PracticeVideosBlogFlashcards

Question

Passage: A researcher studies the oxidative decarboxylation of pyruvate to acetyl-CoA, catalyzed by the pyruvate dehydrogenase complex (PDC). This multienzyme complex requires five coenzymes: TPP (thiamine pyrophosphate), lipoic acid, CoA, FAD, and NAD⁺. The overall reaction is: Pyruvate + CoA + NAD⁺ → Acetyl-CoA + CO₂ + NADH. The researcher finds that a patient with thiamine (vitamin B1) deficiency cannot perform this reaction effectively. Which of the following best explains WHY thiamine deficiency impairs the PDC reaction?

Chemical Physical

Question · Hard

Question

Passage (CARS): Read the following excerpt and answer the question below. "The concept of 'aesthetic distance' in art criticism refers to the psychological gap between an observer and an artwork, which allows for contemplative engagement rather than immediate emotional reaction. Proponents argue that great art requires this distance — it transforms raw feeling into reflective experience. Critics, however, contend that aesthetic distance is a historically contingent concept rooted in Enlightenment ideals of rational detachment, and that it systematically privileges certain forms of engagement (contemplative, cerebral) over others (embodied, communal). These critics note that for many non-Western and folk traditions, the ideal artistic experience is precisely one of immersive participation, not detached observation. They argue that imposing aesthetic distance as a universal criterion marginalizes vast artistic traditions." The author's primary purpose in this passage is to:

Cars

Question · Medium

Question

Passage (CARS): Read the following excerpt and answer the question below. "Classical economics posited that markets, left to their own devices, tend toward equilibrium through the mechanism of price adjustment: excess supply drives prices down until demand absorbs the surplus, and excess demand drives prices up until supply meets demand. This view, associated with Smith, Ricardo, and later Marshall, treated unemployment as transitory — a temporary dislocation corrected by wage flexibility. The Great Depression challenged this orthodoxy profoundly. Keynes argued that markets could settle into persistent underemployment equilibria, where low demand suppresses investment, which suppresses employment, which further suppresses demand in a self-reinforcing cycle. Government intervention — deficit spending to stimulate demand — could, in Keynes' view, break this cycle by injecting purchasing power that private actors were unwilling to supply." According to the passage, the classical economists' view of unemployment was that it:

Cars

Question · Easy

Question

Passage (CARS): Read the following excerpt and answer the question below. "The history of scientific revolutions, as Kuhn famously argued, is not a story of linear accumulation but of periodic, disruptive paradigm shifts. Normal science operates within an accepted framework — a paradigm — solving puzzles that the framework defines. Anomalies accumulate that cannot be resolved within the existing paradigm until a crisis point is reached; at that point, a new paradigm emerges that reconceptualizes the field. The transition is not fully rational in the traditional sense: paradigms are incommensurable, meaning that competing paradigms do not share a common measure by which one can be definitively proven superior. Scientists, particularly younger ones, may adopt a new paradigm partly for aesthetic or sociological reasons, not purely on the basis of evidential superiority." According to the passage, Kuhn's concept of 'incommensurability' implies that:

Cars

Question · Medium

Question

Passage (CARS): Read the following excerpt and answer the question below. "Linguistic relativity — the hypothesis that language shapes thought — exists on a spectrum of claims. The strong form (linguistic determinism), associated with Benjamin Lee Whorf, holds that language determines thought: speakers of different languages live in fundamentally different cognitive worlds and cannot conceive of categories absent in their language. The weak form holds that language influences (but does not determine) thought, biasing certain cognitive tendencies or making certain distinctions easier or harder to draw. Decades of experimental linguistics have largely discredited the strong form: people can reason about concepts without words for them. The weak form, however, has received substantial empirical support — studies show that language communities differ in color discrimination, spatial reasoning, and time perception in ways that correlate with linguistic structure." The author's attitude toward the weak form of linguistic relativity is best described as:

Cars

Question · Easy

Question

Passage (CARS): Read the following excerpt and answer the question below. "The emergence of the novel as a literary form in the eighteenth century coincided with the rise of the middle class, literacy expansion, and individualism. Unlike epic poetry or drama, the novel privileges interiority — it grants readers access to a character's private thoughts, anxieties, and moral deliberations in real time. Critics such as Ian Watt have argued that the novel is uniquely positioned to explore the tension between individual desire and social constraint, a tension that defines middle-class life. The novel's formal properties — its length, its capacity for digression, its flexible narrator — make it the ideal vehicle for this exploration. However, postcolonial critics have challenged this account, noting that it centers the European novel and ignores rich narrative traditions in Africa, South Asia, and the Americas that predate or parallel the European form." The postcolonial critics mentioned in the passage would most likely agree with which of the following?

