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 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.
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.
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.
In context, the statement that the woman is 'draped from brow to ankle in gold and wind-crushed linen' (sentence 10) primarily:
- A. reveals the narrator's assumptions about the woman's income
- B. explains why the woman might be uncomfortable in the cold weather
- C. shows how different the woman's clothing is from the narrator's clothing
- D. emphasizes how out of place the woman seems in the surrounding environment
Correct Answer & Rationale
Correct Answer: D
The description of the woman being "draped from brow to ankle in gold and wind-crushed linen" emphasizes her opulent attire, suggesting she is out of place in her surroundings. This stark contrast highlights her distinctiveness compared to the environment, reinforcing her isolation. Option A misinterprets the focus on income rather than the visual impact of her clothing. Option B incorrectly assumes discomfort from the cold, which is not the primary focus of the imagery. Option C, while noting a difference in clothing, fails to capture the broader context of the woman’s disconnection from her environment, which is central to the statement.
The description of the woman being "draped from brow to ankle in gold and wind-crushed linen" emphasizes her opulent attire, suggesting she is out of place in her surroundings. This stark contrast highlights her distinctiveness compared to the environment, reinforcing her isolation. Option A misinterprets the focus on income rather than the visual impact of her clothing. Option B incorrectly assumes discomfort from the cold, which is not the primary focus of the imagery. Option C, while noting a difference in clothing, fails to capture the broader context of the woman’s disconnection from her environment, which is central to the statement.