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
In sentence 13, the narrator most likely uses the image of 'a tightly woven fruit basket' to suggest that the rain is:
- A. a physical challenge that must be endured
- B. falling so heavily that she can barely see through it
- C. a reminder of the weather in harvest season
- D. important because it allows crops to survive
Correct Answer & Rationale
Correct Answer: A
The image of "a tightly woven fruit basket" conveys the idea of resilience and endurance, suggesting that the rain is a challenge that must be faced. This metaphor implies that just like a tightly woven basket holds its contents together despite external pressures, the narrator must endure the rain's intensity. Option B misinterprets the imagery; while heavy rain can obscure vision, the metaphor focuses more on endurance than visibility. Option C incorrectly links the rain to harvest season, which is not implied in the context. Option D, while true about rain's importance for crops, does not capture the struggle suggested by the basket imagery.
The image of "a tightly woven fruit basket" conveys the idea of resilience and endurance, suggesting that the rain is a challenge that must be faced. This metaphor implies that just like a tightly woven basket holds its contents together despite external pressures, the narrator must endure the rain's intensity. Option B misinterprets the imagery; while heavy rain can obscure vision, the metaphor focuses more on endurance than visibility. Option C incorrectly links the rain to harvest season, which is not implied in the context. Option D, while true about rain's importance for crops, does not capture the struggle suggested by the basket imagery.
Both authors indicate that meeting the world's food needs should not come at the expense of:
- A. innovative farming practices
- B. environmental integrity
- C. humane treatment of animals
- D. economic development
Correct Answer & Rationale
Correct Answer: B
Meeting the world’s food needs should prioritize environmental integrity, as it ensures sustainable practices that protect ecosystems for future generations. If environmental health is compromised, long-term agricultural productivity is at risk. Option A, innovative farming practices, while important, can still be pursued without sacrificing environmental integrity. Option C, humane treatment of animals, is critical but may not directly relate to the broader environmental concerns outlined by the authors. Option D, economic development, is essential for food security, but it should not overshadow the imperative of maintaining ecological balance.
Meeting the world’s food needs should prioritize environmental integrity, as it ensures sustainable practices that protect ecosystems for future generations. If environmental health is compromised, long-term agricultural productivity is at risk. Option A, innovative farming practices, while important, can still be pursued without sacrificing environmental integrity. Option C, humane treatment of animals, is critical but may not directly relate to the broader environmental concerns outlined by the authors. Option D, economic development, is essential for food security, but it should not overshadow the imperative of maintaining ecological balance.
The author implies that the social sciences:
- A. are valued for their techniques
- B. can make no contribution to progress
- C. cannot deal with long-term issues
- D. may someday add to the world's knowledge
Correct Answer & Rationale
Correct Answer: D
The social sciences are portrayed as fields that hold potential for future contributions to global knowledge, indicating optimism about their evolving role. Option A suggests that their value lies solely in techniques, which limits their broader impact. Option B dismisses their potential entirely, contradicting the author's implication of future contributions. Option C incorrectly asserts that social sciences cannot address long-term issues, overlooking their capability to analyze historical trends and societal changes. Thus, the emphasis on future contributions aligns best with the text's implications.
The social sciences are portrayed as fields that hold potential for future contributions to global knowledge, indicating optimism about their evolving role. Option A suggests that their value lies solely in techniques, which limits their broader impact. Option B dismisses their potential entirely, contradicting the author's implication of future contributions. Option C incorrectly asserts that social sciences cannot address long-term issues, overlooking their capability to analyze historical trends and societal changes. Thus, the emphasis on future contributions aligns best with the text's implications.
When the author writes that Chilesaurus diegosuarezi “should have been a meat-eater,†she most likely means that the species:
- A. would have been healthier if it had eaten meat
- B. would have grown even larger if it had eaten meat
- C. had the head, neck, and teeth of a meat-eater
- D. had body features similar to those of its meat-eating relative
Correct Answer & Rationale
Correct Answer: D
The statement implies that Chilesaurus diegosuarezi possesses physical characteristics akin to those of carnivorous dinosaurs. Option D accurately reflects this by highlighting that its body features resemble those of its meat-eating relatives, suggesting an evolutionary expectation based on morphology. Option A incorrectly assumes a health benefit from a meat-based diet, which is not the focus of the author's observation. Option B speculates on size without evidence, as diet does not directly correlate with growth potential in this context. Option C, while partially true about its head and teeth, overlooks the broader comparison to body features, making D the most comprehensive choice.
The statement implies that Chilesaurus diegosuarezi possesses physical characteristics akin to those of carnivorous dinosaurs. Option D accurately reflects this by highlighting that its body features resemble those of its meat-eating relatives, suggesting an evolutionary expectation based on morphology. Option A incorrectly assumes a health benefit from a meat-based diet, which is not the focus of the author's observation. Option B speculates on size without evidence, as diet does not directly correlate with growth potential in this context. Option C, while partially true about its head and teeth, overlooks the broader comparison to body features, making D the most comprehensive choice.