Nursing Elites

1. Two isotopes of the same element have different numbers of:

• A. Electrons
• B. Protons
• C. Neutrons
• D. Nuclei

Correct answer: C

Rationale: The correct answer is C: 'Neutrons.' Isotopes are variants of an element that have the same number of protons and electrons but differ in the number of neutrons they contain. This difference in neutron count is what distinguishes isotopes from each other while maintaining the same chemical properties. Choice A, 'Electrons,' is incorrect because isotopes of the same element have the same number of electrons. Choice B, 'Protons,' is incorrect because isotopes of the same element have the same number of protons. Choice D, 'Nuclei,' is incorrect as nuclei refer to the central part of an atom containing protons and neutrons, and the question specifically asks about differences between isotopes of the same element.

2. Which of the following best describes the purpose of the passage?

• A. to inform Mr. Morgan that he will likely not receive an offer for the job of Lead Technician due to the high number of applicants
• B. to express gratitude to Mr. Morgan for applying for the position of Lead Technician
• C. to offer Mr. Morgan the position of Lead Technician
• D. to notify Mr. Morgan that the review of candidates will take longer than expected

Correct answer: A

Rationale: The purpose of the passage is to inform Mr. Morgan that he will likely not receive an offer for the job of Lead Technician due to the high number of applicants. The passage mentions the high volume of applications and the competitive nature of the selection process, indicating that Mr. Morgan may not be successful. Choice B is incorrect because the passage does not express gratitude to Mr. Morgan but rather informs him of the situation. Choice C is incorrect as there is no offer made in the passage. Choice D is incorrect as the passage does not specifically state that the review will take longer than expected, but rather that it will take longer than previously stated.

3. Which statement is not a detail from the passage?

• A. Promoters of dietary supplements can make any claims that are supported by research.
• B. GMP requirements for large manufacturers went into effect in 2008.
• C. The FDA regulates dietary supplements in the same way as prescription medications.
• D. Consumers should research supplement claims before making a purchase.

Correct answer: A

Rationale: The statement "Promoters of dietary supplements can make any claims that are supported by research" is not a detail from the passage. The passage mentions that manufacturers, not promoters, can make claims supported by research. The primary focus is on the regulations and manufacturing standards for dietary supplements. Choice B is a detail from the passage as it mentions the GMP requirements for large manufacturers going into effect in 2008. Choice C is incorrect as the passage states that FDA regulations for dietary supplements are not the same as those for prescription medications. Choice D is also supported by the passage, emphasizing that consumers should research supplement claims before making a purchase to ensure accuracy and safety.

4. How will mildly elevated levels of thyroxine affect the heart rate?

• A. Stop the heart rate
• B. No effect
• C. Decrease the heart rate
• D. Increase the heart rate

Correct answer: D

Rationale: Mildly elevated levels of thyroxine will increase the heart rate. Thyroxine, a hormone produced by the thyroid gland, regulates metabolism. Elevated thyroxine levels can lead to increased metabolism, resulting in an elevated heart rate. Choice A is incorrect as mildly elevated thyroxine levels do not stop the heart rate. Choice B is incorrect because elevated thyroxine levels do have an effect on heart rate. Choice C is incorrect as elevated thyroxine levels typically lead to an increase rather than a decrease in heart rate.

5. During inhalation, which muscle contracts to increase the volume of the thoracic cavity, allowing air to flow into the lungs?

• A. Diaphragm
• B. Intercostal muscles
• C. Abdominal muscles
• D. Pectoral muscles

Correct answer: A

Rationale: The diaphragm is the primary muscle responsible for inhalation. When it contracts, it moves downward, increasing the volume of the thoracic cavity and creating a pressure gradient that allows air to flow into the lungs. While the intercostal muscles also play a role in expanding the chest cavity during inhalation, the diaphragm is the main muscle involved in this process. Abdominal muscles and pectoral muscles are not directly involved in the process of inhalation.

Similar Questions