Nursing Elites

1. Sebaceous glands, located in the dermis, secrete an oily substance called:

• A. Sweat
• B. Sebum
• C. Cerumen
• D. Mucus

Correct answer: B

Rationale: Sebaceous glands are responsible for secreting an oily substance called sebum, not sweat, cerumen, or mucus. Sebum plays a vital role in lubricating and waterproofing the skin and hair, preventing them from drying out. Sweat glands produce sweat to regulate body temperature. Cerumen is the medical term for earwax, produced by ceruminous glands in the ear canal, while mucus is a slimy substance that protects and lubricates body tissues. Therefore, the correct answer is B: Sebum, as it is the oily substance secreted by sebaceous glands.

2. She is a gifted pianist, although she's struggling with the piece for her upcoming concert.

• A. Inappropriate transition word choice
• B. Poor diction
• C. Tense disagreement
• D. Incomplete sentence

Correct answer: C

Rationale: The correct answer is C because there is a tense disagreement in the sentence. The use of 'was' (past tense) and 'she's' (contraction of 'she is' present tense) creates an inconsistency in the verb tense. The sentence should maintain consistency either in past tense ('She was a gifted pianist, although she struggled with the piece for her upcoming concert') or present tense ('She is a gifted pianist, although she's struggling with the piece for her upcoming concert'). Choices A, B, and D are incorrect as the issue in the sentence is related to verb tense disagreement, not transition words, diction, or sentence completeness.

3. What happens to the internal energy of a system when it performs work on its surroundings?

• A. It increases.
• B. It decreases.
• C. It remains the same.
• D. Insufficient information.

Correct answer: B

Rationale: When a system performs work on its surroundings, it loses energy in the form of work done. This results in a decrease in the internal energy of the system. Work done by the system is considered as negative work, leading to a decrease in internal energy. Therefore, the correct answer is that the internal energy decreases when a system performs work on its surroundings. Choice A is incorrect as the internal energy decreases, not increases. Choice C is incorrect because the internal energy changes due to the work done. Choice D is incorrect because the information provided is sufficient to determine the change in internal energy.

4. Which of the following statements about heat engines is true?

• A. Heat engines are the most common type of engine.
• B. Pneumatic and hydraulic motors are both types of electric engines.
• C. The three types of engines are heat engines, electric engines, and pneumatic motors.
• D. Heat engines can be broken down into combustion and non-combustion engines.

Correct answer: D

Rationale: The statement that 'Heat engines can be broken down into combustion and non-combustion engines' is correct. Heat engines can indeed be categorized into combustion engines, where fuel combustion occurs, and non-combustion engines, such as steam engines, where heat is applied without combustion. This categorization helps in understanding the different mechanisms and types of heat engines available. Choices A, B, and C are incorrect. Choice A is incorrect as heat engines are not the most common type of engine; internal combustion engines are more prevalent. Choice B is incorrect as pneumatic and hydraulic motors are not types of electric engines, but rather different systems that use gas (pneumatic) or liquid (hydraulic) to transmit power. Choice C is incorrect as it lists electric engines, which are not a primary classification of engines like heat engines, but rather a type of engine that uses electricity to operate.

5. In which of the following sentences does the word 'part' function as an adjective?

• A. The part Brian was asked to play required many hours of research.
• B. She parts ways with the woodsman at the end of the book.
• C. The entire team played a part in the success of the project.
• D. Ronaldo is part Irish on his mother's side of the family.

Correct answer: D

Rationale: In sentence D, the word 'part' functions as an adjective to modify the noun 'Irish.' It describes the Irish heritage of Ronaldo. The other choices use 'part' as a noun. In sentence A, 'part' is a noun referring to a role in a play. In sentence B, 'parts' is a verb indicating separating or dividing. In sentence C, 'part' is a noun referring to a contribution or role in the success of a project.

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