Nursing Elites

1. Which of the following represents an opinion statement on the part of the author?

• A. According to the CDC, tobacco products cause nearly six million deaths per year.
• B. Nicotine addicts sometimes pay more for a pack of cigarettes than gas.
• C. They risk staining their teeth and fingers with tar.
• D. Smokers tend to stink and create pervasive nastiness.

Correct answer: D

Rationale: The statement 'Smokers tend to stink and create pervasive nastiness' is an opinion since it reflects the author's subjective view on the hygiene and social impact of smoking. The other choices, A, B, and C, are all factual statements based on research or observations without expressing a personal viewpoint. Choice A presents a statistic from the CDC, choice B discusses a comparison related to the cost of cigarettes, and choice C describes a potential consequence of smoking without inserting personal judgment.

2. What is the main function of the epiglottis, a small flap of cartilage located above the larynx?

• A. To warm and humidify inhaled air
• B. To control the passage of food and air
• C. To produce sound vibrations for speech
• D. To sense the presence of foreign objects

Correct answer: B

Rationale: The main function of the epiglottis is to control the passage of food and air. It acts as a cover for the trachea during swallowing to prevent food from entering the airway. This mechanism ensures that food safely travels down the esophagus to the stomach, while air simultaneously enters the trachea and moves into the lungs for respiration. Choice A is incorrect as the warming and humidifying of inhaled air primarily occur in the nasal cavity. Choice C is incorrect because sound production for speech involves structures like the vocal cords rather than the epiglottis. Choice D is incorrect as sensing foreign objects is not a primary function of the epiglottis; instead, this role is typically associated with sensory receptors in the respiratory tract.

3. What is the purpose of the first paragraph in relation to the second paragraph?

• A. The first paragraph serves as a cause and the second paragraph serves as an effect.
• B. The first paragraph serves as a contrast to the second.
• C. The first paragraph is a description for the argument in the second paragraph.
• D. The first and second paragraphs are merely presented in a sequence.

Correct answer: A

Rationale: The first paragraph introduces the general characteristics of insects and their ability to live both on land and in the air, setting the stage for discussing specific examples in the second paragraph. The second paragraph then delves into examples of insects that transition from living underwater to the aerial phase, establishing a cause-and-effect relationship between the general concept introduced in the first paragraph and the specific examples in the second paragraph. Choice A is correct because the first paragraph gives the cause (insects being creatures of land and air) and the second paragraph provides the effect (specific examples of insects transitioning between water and air). Choices B, C, and D are incorrect because they do not accurately describe the relationship between the two paragraphs as cause and effect.

4. What is the product of the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH)?

• A. NaCl + H2O
• B. NaOH + HCl
• C. Na2Cl + H2O
• D. NaClO3 + H2

Correct answer: A

Rationale: When hydrochloric acid (HCl) reacts with sodium hydroxide (NaOH), it forms sodium chloride (NaCl) and water (H2O) according to the following chemical equation: HCl + NaOH -> NaCl + H2O. Therefore, the correct answer is NaCl + H2O (Choice A). This reaction is a classic acid-base neutralization reaction where the acid (HCl) reacts with the base (NaOH) to form a salt (NaCl) and water (H2O). Choice B (NaOH + HCl) is incorrect because the order of the reactants matters in a chemical reaction, and in this case, HCl is the acid reacting with NaOH. Choices C (Na2Cl + H2O) and D (NaClO3 + H2) are incorrect because they do not represent the products of the reaction between HCl and NaOH as per the balanced chemical equation.

5. What are the two layers of the spinal cord?

• A. White matter and grey matter
• B. Epithelial and connective tissue
• C. Adipose and muscular tissue
• D. Dermis and hypodermis

Correct answer: A

Rationale: The correct answer is A: White matter and grey matter. The spinal cord is composed of an exterior layer of white matter, which surrounds an interior core of grey matter. White matter consists mainly of myelinated axons, while grey matter contains cell bodies, dendrites, and unmyelinated axons. White matter is responsible for transmitting nerve signals up and down the spinal cord, while grey matter processes sensory information and initiates motor commands. The other choices (B, C, D) are incorrect as they do not represent the anatomical layers of the spinal cord. Epithelial and connective tissue, adipose and muscular tissue, dermis, and hypodermis are not the layers of the spinal cord but are found in other parts of the body such as skin and organs.

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