Nursing Elites

1. What are the fluid-filled sacs that cushion the brain within the skull called?

• A. Meninges
• B. Cerebrospinal fluid
• C. Dura mater
• D. Arachnoid mater

Correct answer: B

Rationale: The correct answer is B, cerebrospinal fluid. Cerebrospinal fluid acts as a shock absorber, protecting the brain from impact and providing nutrients to brain cells. Meninges are the three protective layers of tissue that surround the brain and spinal cord. Dura mater and arachnoid mater are specific layers of the meninges, not the fluid-filled sacs that cushion the brain.

2. Which orbital can hold a maximum of 8 electrons?

• A. s orbital
• B. p orbital
• C. d orbital
• D. f orbital

Correct answer: B

Rationale: The correct answer is the p orbital. Each p orbital can hold a maximum of 6 electrons (2 electrons in each of the 3 p orbitals), totaling 18 possible electrons when considering all three p orbitals. The s orbital can hold a maximum of 2 electrons, the d orbital can hold a maximum of 10 electrons, and the f orbital can hold a maximum of 14 electrons. Therefore, the p orbital is the orbital that can hold a maximum of 8 electrons, making it the correct choice.

3. What is the control, if any, in this experiment?

• A. There is no control in this experiment
• B. The control is the water
• C. The control is the diet soda
• D. The control is the amount of sunlight provided to the plants

Correct answer: B

Rationale: The correct answer is B: 'The control is the water.' In a scientific experiment, the control group is used as a baseline comparison to evaluate the effects of the variables being tested. Here, the water serves as the control group against which the effects of other substances like diet soda or different amounts of sunlight can be compared. Choice A is incorrect as every experiment should have a control group for comparison. Choice C and D are incorrect as they are not the standard control in this scenario.

4. Which of the following quotes offers the best summary for the instructor's motive in sending the email to the students?

• A. By now, many of you have probably seen your grade and are a little concerned. (And if you're not concerned, you should be-at least a bit!)
• B. With each class comes a new challenge, however, and as any good instructor will tell you, sometimes the original plan has to change.
• C. The purpose of the group project is to allow students to work together and arrive at a stronger response than if each worked individually.
• D. At the beginning of the semester, I informed the class that I have a strict grading policy and that all scores will stand unquestioned.

Correct answer: B

Rationale: The correct answer is B. This quote best captures the instructor's motive in the email to adjust the original plan to better support the students. Dr. Edwards is offering alternative options, including extra credit projects and a group project, to help students improve their scores after the essay exam. These options aim to provide students with opportunities to enhance their grades and succeed in the course. Choice A focuses on students feeling concerned about their grades but does not address the instructor's motive. Choice C highlights the purpose of the group project but does not capture the instructor's motive for sending the email. Choice D emphasizes the instructor's strict grading policy but does not explain the motive behind offering alternative ways to improve scores.

5. How is power defined in terms of physics?

• A. The rate at which work is done
• B. The amount of force applied
• C. The distance an object travels
• D. The potential energy of an object

Correct answer: A

Rationale: In physics, power is defined as the rate at which work is done, which refers to the amount of energy transferred or converted per unit time. Choice B, 'The amount of force applied,' is incorrect as power is related to work done, not just force. Choice C, 'The distance an object travels,' is not the definition of power but rather relates to displacement or distance. Choice D, 'The potential energy of an object,' is not the correct definition of power; potential energy is different from power. Therefore, the correct definition of power in physics is the rate at which work is done.

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