Which claim from the passage best describes the benefits of nanotechnology?

A. Scientists can develop novel technologies and products.

B. Nanotechnology is defined as the understanding and control of matter at dimensions of roughly 1 to 100 nanometers.

C. The different colors can be used in simple medical tests to indicate infection or disease.

D. Unique properties of materials emerge.

Correct Answer: D
Rationale: The correct answer is D because the passage specifically states that at the nanoscale, unique properties of materials emerge, which is a key benefit of nanotechnology. Choice A talks about what scientists can do but does not directly describe the benefits mentioned in the passage. Choice B is the definition of nanotechnology and not a specific benefit. Choice C mentions the use of different colors in medical tests, which is a specific application rather than a general benefit of nanotechnology.

FRAX takes into account all of the following factors EXCEPT ___________.

• A. Lifestyle choices
• B. Exposure to toxins
• C. Genetic heritage
• D. Exposure to sunlight

Correct Answer: B
Rationale: FRAX, a tool used to assess fracture risk, considers various factors like lifestyle choices, genetic heritage, and exposure to sunlight. However, exposure to toxins is not mentioned in the provided extract as a factor considered by FRAX. Therefore, the correct answer is B. Exposure to toxins is unrelated to fracture risk assessment as per the information provided. Lifestyle choices, genetic heritage, and exposure to sunlight are all factors that FRAX takes into consideration to determine the risk of experiencing a fracture within the next decade.

In this passage, which of these is not mentioned as a possible sign of heat exhaustion?

• A. Dizziness
• B. Nausea
• C. Headache
• D. Drowsiness

Correct Answer: D
Rationale: The passage mentions dizziness, nausea, and headache as symptoms but does not list drowsiness.

Which of the following would be the best title for this passage?

• A. Bicycles are better.
• B. A ride through the history of bicycles.
• C. Cycle your way to fitness.
• D. The popularity of bicycles.

Correct Answer: B
Rationale: The best title for this passage would be 'A ride through the history of bicycles' as it provides a comprehensive overview of the historical development of bicycles from their invention to modern times. Choice A, 'Bicycles are better,' is incorrect as it does not capture the essence of the passage, which focuses on the history and evolution of bicycles rather than their superiority. Choice C, 'Cycle your way to fitness,' is misleading as the passage does not primarily discuss the fitness aspect of cycling but instead focuses on the evolution of bicycle design. Choice D, 'The popularity of bicycles,' is too narrow as it only touches on one aspect mentioned briefly in the passage, while the passage covers a broader historical perspective.

What is the meaning of the word disparate as used in the first paragraph?

• A. Unusual
• B. Diverse
• C. Trivial
• D. Damaging

Correct Answer: B
Rationale: "Disparate" means diverse or different. The passage discusses how Lyme disease has various symptoms that mimic other diseases, making it difficult to diagnose.