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07 Jan 2024, 16:02
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Dr. Helen Purdy Beale, a pioneering virologist, made a groundbreaking discovery about the Tobacco Mosaic Virus (TMV). TMV, known for causing disease in tobacco plants, forms distinctive patterns of mottling and discoloration on the leaves. Dr. Beale's work, initially met with skepticism, has been validated by later research and significantly advanced our understanding of viral structures and plant pathology.
Dr. Beale observed that TMV particles form helical structures, a feature not widely accepted or understood at the time. Her studies revealed that these helical structures are critical for the virus's ability to infect and replicate within plant cells. She postulated that the helical form allows the virus to interact more effectively with the host cell's mechanisms, facilitating the spread of the infection through the plant's vascular system.
Most notably, Dr. Beale suggested that the helical structure of TMV played a role in the specific symptoms exhibited by infected plants. She observed that the virus's form influenced how it moved and spread within the plant tissues, leading to the characteristic patterns of discoloration. While many scientists focused on the chemical composition of the virus, Dr. Beale's emphasis on physical structure as a determinant of viral behavior was innovative.
Dr. Beale's work laid the foundation for subsequent research into viral morphology and its impact on plant diseases. Her insights have led to a deeper understanding of how viruses, such as TMV, interact with their hosts. The study of TMV's helical structure has since become a classic example in plant virology, illustrating the link between viral form and function.
The passage most strongly supports the inference that Dr. Beale's research on TMV
A. was initially controversial but ultimately changed scientific understanding of plant viruses.
B. had little impact on the field of plant virology until recent years.
C. focused primarily on the chemical properties of the virus.
D. was immediately recognized for its significance in the scientific community.
E. led to the development of effective treatments for TMV-infected plants.
Dr. Beale observed that TMV particles form helical structures, a feature not widely accepted or understood at the time. Her studies revealed that these helical structures are critical for the virus's ability to infect and replicate within plant cells. She postulated that the helical form allows the virus to interact more effectively with the host cell's mechanisms, facilitating the spread of the infection through the plant's vascular system.
Most notably, Dr. Beale suggested that the helical structure of TMV played a role in the specific symptoms exhibited by infected plants. She observed that the virus's form influenced how it moved and spread within the plant tissues, leading to the characteristic patterns of discoloration. While many scientists focused on the chemical composition of the virus, Dr. Beale's emphasis on physical structure as a determinant of viral behavior was innovative.
Dr. Beale's work laid the foundation for subsequent research into viral morphology and its impact on plant diseases. Her insights have led to a deeper understanding of how viruses, such as TMV, interact with their hosts. The study of TMV's helical structure has since become a classic example in plant virology, illustrating the link between viral form and function.
The passage most strongly supports the inference that Dr. Beale's research on TMV
A. was initially controversial but ultimately changed scientific understanding of plant viruses.
B. had little impact on the field of plant virology until recent years.
C. focused primarily on the chemical properties of the virus.
D. was immediately recognized for its significance in the scientific community.
E. led to the development of effective treatments for TMV-infected plants.
07 Jan 2024, 16:03
Kudos
Bookmarks
Official Solution:
Dr. Helen Purdy Beale, a pioneering virologist, made a groundbreaking discovery about the Tobacco Mosaic Virus (TMV). TMV, known for causing disease in tobacco plants, forms distinctive patterns of mottling and discoloration on the leaves. Dr. Beale's work, initially met with skepticism, has been validated by later research and significantly advanced our understanding of viral structures and plant pathology.
Dr. Beale observed that TMV particles form helical structures, a feature not widely accepted or understood at the time. Her studies revealed that these helical structures are critical for the virus's ability to infect and replicate within plant cells. She postulated that the helical form allows the virus to interact more effectively with the host cell's mechanisms, facilitating the spread of the infection through the plant's vascular system.
Most notably, Dr. Beale suggested that the helical structure of TMV played a role in the specific symptoms exhibited by infected plants. She observed that the virus's form influenced how it moved and spread within the plant tissues, leading to the characteristic patterns of discoloration. While many scientists focused on the chemical composition of the virus, Dr. Beale's emphasis on physical structure as a determinant of viral behavior was innovative.
