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 of the following, if true, would most challenge the 'implication' mentioned in the fourth sentence? 'Some experts reject the implication that Çatalhöyük’s farmers cultivated distant fields, since large quantities of grain would have had to be transported.'
- A. Çatalhöyük's farmers obtained through trade the wheat and barley that Rosen analyzed.
- B. Çatalhöyük's farmers understood the impact of soil conditions on crop productivity.
- C. Çatalhöyük's farmers shared wheat and barley fields with neighboring villages.
- D. Çatalhöyük's farmers used wood that deteriorated in the damp environment.
Correct Answer & Rationale
Correct Answer: A
Option A directly challenges the implication that farmers at Çatalhöyük cultivated distant fields by suggesting they obtained the grains through trade instead. This undermines the need for transporting large quantities of grain from faraway locations, thus supporting the idea that local cultivation was not necessary. Option B focuses on soil conditions but does not address the transportation issue, leaving the original implication intact. Option C implies shared resources with neighbors but does not clarify whether these fields were local or distant, failing to challenge the transportation concern. Option D discusses environmental factors unrelated to the cultivation and transport of grain, making it irrelevant to the implication.
Option A directly challenges the implication that farmers at Çatalhöyük cultivated distant fields by suggesting they obtained the grains through trade instead. This undermines the need for transporting large quantities of grain from faraway locations, thus supporting the idea that local cultivation was not necessary. Option B focuses on soil conditions but does not address the transportation issue, leaving the original implication intact. Option C implies shared resources with neighbors but does not clarify whether these fields were local or distant, failing to challenge the transportation concern. Option D discusses environmental factors unrelated to the cultivation and transport of grain, making it irrelevant to the implication.
Which word best completes the sentence?
- A. malleable
- B. obscure
- C. ominous
- D. vigorous
Correct Answer & Rationale
Correct Answer: A
In this context, "malleable" refers to something that can be easily shaped or influenced, making it the most fitting choice for a sentence discussing adaptability or flexibility. Option B, "obscure," implies something that is not well-known or hard to understand, which does not align with the intended meaning. Option C, "ominous," suggests a sense of foreboding or threat, which is unrelated to the idea of adaptability. Option D, "vigorous," conveys strength or energy but lacks the nuance of flexibility that "malleable" provides. Thus, "malleable" is the most appropriate word to complete the sentence.
In this context, "malleable" refers to something that can be easily shaped or influenced, making it the most fitting choice for a sentence discussing adaptability or flexibility. Option B, "obscure," implies something that is not well-known or hard to understand, which does not align with the intended meaning. Option C, "ominous," suggests a sense of foreboding or threat, which is unrelated to the idea of adaptability. Option D, "vigorous," conveys strength or energy but lacks the nuance of flexibility that "malleable" provides. Thus, "malleable" is the most appropriate word to complete the sentence.
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.
Which of the following results is LEAST compatible with the goal expressed in the third sentence of Passage 2 ('The paramount concern must be to increase crop yields in environmentally sensitive ways that protect human health and the soil and water that are agriculture’s very foundation')?
- A. An international ban on the use of agrochemicals drives several multinational corporations out of business
- B. A species of bird becomes extinct after forests in which these birds nested are cleared to create farmland
- C. A rural community shows an increased rate of disease after local farmers adopt chemical-intensive techniques
- D. Government subsidies to farmers encourage overproduction of certain crops to the detriment of others
Correct Answer & Rationale
Correct Answer: C
Option C is least compatible with the goal of increasing crop yields while protecting human health and the environment. An increase in disease rates due to chemical-intensive farming directly contradicts the aim of safeguarding human health. Option A, while it may harm businesses, reflects a move towards environmentally sensitive practices by banning harmful chemicals. Option B highlights the negative ecological impact of deforestation for agriculture, which undermines environmental health. Option D addresses overproduction and its ecological consequences, aligning with the need for sustainable practices. Thus, C is the option that most clearly opposes the stated goal.
Option C is least compatible with the goal of increasing crop yields while protecting human health and the environment. An increase in disease rates due to chemical-intensive farming directly contradicts the aim of safeguarding human health. Option A, while it may harm businesses, reflects a move towards environmentally sensitive practices by banning harmful chemicals. Option B highlights the negative ecological impact of deforestation for agriculture, which undermines environmental health. Option D addresses overproduction and its ecological consequences, aligning with the need for sustainable practices. Thus, C is the option that most clearly opposes the stated goal.