Nursing Elites

1. Select the correct verbs to complete the following sentences: Where _________ everyone? What ___________ they doing?

• A. is, is
• B. is, are
• C. are, is
• D. are, are

Correct answer: B

Rationale: The correct answer is B: 'is, are'. 'Where is everyone?' requires the singular verb 'is' to agree with 'everyone'. 'What are they doing?' requires the plural verb 'are' to match the plural subject 'they'. Option A 'is, is', does not provide correct subject-verb agreement in the second sentence. Option C 'are, is' and Option D 'are, are' do not maintain consistent subject-verb agreement within the sentences.

2. Which of the following serves as a standard or series of standards for comparing the results of an experiment?

• A. A control
• B. A variable
• C. A constant
• D. Collected data

Correct answer: A

Rationale: A control is a standard used to compare the outcomes of an experiment and is crucial for determining the effect of the variables being tested. It helps isolate and measure the impact of the independent variable by providing a baseline for comparison. While variables may change, constants remain consistent, and collected data is the information obtained from the experiment. A control specifically serves as the standard for comparison in an experiment, making it the correct choice. Variables, although important, are what are being altered and tested in an experiment, constants are factors that are kept consistent throughout the experiment, and collected data is the information gathered from the experiment, none of which specifically serve as the standard for comparison.

3. How are the motor pathways of the ANS arranged?

• A. Single neuron from CNS to target organ
• B. Two neurons, a pre-ganglionic and post-ganglionic neuron
• C. Multiple neurons from CNS to target organ
• D. Single neuron from CNS to peripheral ganglia

Correct answer: B

Rationale: The correct answer is B. The motor pathways of the autonomic nervous system (ANS) are organized with two neurons: a pre-ganglionic neuron that transmits the signal from the central nervous system (CNS) to a ganglion, and a post-ganglionic neuron that conveys the signal from the ganglion to the target organ. This dual-neuron pathway enables the integration and modulation of signals before reaching the target organ, allowing for a more sophisticated and adaptable control system. Choice A is incorrect as it describes a single neuron pathway, which is not characteristic of ANS motor pathways. Choice C is incorrect as it suggests multiple neurons from the CNS to the target organ, which is not the typical arrangement. Choice D is incorrect as it describes a single neuron pathway from the CNS to peripheral ganglia, which does not account for the ganglionic transmission in ANS motor pathways.

4. The lake was clear and shimmering, and it was such a friendly day; therefore, he dove right in. Which of the following describes the grammar problem in the sentence above?

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

Correct answer: A

Rationale: The correct answer is A: Ambiguous word choice. In this sentence, the word 'friendly' is ambiguous and does not clearly convey the intended meaning. The context of the sentence suggests that 'friendly' is used inappropriately to describe a day, making the sentence unclear. Choices B, C, and D are incorrect because the issue in the sentence does not relate to transition words, tense disagreement, or an incomplete sentence.

5. Positron emission tomography (PET) scans utilize a key property of positrons for medical imaging. What is this property?

• A. High mass
• B. Positive charge
• C. Extreme stability
• D. Identical behavior to electrons

Correct answer: B

Rationale: Positron emission tomography (PET) scans utilize the property of positrons having a positive charge. Positrons are the antimatter counterpart of electrons, having the same mass but opposite charge. When a positron collides with an electron, they annihilate each other, producing gamma rays that can be detected by the PET scanner to create images of the body's internal structures and functions. Choice A is incorrect because positrons have the same mass as electrons. Choice C is incorrect as positrons are not extremely stable due to their tendency to annihilate when they encounter electrons. Choice D is incorrect as positrons exhibit different behavior than electrons due to their opposite charges.

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