Nursing Elites

1. What is the function of the kidneys in the urinary system?

• A. To filter blood and remove waste
• B. To produce red blood cells
• C. To regulate blood pressure
• D. To absorb water

Correct answer: A

Rationale: The correct answer is A: 'To filter blood and remove waste.' The kidneys play a crucial role in the urinary system by filtering blood to remove waste products and excess fluids, which are then excreted as urine. This process helps maintain the body's internal balance by regulating electrolyte levels and controlling blood pressure. Choices B, C, and D are incorrect because the kidneys do not produce red blood cells (bone marrow does), regulate blood pressure directly (although they indirectly influence it through the renin-angiotensin-aldosterone system), or absorb water (they regulate water balance but do not absorb water).

2. Select the phrase in the sentence that is not used correctly. Until his trip to Puerto Rico, Javier had never seen his ancestral home.

• A. Until his trip
• B. had never
• C. never seen
• D. his ancestral home

Correct answer: C

Rationale: The phrase 'never seen' in the sentence is not used correctly. The correct phrase should be 'never seen,' which is the past participle form of the verb 'see.' In this context, 'seen' is the correct past participle to use with 'had never.' Choice A, 'Until his trip,' is correct as it sets the time frame. Choice B, 'had never,' is also correct as it indicates the past perfect tense. Choice D, 'his ancestral home,' is also used correctly as it refers to the place Javier had never seen before.

3. How many ounces are in 3/4 pints?

• A. 12 ounces
• B. 16 ounces
• C. 14 ounces
• D. 10 ounces

Correct answer: A

Rationale: To find the number of ounces in 3/4 pints, we need to know that 1 pint is equal to 16 ounces. Therefore, 3/4 of a pint would be 3/4 * 16 = 12 ounces. The correct answer is 12 ounces because 3/4 pints is equivalent to 12 ounces. Choices B, C, and D are incorrect as they do not accurately calculate the conversion from pints to ounces.

4. Choose the meaning of the word 'sanctioned' in the following sentence: 'The professor sanctioned our field trip to the chemistry lab.'

• A. Organized
• B. Deterred
• C. Neglected
• D. Authorized

Correct answer: D

Rationale: In this context, the word 'sanctioned' means to authorize or approve. The sentence indicates that the professor gave permission for the field trip to the chemistry lab, which aligns with the meaning of 'authorized.' Choices A, B, and C are incorrect. 'Organized' does not fit the context as the sentence is about granting approval, not arranging. 'Deterred' means to discourage, which is the opposite of what the professor did. 'Neglected' means failed to care for or pay attention to, which is unrelated to the professor approving the field trip.

5. A system undergoes an isobaric process (constant pressure). In this process, the work done (W) by the system is:

• A. Zero, if the volume change (ΔV) is zero.
• B. Positive and equal to the pressure multiplied by the volume change (W = PΔV).
• C. Negative and equal to the pressure multiplied by the volume change.
• D. Independent of the pressure or volume change.

Correct answer: B

Rationale: In an isobaric process (constant pressure), the work done is given by the formula W = PΔV, where P is the pressure and ΔV is the change in volume. If the volume does not change, the work done is zero, not negative. Choice A is incorrect as it states the work done is zero when the volume change is zero, which is the correct condition for zero work. Choice C is incorrect as it incorrectly suggests that the work done is negative in an isobaric process. Choice D is incorrect as the work done in an isobaric process is indeed dependent on the volume change and pressure.

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