Dr. Beale's work laid the foundation for subsequent research into viral morphology and its impact on plant diseases. Her insights have led to a deeper understanding of how viruses, such as TMV, interact with their hosts. The study of TMV's helical structure has since become a classic example in plant virology, illustrating the link between viral form and function.
The passage most strongly supports the inference that Dr. Beale's research on TMV
A. was initially controversial but ultimately changed scientific understanding of plant viruses.
B. had little impact on the field of plant virology until recent years.
C. focused primarily on the chemical properties of the virus.
D. was immediately recognized for its significance in the scientific community.
E. led to the development of effective treatments for TMV-infected plants.
The passage notes that Dr. Beale's work, though initially met with skepticism, has been validated by later research and significantly advanced our understanding of viral structures and plant pathology. This suggests her work was initially controversial but later acknowledged for its impact, as stated in option A.
Answer: A
Dr. Helen Purdy Beale, a pioneering virologist, made a groundbreaking discovery about the Tobacco Mosaic Virus (TMV). TMV, known for causing disease in tobacco plants, forms distinctive patterns of mottling and discoloration on the leaves. Dr. Beale's work, initially met with skepticism, has been validated by later research and significantly advanced our understanding of viral structures and plant pathology.
Dr. Beale observed that TMV particles form helical structures, a feature not widely accepted or understood at the time. Her studies revealed that these helical structures are critical for the virus's ability to infect and replicate within plant cells. She postulated that the helical form allows the virus to interact more effectively with the host cell's mechanisms, facilitating the spread of the infection through the plant's vascular system.
Most notably, Dr. Beale suggested that the helical structure of TMV played a role in the specific symptoms exhibited by infected plants. She observed that the virus's form influenced how it moved and spread within the plant tissues, leading to the characteristic patterns of discoloration. While many scientists focused on the chemical composition of the virus, Dr. Beale's emphasis on physical structure as a determinant of viral behavior was innovative.
Dr. Beale's work laid the foundation for subsequent research into viral morphology and its impact on plant diseases. Her insights have led to a deeper understanding of how viruses, such as TMV, interact with their hosts. The study of TMV's helical structure has since become a classic example in plant virology, illustrating the link between viral form and function.
The passage most strongly supports the inference that Dr. Beale's research on TMV
A. was initially controversial but ultimately changed scientific understanding of plant viruses.
B. had little impact on the field of plant virology until recent years.
C. focused primarily on the chemical properties of the virus.
D. was immediately recognized for its significance in the scientific community.
E. led to the development of effective treatments for TMV-infected plants.
The passage notes that Dr. Beale's work, though initially met with skepticism, has been validated by later research and significantly advanced our understanding of viral structures and plant pathology. This suggests her work was initially controversial but later acknowledged for its impact, as stated in option A.
Answer: A
11 Jul 2024, 12:46
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Hi,
I was stuck between option A and B. I eliminated option A because it said "but ultimately changed scientific understanding of plant viruses", and changed specific understanding was the main reason. I could not find any details from the passage that said her work changed specific understanding of plant viruses. The passage does say "Her insights have led to a deeper understanding of how viruses, such as TMV, interact with their hosts" but I felt option A is a bit of a stretch.
However, option B says "had little impact on the field of plant virology until recent years". This did make sense since the passage says "Dr. Beale's work, initially met with skepticism, has been validated by later research and significantly advanced our understanding".
Hence I proceeded with option B.
The official answer is A. Can someone please help explain why B is not/cannot be the answer?
Thanks!
I was stuck between option A and B. I eliminated option A because it said "but ultimately changed scientific understanding of plant viruses", and changed specific understanding was the main reason. I could not find any details from the passage that said her work changed specific understanding of plant viruses. The passage does say "Her insights have led to a deeper understanding of how viruses, such as TMV, interact with their hosts" but I felt option A is a bit of a stretch.
However, option B says "had little impact on the field of plant virology until recent years". This did make sense since the passage says "Dr. Beale's work, initially met with skepticism, has been validated by later research and significantly advanced our understanding".
Hence I proceeded with option B.
The official answer is A. Can someone please help explain why B is not/cannot be the answer?
Thanks!