Cars

Question · Medium

Question

Passage (CARS): Read the following excerpt and answer the question below. "Moral realists hold that there are objective moral facts — facts about what is right or wrong that hold independently of what any individual or culture believes. On this view, to say 'torture is wrong' is to assert something that is either objectively true or false, in the same way that 'water boils at 100°C at sea level' is either true or false. Moral anti-realists deny this, holding that moral judgments are not truth-apt (expressivism), or that while they can be true or false, their truth is constituted by human attitudes, not by mind-independent facts (constructivism). The debate has practical implications: realists argue that cross-cultural moral criticism is coherent (one culture can be genuinely wrong about slavery), while anti-realists worry that realism smuggles in ideological assumptions by treating contingent cultural norms as objective facts." According to the passage, what is the primary practical implication of moral realism cited by its proponents?

Cars

Question · Easy

Question

Passage (CARS): Read the following excerpt and answer the question below. "Urban sociologists have long noted that cities do not simply reflect their populations — they actively shape them. The physical arrangement of neighborhoods, the location of parks and transit lines, the zoning of commercial and residential spaces, all encode values and create differential life opportunities. Feminist urban theorists have extended this analysis, arguing that city design has historically reflected and reinforced gendered divisions of labor. Cities designed around automobile commutes to suburban homes assumed a male breadwinner who traveled to work and a female caregiver who managed the domestic sphere. Pedestrian infrastructure, proximity of services, and public safety were designed for a specific model of urban life that left women, children, and the elderly systematically under-served." The feminist urban theorists described in the passage would most likely SUPPORT which of the following urban planning decisions?

Cars

Question · Medium

Question

Passage (CARS): Read the following excerpt and answer the question below. "Memory, as contemporary neuroscience reveals, is not a passive archive but an active reconstruction. Each time a memory is recalled, it is temporarily destabilized and must be re-consolidated — a process called reconsolidation. During reconsolidation, memories can be altered by new information, current emotional states, or leading questions. This reconsolidation vulnerability has profound implications for eyewitness testimony: research by Elizabeth Loftus and colleagues showed that post-event information (such as misleading questions) can systematically distort recall, creating false memories that feel vivid and certain. Subjects shown a film of an accident and later asked about 'the speed of the cars when they smashed into each other' recalled higher speeds and were more likely to report seeing broken glass (which was absent) than subjects asked about cars that 'hit' each other." The information about reconsolidation serves primarily to:

Cars

Question · Medium

Question

Passage (CARS): Read the following excerpt and answer the question below. "The concept of cultural appropriation has generated significant debate. One position holds that borrowing cultural elements across group boundaries is inherently exploitative when it occurs in conditions of historical power asymmetry: dominant groups profit from, trivialize, or misrepresent elements that hold sacred or significant meaning within marginalized communities. The opposing position argues that cultural exchange is inevitable, and that restricting cultural borrowing enforces rigid group boundaries, essentializes culture as static property, and impedes the creative hybridization that has always driven artistic innovation. A nuanced middle position acknowledges both concerns: distinguishing between appreciative engagement — which involves credit, compensation, and genuine understanding — and extractive appropriation — which takes without acknowledgment or comprehension." The 'nuanced middle position' described in the passage most resembles which reasoning approach?

Cars

Question · Hard

Question

Passage (CARS): Read the following excerpt and answer the question below. "Behavioral economics has challenged the homo economicus model of classical economic theory. The classical model assumes rational agents who have stable, consistent preferences, process all available information, and make decisions to maximize utility. Behavioral economists, drawing on psychology experiments by Kahneman and Tversky, have documented systematic cognitive biases: anchoring (over-relying on first information), loss aversion (losses feel approximately twice as painful as equivalent gains feel pleasurable), the endowment effect (valuing something more once we own it), and availability heuristic (overestimating likelihood of vivid, easily recalled events). These biases are not random noise but predictable, systematic patterns — which has led some economists to argue they can be incorporated into a richer model of human decision-making." Which of the following conclusions is most directly supported by the passage?

Cars

Question · Easy

Loading more…