Nursing Elites

1. The word 'cation' is closest in meaning to:

• A. element
• B. nutrient similar to magnesium
• C. symptom of deficiency
• D. nutritional supplement

Correct answer: A

Rationale: The word 'cation' refers to a positively charged ion, which is an atom or molecule that has lost one or more electrons. It is not related to nutrients, symptoms, or supplements. Therefore, the closest in meaning to 'cation' among the given choices is 'element.' In the provided extract, it mentions that cations like magnesium can affect the body's ability to absorb other cations, including calcium and potassium. This further emphasizes that 'cation' is related to elements rather than nutrients, symptoms, or supplements.

2. Which of the following most accurately describes the author's main conclusion?

• A. Leif Erikson is a legendary Viking explorer.
• B. Leif Erikson deserves more credit for exploring America.
• C. Spreading Christianity motivated Leif's expeditions.
• D. Leif Erikson contacted the natives nearly five hundred years before Columbus.

Correct answer: B

Rationale: The correct answer is B: 'Leif Erikson deserves more credit for exploring America.' The author's main conclusion, as supported by the extract, is that Leif Erikson should receive more credit for his contributions in exploring the New World. Choice A is incorrect as it does not capture the essence of the author's conclusion, which is about recognizing Erikson's achievements rather than just labeling him as a legendary explorer. Choice C is incorrect because while Leif Erikson did convert to Christianity, the primary focus of the conclusion is on his exploration rather than his motivations. Choice D is incorrect as it only mentions one aspect of Erikson's achievements (contacting the natives) and does not encompass the broader idea of giving him more credit for his explorations.

3. Which of the following is a primary source?

• A. A critic's summary of a book on Abraham Lincoln.
• B. A peer-reviewed scientific journal's table of contents.
• C. A gene splicing study report with data.
• D. A news article quoting research into curing cancer.

Correct answer: C

Rationale: The correct answer is C. A gene splicing study report with data is a primary source because it provides original research findings. In contrast, choice A is a secondary source as it involves a critic's interpretation of a book. Choice B, the table of contents of a peer-reviewed scientific journal, is not a primary source but a tertiary source, providing a summary of articles. Choice D, a news article quoting research, is a secondary source that presents information based on primary sources rather than the original research itself.

4. Which of the following bones is not associated with the leg?

• A. femur
• B. tibia
• C. patella
• D. radius

Correct answer: D

Rationale: The correct answer is D, radius. According to the passage, the radius is a bone in the lower arm, not in the leg. The femur, tibia, and patella are bones associated with the leg. The femur is the thigh bone, the tibia is the shin bone, and the patella is the kneecap. Therefore, the radius is the only bone among the options that is not associated with the leg.

5. How did Hedy Lamarr contribute significantly to the advancement of technology?

• A. The technology of the era wasn't advanced enough to easily implement Lamarr's system
• B. She collaborated with the science engineering team employed by Howard Hughes, the aviation tycoon
• C. She had several failed inventions, such as an improved traffic light and a carbonated drink
• D. Her work led to the future development of cellular phones, Bluetooth, and Wi-Fi.

Correct answer: D

Rationale: The correct answer is D because Hedy Lamarr's invention of a frequency-hopping system, along with George Antheil, laid the foundation for technologies like cellular phones, Bluetooth, and Wi-Fi. This significant contribution revolutionized communication technology. Choice A is incorrect because it focuses on the limitations of the era's technology rather than Lamarr's contributions. Choice B is incorrect as it briefly mentions her collaboration but does not directly relate it to technological advancements. Choice C is incorrect as it highlights her failed inventions, which are not indicative of her significant contributions to technology.

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