in the nervous system. These targets include the limbic system, a group of evolutionarily old structures deep in the brain, which is where viruses like to reactivate. The olfactory neurons and their OECs are among the few brain cells known to regenerate throughout our life. This neurogenesis may keep our sense of smell sharp, but at the cost of providing the virus the opportunity to spread.According to the passage, which of the following is true?a)The limbic system and the olfactory ensheating cells are one of the many target areas where viruses like to reactivate.b)The regeneration of the OECs is linked with the spread of the HHV-6 virus.c)The smell sensing neurons guide the HHV-6 virus to potential targets in the nervous system.d)An inactive reservoir of HHV-6 in the body is indicative of the person’s lack of susceptibility to neurodegenerative diseases.e)Viruses like to flourish in deep, humidity ridden areas.Correct answer is option 'B'. 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 Neurodegenerative diseases were once considered disorders of the mind that were deeply rooted in psychology. Now viruses rank among the environmental factors thought to trigger brain-ravaging diseases such as multiple sclerosis (MS) and Alzeimer’s disease. Human herpesvirus-6 (HHV-6), in particular, has been linked to MS in past studies. Neuroscientists have determined that the virus makes its entry to the human brain through the olfactory pathway, right along with the odors wafting into our nose. The researchers tested samples of brain cells from people with MS and healthy control subjects and found evidence of the virus in the olfactory bulb in both groups. Infection via the nasal passage is probably quite common, as is harboring a dormant reservoir of HHV-6, but in people with MS, the virus is active. The virus appears to invade the brain by infecting a type of glial cell called olfactory ensheathing cells (OECs), which nourish smell-sensing neurons and guide the virus from the olfactory bulb to their targets in the nervous system. These targets include the limbic system, a group of evolutionarily old structures deep in the brain, which is where viruses like to reactivate. The olfactory neurons and their OECs are among the few brain cells known to regenerate throughout our life. This neurogenesis may keep our sense of smell sharp, but at the cost of providing the virus the opportunity to spread.According to the passage, which of the following is true?a)The limbic system and the olfactory ensheating cells are one of the many target areas where viruses like to reactivate.b)The regeneration of the OECs is linked with the spread of the HHV-6 virus.c)The smell sensing neurons guide the HHV-6 virus to potential targets in the nervous system.d)An inactive reservoir of HHV-6 in the body is indicative of the person’s lack of susceptibility to neurodegenerative diseases.e)Viruses like to flourish in deep, humidity ridden areas.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Neurodegenerative diseases were once considered disorders of the mind that were deeply rooted in psychology. Now viruses rank among the environmental factors thought to trigger brain-ravaging diseases such as multiple sclerosis (MS) and Alzeimer’s disease. Human herpesvirus-6 (HHV-6), in particular, has been linked to MS in past studies. Neuroscientists have determined that the virus makes its entry to the human brain through the olfactory pathway, right along with the odors wafting into our nose. The researchers tested samples of brain cells from people with MS and healthy control subjects and found evidence of the virus in the olfactory bulb in both groups. Infection via the nasal passage is probably quite common, as is harboring a dormant reservoir of HHV-6, but in people with MS, the virus is active. The virus appears to invade the brain by infecting a type of glial cell called olfactory ensheathing cells (OECs), which nourish smell-sensing neurons and guide the virus from the olfactory bulb to their targets in the nervous system. These targets include the limbic system, a group of evolutionarily old structures deep in the brain, which is where viruses like to reactivate. The olfactory neurons and their OECs are among the few brain cells known to regenerate throughout our life. This neurogenesis may keep our sense of smell sharp, but at the cost of providing the virus the opportunity to spread.According to the passage, which of the following is true?a)The limbic system and the olfactory ensheating cells are one of the many target areas where viruses like to reactivate.b)The regeneration of the OECs is linked with the spread of the HHV-6 virus.c)The smell sensing neurons guide the HHV-6 virus to potential targets in the nervous system.d)An inactive reservoir of HHV-6 in the body is indicative of the person’s lack of susceptibility to neurodegenerative diseases.e)Viruses like to flourish in deep, humidity ridden areas.