Read the passage(s) below and answer the question on the basis of what is stated or implied in the passage(s) and in any introductory material that may be provided.
Passage
A turning leaf stays green at first, then reveals splotches of yellow and red as chlorophyll gradually breaks down. Dark green seems to stay longest in the veins, outlining and defining them. During the summer, chlorophyll breaks down in the heat and light, but it is also being steadily replaced. In the fall, on the other hand, no new pigment is produced, and so we notice the other colors that were always there, although chlorophyll's shocking green hid them from view. With their camouflage gone, we see these colors for the first time all year, and marvel, but they were always there, hidden like a vivid secret beneath the hot glowing greens of summer.
Adapted from Diane Ackerman, A Natural History of the Senses ©1990 Diane Ackerman.
According to the passage, which of the following most directly causes leaves to change their color in the fall?
- A. Chlorophyll in the leaves beginning to break down then
- B. Heat and light causing new pigments to be produced
- C. Existing pigments becoming more uniform
- D. New chlorophyll no longer being produced
Correct Answer & Rationale
Correct Answer: D
Leaves change color in the fall primarily due to the cessation of chlorophyll production. As chlorophyll breaks down and is not replaced, other pigments, such as carotenoids and anthocyanins, become more visible, leading to the vibrant autumn colors. Option A is misleading; while chlorophyll does break down, the key factor is that new chlorophyll is not produced. Option B incorrectly suggests that heat and light create new pigments, which is not the primary cause of color change. Option C is incorrect as it implies existing pigments become uniform rather than highlighting their visibility due to the lack of chlorophyll.
Leaves change color in the fall primarily due to the cessation of chlorophyll production. As chlorophyll breaks down and is not replaced, other pigments, such as carotenoids and anthocyanins, become more visible, leading to the vibrant autumn colors. Option A is misleading; while chlorophyll does break down, the key factor is that new chlorophyll is not produced. Option B incorrectly suggests that heat and light create new pigments, which is not the primary cause of color change. Option C is incorrect as it implies existing pigments become uniform rather than highlighting their visibility due to the lack of chlorophyll.
Other Related Questions
The last sentence of the passage primarily emphasizes which point about jazz?
- A. Jazz is hard to define and varies greatly among performers.
- B. Years of training are needed to hone a jazz musician's skills.
- C. Jazz performances are comparable to paintings and sculptures.
- D. Playing jazz is a highly personal and creative activity.
Correct Answer & Rationale
Correct Answer: D
The last sentence highlights the personal and creative nature of jazz, illustrating how musicians express their individuality through their performances. This aligns with option D, emphasizing the unique artistic voice each musician brings to the genre. Option A, while true, focuses on the complexity of defining jazz rather than its personal nature. Option B addresses the technical aspect of training, which is important but not the central theme of the conclusion. Option C compares jazz to visual arts, but this analogy does not capture the essence of personal expression that the final sentence conveys.
The last sentence highlights the personal and creative nature of jazz, illustrating how musicians express their individuality through their performances. This aligns with option D, emphasizing the unique artistic voice each musician brings to the genre. Option A, while true, focuses on the complexity of defining jazz rather than its personal nature. Option B addresses the technical aspect of training, which is important but not the central theme of the conclusion. Option C compares jazz to visual arts, but this analogy does not capture the essence of personal expression that the final sentence conveys.
The final paragraph suggests that seeing the woman has caused the narrator to
- A. face the negative feelings she has about her new home
- B. realize that she misses her mother more than she admits
- C. think about her own feelings about her family and background
- D. remember the reason she moved away from her home country
Correct Answer & Rationale
Correct Answer: C
The final paragraph indicates that the narrator's encounter with the woman prompts deep reflection on personal emotions and familial connections. This aligns with option C, as it emphasizes the narrator's introspection regarding her family and background. Option A is incorrect; while the narrator may have complex feelings about her new home, the focus is not solely on negativity. Option B suggests a specific longing for her mother, which is not explicitly stated in the text. Option D implies a focus on the reasons for moving, but the narrator's thoughts center more on her feelings than on past decisions. Thus, option C best captures the essence of the narrator's experience.
The final paragraph indicates that the narrator's encounter with the woman prompts deep reflection on personal emotions and familial connections. This aligns with option C, as it emphasizes the narrator's introspection regarding her family and background. Option A is incorrect; while the narrator may have complex feelings about her new home, the focus is not solely on negativity. Option B suggests a specific longing for her mother, which is not explicitly stated in the text. Option D implies a focus on the reasons for moving, but the narrator's thoughts center more on her feelings than on past decisions. Thus, option C best captures the essence of the narrator's experience.
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 highlights a potential gap in public awareness, which the author seeks to address. Option A incorrectly suggests a comparison of costs that may not be discussed in the passage. Option B assumes current use of hydrogen-producing algae by the Department of Energy, which may not be established in the text. Option C presumes that mutant algae cannot photosynthesize, which overlooks the possibility of their adaptability. Each of these options misinterprets the author's intent and the context provided in the passage.
The assumption that readers do not associate the Department of Energy with algae research highlights a potential gap in public awareness, which the author seeks to address. Option A incorrectly suggests a comparison of costs that may not be discussed in the passage. Option B assumes current use of hydrogen-producing algae by the Department of Energy, which may not be established in the text. Option C presumes that mutant algae cannot photosynthesize, which overlooks the possibility of their adaptability. Each of these options misinterprets the author's intent and the context provided in the passage.
At the end of Passage 2. ('While... them'), the expert emphasizes
- A. function over form
- B. theory over practice
- C. ethics over ambition
- D. quality over quantity
Correct Answer & Rationale
Correct Answer: D
The emphasis on quality over quantity highlights the importance of substance in achieving meaningful results. Focusing on quality ensures that efforts lead to impactful outcomes, rather than merely increasing the number of tasks or projects. Option A, function over form, suggests prioritizing practicality, which is not the main point in this context. Option B, theory over practice, implies valuing ideas over action, contradicting the emphasis on tangible quality. Option C, ethics over ambition, shifts the focus to moral considerations rather than the value of high-quality efforts. Thus, the passage underscores the significance of quality in any endeavor.
The emphasis on quality over quantity highlights the importance of substance in achieving meaningful results. Focusing on quality ensures that efforts lead to impactful outcomes, rather than merely increasing the number of tasks or projects. Option A, function over form, suggests prioritizing practicality, which is not the main point in this context. Option B, theory over practice, implies valuing ideas over action, contradicting the emphasis on tangible quality. Option C, ethics over ambition, shifts the focus to moral considerations rather than the value of high-quality efforts. Thus, the passage underscores the significance of quality in any endeavor.