Nursing Elites

1. What do hair follicles house in the skin?

• A. Blood vessels (Blood vessels are not housed within hair follicles)
• B. Nerve endings (Nerve endings are present but not housed within hair follicles)
• C. Hair shafts and hair roots
• D. Sebaceous glands (These glands are often attached to hair follicles)

Correct answer: C

Rationale: Hair follicles are structures in the skin that contain the hair shaft (the visible part of the hair) and the hair root (the part of the hair beneath the skin). The hair shaft is the portion of the hair that is visible above the skin, while the hair root is the part that extends below the surface into the follicle. Therefore, the correct answer is that hair follicles house the hair shafts and hair roots. Choices A, B, and D are incorrect because blood vessels are not housed within hair follicles, nerve endings are present but not housed within hair follicles, and sebaceous glands are often attached to hair follicles but not housed within them.

2. Solve for x: 3(x - 5) = 2(x + 3)

• A. x = 3
• B. x = 6
• C. x = 9
• D. x = 12

Correct answer: A

Rationale: To solve the equation 3(x - 5) = 2(x + 3) for x, start by distributing the terms inside the parentheses. This gives you 3x - 15 = 2x + 6. Next, combine like terms by moving all terms with x to one side and the constants to the other side. Subtracting 2x from both sides gives x - 15 = 6. Finally, adding 15 to both sides results in x = 21. Therefore, the correct answer is A: x = 3. Choices B, C, and D are incorrect as they do not result from the correct calculations of the equation.

3. At which step in the scientific method might a scientist create a model?

• A. Hypothesis
• B. Data analysis
• C. Experimentation
• D. Conclusion

Correct answer: A

Rationale: In the scientific method, scientists often create models during the hypothesis stage. Creating models at this stage helps visualize or simulate ideas before proceeding to experimentation and data analysis. Models are valuable tools that allow scientists to conceptualize and test their ideas before conducting experiments to gather data and draw conclusions. Therefore, the correct answer is A. Choice B, data analysis, occurs after experiments have been conducted and data has been collected, making it an incorrect choice. Choice C, experimentation, involves conducting tests and observations based on the hypothesis, but the creation of models typically happens before this stage. Choice D, conclusion, is the final step where scientists interpret the results and draw implications, making it an inappropriate step for creating a model.

4. Which of the following bones belongs to the category of long bones?

• A. Femur
• B. Ribs and cranial bones
• C. Sesamoid
• D. Vertebrae and hip bones

Correct answer: A

Rationale: The correct answer is A: Femur. Long bones are characterized by their elongated shape, with examples including the femur, humerus, and tibia. These bones are essential for support, movement, and bone marrow production. Choice B, 'Ribs and cranial bones,' consists of flat bones, not long bones. Choice C, 'Sesamoid,' refers to small bones embedded within tendons and do not fall under the category of long bones. Choice D, 'Vertebrae and hip bones,' includes irregular bones that provide structural support and protection for vital organs, but they are not classified as long bones.

5. What does potency refer to in regards to cells?

• A. The cell's ability to survive
• B. The cell's ability to move
• C. The cell's ability to divide rapidly
• D. The cell's ability to differentiate

Correct answer: D

Rationale: Potency refers to a cell's potential to differentiate into different cell types. It is not related to the cell's ability to survive (Choice A), move (Choice B), or divide rapidly (Choice C). Stem cells, for example, exhibit varying degrees of potency based on their capacity to give rise to various cell types. Therefore, the correct answer is D as it accurately defines the concept of potency in cells.

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