Command Of Evidence Mock Tests

As part of a research summary: "A recent study found that students who participated in a daily mindfulness program reported lower levels of stress and anxiety. The researchers measured stress hormones in both the mindfulness group and a control group, finding significantly lower cortisol levels in the participants who practiced mindfulness." What can be concluded from the study described in the passage?

In this excerpt from an essay about the history of mathematics: "The concept of zero, now fundamental to all of mathematics, was not widely accepted in Europe until the thirteenth century, despite its use in Indian and Islamic mathematics centuries earlier. Fibonacci's introduction of Hindu-Arabic numerals to European scholars helped dismantle the dominance of Roman numerals, which lacked a zero and made complex calculations nearly impossible." According to the passage, what role did Fibonacci play in the acceptance of zero in Europe? a) He discovered zero independently of Indian and Islamic mathematicians. b) He introduced Hindu-Arabic numerals, including zero, to European scholars. c) He proved that Roman numerals were superior to Hindu-Arabic numerals. d) He prevented the adoption of zero by promoting algebraic methods instead.

In this excerpt from a biology textbook: "CRISPR-Cas9 technology has revolutionized genetic engineering by allowing scientists to make precise edits to DNA sequences. Unlike earlier gene-editing tools that required extensive and costly preparation, CRISPR systems can be reprogrammed simply by changing the guide RNA sequence. This flexibility has accelerated research in fields ranging from developing disease-resistant crops to exploring potential therapies for genetic disorders." The passage implies that earlier gene-editing tools were less attractive to researchers because they: a) could not edit DNA sequences with any precision b) required significant time and financial investment to adapt c) were only applicable to plant genetics d) had been completely replaced by CRISPR before becoming widely used

Read the following passage: "According to Ohm's Law, the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R). This relationship is expressed by the formula V = IR. If the voltage in a circuit is doubled while the resistance remains constant, the current will also double." If a circuit has a resistance of 10 ohms and a voltage of 50 volts, what is the current flowing through the circuit?

Read the following research summary: "CRISPR-Cas9 gene editing relies on a guide RNA molecule that binds to a specific DNA sequence and directs the Cas9 enzyme to that location, where it creates a double-strand break. Researchers have discovered that off-target effects — unintended cuts at similar but incorrect DNA sequences — remain a significant challenge. To address this, scientists developed 'high-fidelity' Cas9 variants (HF1) that reduce off-target cuts without compromising on-target efficiency." Based on the passage, what is the primary function of guide RNA in CRISPR-Cas9 gene editing?

As part of an economic report on the gig economy: "The rise of platform-based work has created a new category of employment that defies traditional classification. Delivery drivers, freelance writers, and ride-share operators are technically independent contractors, yet many depend exclusively on a single platform for their income. This dependency raises questions about worker protections that were designed for the employer-employee relationship of the twentieth century." The passage suggests that gig workers differ from traditional independent contractors because they: a) work exclusively for government platforms b) often rely on a single platform for their livelihood c) receive more legal protections than employees d) are not affected by twentieth-century labor laws

In Mary Shelley's Frankenstein, the creature argues that his violence stems not from inherent malice but from society's refusal to accept him. Which quotation from the novel best supports this claim?

Read the following passage about the development of antibiotics: "Alexander Fleming discovered penicillin in 1928 when he noticed that a mold called Penicillium had killed bacteria in a petri dish. However, it was not until 1938 that Howard Florey and Ernst Chain developed a method to purify and mass-produce penicillin. During World War II, penicillin saved countless soldiers' lives by treating infected wounds." Which finding, if true, would most directly challenge the passage's implication about Fleming's role?