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Neurodegenerative diseases were once considered disorders of the mind that were deeply rooted in psychology. Now viruses rank among the environmental factors thought to trigger brain-ravaging diseases such as multiple sclerosis (MS) and Alzeimer’s disease. Human herpesvirus-6 (HHV-6), in particular, has been linked to MS in past studies. Neuroscientists have determined that the virus makes its entry to the human brain through the olfactory pathway, right along with the odors wafting into our nose. The researchers tested samples of brain cells from people with MS and healthy control subjects and found evidence of the virus in the olfactory bulb in both groups. Infection via the nasal passage is probably quite common, as is harboring a dormant reservoir of HHV-6, but in people with MS, the virus is active. The virus appears to invade the brain by infecting a type of glial cell called olfactory ensheathing cells (OECs), which nourish smell-sensing neurons and guide the virus from the olfactory bulb to their targets in the nervous system. These targets include the limbic system, a group of evolutionarily old structures deep in the brain, which is where viruses like to reactivate. The olfactory neurons and their OECs are among the few brain cells known to regenerate throughout our life. This neurogenesis may keep our sense of smell sharp, but at the cost of providing the virus the opportunity to spread.According to the passage, which of the following is true?a)The limbic system and the olfactory ensheating cells are one of the many target areas where viruses like to reactivate.b)The regeneration of the OECs is linked with the spread of the HHV-6 virus.c)The smell sensing neurons guide the HHV-6 virus to potential targets in the nervous system.d)An inactive reservoir of HHV-6 in the body is indicative of the person’s lack of susceptibility to neurodegenerative diseases.e)Viruses like to flourish in deep, humidity ridden areas.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Neurodegenerative diseases were once considered disorders of the mind that were deeply rooted in psychology. Now viruses rank among the environmental factors thought to trigger brain-ravaging diseases such as multiple sclerosis (MS) and Alzeimer’s disease. Human herpesvirus-6 (HHV-6), in particular, has been linked to MS in past studies. Neuroscientists have determined that the virus makes its entry to the human brain through the olfactory pathway, right along with the odors wafting into our nose. The researchers tested samples of brain cells from people with MS and healthy control subjects and found evidence of the virus in the olfactory bulb in both groups. Infection via the nasal passage is probably quite common, as is harboring a dormant reservoir of HHV-6, but in people with MS, the virus is active. The virus appears to invade the brain by infecting a type of glial cell called olfactory ensheathing cells (OECs), which nourish smell-sensing neurons and guide the virus from the olfactory bulb to their targets in the nervous system. These targets include the limbic system, a group of evolutionarily old structures deep in the brain, which is where viruses like to reactivate. The olfactory neurons and their OECs are among the few brain cells known to regenerate throughout our life. This neurogenesis may keep our sense of smell sharp, but at the cost of providing the virus the opportunity to spread.According to the passage, which of the following is true?a)The limbic system and the olfactory ensheating cells are one of the many target areas where viruses like to reactivate.b)The regeneration of the OECs is linked with the spread of the HHV-6 virus.c)The smell sensing neurons guide the HHV-6 virus to potential targets in the nervous system.d)An inactive reservoir of HHV-6 in the body is indicative of the person’s lack of susceptibility to neurodegenerative diseases.e)Viruses like to flourish in deep, humidity ridden areas.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Neurodegenerative diseases were once considered disorders of the mind that were deeply rooted in psychology. Now viruses rank among the environmental factors thought to trigger brain-ravaging diseases such as multiple sclerosis (MS) and Alzeimer’s disease. Human herpesvirus-6 (HHV-6), in particular, has been linked to MS in past studies. Neuroscientists have determined that the virus makes its entry to the human brain through the olfactory pathway, right along with the odors wafting into our nose. The researchers tested samples of brain cells from people with MS and healthy control subjects and found evidence of the virus in the olfactory bulb in both groups. Infection via the nasal passage is probably quite common, as is harboring a dormant reservoir of HHV-6, but in people with MS, the virus is active. The virus appears to invade the brain by infecting a type of glial cell called olfactory ensheathing cells (OECs), which nourish smell-sensing neurons and guide the virus from the olfactory bulb to their targets in the nervous system. These targets include the limbic system, a group of evolutionarily old structures deep in the brain, which is where viruses like to reactivate. The olfactory neurons and their OECs are among the few brain cells known to regenerate throughout our life. This neurogenesis may keep our sense of smell sharp, but at the cost of providing the virus the opportunity to spread.According to the passage, which of the following is true?a)The limbic system and the olfactory ensheating cells are one of the many target areas where viruses like to reactivate.b)The regeneration of the OECs is linked with the spread of the HHV-6 virus.c)The smell sensing neurons guide the HHV-6 virus to potential targets in the nervous system.d)An inactive reservoir of HHV-6 in the body is indicative of the person’s lack of susceptibility to neurodegenerative diseases.e)Viruses like to flourish in deep, humidity ridden areas.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice GMAT tests.

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