During the process of photosynthesis, algae produce a small amount of hydrogen gas. Recently, microbiologists funded by the Department of Energy figured out how to create mutant versions of algae that generate much more hydrogen. You are probably wondering why the Department of Energy is funding this research. The answer is that the hydrogen produced by algae could one day be used to provide energy to entire cities
What assumption does the author of the passage make?
- A. Gases produced by algae will be cheaper to produce than other gases.
- B. The Department of Energy is already using hydrogen-producing algae as a source of energy.
- C. Mutant versions of algae will not be capable of the process of photosynthesis.
- D. Readers do not associate the Department of Energy with algae research.
Correct Answer & Rationale
Correct Answer: D
The assumption that readers do not associate the Department of Energy with algae research is supported by the passage's context, which aims to highlight the potential of algae in energy production. This suggests a need to clarify the Department's involvement. Option A is incorrect as the passage does not provide a comparison of costs related to gas production. Option B is misleading; the passage does not confirm the Department's current use of hydrogen-producing algae. Option C is not supported; the passage does not address the capabilities of mutant algae in photosynthesis. Thus, option D aligns with the author's intent to bridge a knowledge gap.
The assumption that readers do not associate the Department of Energy with algae research is supported by the passage's context, which aims to highlight the potential of algae in energy production. This suggests a need to clarify the Department's involvement. Option A is incorrect as the passage does not provide a comparison of costs related to gas production. Option B is misleading; the passage does not confirm the Department's current use of hydrogen-producing algae. Option C is not supported; the passage does not address the capabilities of mutant algae in photosynthesis. Thus, option D aligns with the author's intent to bridge a knowledge gap.
Other Related Questions
Which choice best describes the overall structure of the passage?
- A. The passage examines the effect of decreased environmental awareness on some animals' predation risk and then describes the strategies those animals use to increase their environmental awareness while sleeping.
- B. The passage distinguishes between bihemispheric slow-wave sleep (BSWS) and unihemispheric slow-wave sleep (USWS) and then explains why USWS is less beneficial than BSWS for animals such as mallards and penguins.
- C. The passage discusses the advantages for some animals of sleeping at the center of a group and then questions whether those advantages extend to colonial birds.
- D. The passage provides an extended description of how mallards typically sleep and then compares sleeping behaviors in mallards to those in penguins.
Correct Answer & Rationale
Correct Answer: C
Choice C accurately captures the passage's structure, which begins by exploring the benefits of group sleeping for certain animals and then raises a critical inquiry regarding the applicability of these benefits to colonial birds. This dual focus on advantages and questioning reflects a balanced examination of the topic. Option A misrepresents the content by suggesting a focus on predation risk and strategies for environmental awareness, which is not the main theme. Option B incorrectly centers on a comparison of sleep types, neglecting the broader discussion of group sleeping benefits. Option D inaccurately emphasizes a detailed comparison of mallards and penguins, rather than the initial exploration of group sleeping advantages.
Choice C accurately captures the passage's structure, which begins by exploring the benefits of group sleeping for certain animals and then raises a critical inquiry regarding the applicability of these benefits to colonial birds. This dual focus on advantages and questioning reflects a balanced examination of the topic. Option A misrepresents the content by suggesting a focus on predation risk and strategies for environmental awareness, which is not the main theme. Option B incorrectly centers on a comparison of sleep types, neglecting the broader discussion of group sleeping benefits. Option D inaccurately emphasizes a detailed comparison of mallards and penguins, rather than the initial exploration of group sleeping advantages.
Why does the author place quotation marks around the word 'patriotic' (sentence 2)?
- A. To attribute to postwar Americans the perception of Wrigley’s gum as patriotic
- B. To praise the patriotism the Wrigley Company demonstrated during wartime
- C. To show that American soldiers used the word 'patriotic' to describe Wrigley’s gum
- D. To reveal that the Wrigley Company changed the name of its gum to include the word 'patriotic'
Correct Answer & Rationale
Correct Answer: A
The use of quotation marks around 'patriotic' indicates that the term reflects the perception held by postwar Americans rather than the author's own endorsement. This suggests a distance from the term, highlighting it as a viewpoint rather than an absolute truth. Option B misinterprets the author's intent; the quotation marks do not imply praise for the Wrigley Company's actions. Option C inaccurately suggests that soldiers specifically coined the term in reference to the gum, which is not supported by the context. Option D incorrectly assumes that the company changed the product name, which is not indicated in the text.
The use of quotation marks around 'patriotic' indicates that the term reflects the perception held by postwar Americans rather than the author's own endorsement. This suggests a distance from the term, highlighting it as a viewpoint rather than an absolute truth. Option B misinterprets the author's intent; the quotation marks do not imply praise for the Wrigley Company's actions. Option C inaccurately suggests that soldiers specifically coined the term in reference to the gum, which is not supported by the context. Option D incorrectly assumes that the company changed the product name, which is not indicated in the text.
The author's description focuses mainly on Coleman's:
- A. humility
- B. audacity
- C. creativity
- D. generosity
Correct Answer & Rationale
Correct Answer: B
The author's description emphasizes Coleman's audacity, showcasing his boldness and willingness to take risks in pursuit of his goals. This trait is pivotal in illustrating his character and driving force. Option A, humility, is not a central theme; instead, Coleman's confidence is highlighted. Option C, creativity, while relevant, is secondary to his audacious nature, which propels his innovative ideas. Option D, generosity, does not align with the primary focus, as the text centers on his daring actions rather than acts of giving. Thus, audacity stands out as the defining characteristic.
The author's description emphasizes Coleman's audacity, showcasing his boldness and willingness to take risks in pursuit of his goals. This trait is pivotal in illustrating his character and driving force. Option A, humility, is not a central theme; instead, Coleman's confidence is highlighted. Option C, creativity, while relevant, is secondary to his audacious nature, which propels his innovative ideas. Option D, generosity, does not align with the primary focus, as the text centers on his daring actions rather than acts of giving. Thus, audacity stands out as the defining characteristic.
It can most reasonably be inferred from the passage that the music products industry would have a higher share of the e-commerce market if:
- A. entry-level school music instruments were sold to schools' music directors rather than directly to students
- B. the consumer market were to place less value on convenience and variety and more on competitive pricing
- C. a few types of music products sold predominantly in brick-and-mortar stores were excluded from the calculation
- D. brick-and-mortar store managers improved customer service and provided better training for their installation experts
Correct Answer & Rationale
Correct Answer: C
The inference about the music products industry’s higher e-commerce market share hinges on the exclusion of certain products sold mainly in physical stores. If these items are not considered, the e-commerce segment could appear more dominant. Option A suggests a shift in sales strategy, but it doesn’t directly impact the overall market share dynamics. Option B misplaces the focus on consumer preferences, which does not inherently increase e-commerce share. Option D addresses customer service improvements in physical stores, which would not enhance online sales. Thus, excluding certain products from the calculation is the most logical inference for a higher e-commerce share.
The inference about the music products industry’s higher e-commerce market share hinges on the exclusion of certain products sold mainly in physical stores. If these items are not considered, the e-commerce segment could appear more dominant. Option A suggests a shift in sales strategy, but it doesn’t directly impact the overall market share dynamics. Option B misplaces the focus on consumer preferences, which does not inherently increase e-commerce share. Option D addresses customer service improvements in physical stores, which would not enhance online sales. Thus, excluding certain products from the calculation is the most logical inference for a higher e-commerce share.