Nursing Elites

1. What is the law that states energy can neither be created nor destroyed?

• A. Law of Conservation of Matter
• B. Law of Conservation of Energy
• C. Law of Universal Gravitation
• D. Law of Inertia

Correct answer: B

Rationale: Law of Conservation of Energy. This law applies to both chemical and physical processes, including chemical reactions.

2. Two cars with different masses collide head-on. Which car experiences a greater change in momentum?

• A. The car with the larger mass
• B. The car with the smaller mass
• C. Both cars experience the same change in momentum
• D. It depends on the initial velocities of the cars

Correct answer: B

Rationale: The car with the smaller mass. Although momentum is conserved in the collision, the change in momentum is inversely proportional to mass. Therefore, the car with the smaller mass will experience a larger relative change.

3. Which of the following minerals is important for bone health and is stored in bones by the skeletal system?

• A. Iron
• B. Sodium
• C. Calcium
• D. Magnesium

Correct answer: C

Rationale: The correct answer is C: Calcium. Calcium is essential for maintaining strong and healthy bones. It is a key mineral stored in bones by the skeletal system, where it provides structural support and strength. Adequate calcium intake is crucial for preventing bone diseases like osteoporosis and ensuring proper bone formation and density. Iron (A), Sodium (B), and Magnesium (D) are important minerals for various bodily functions but are not primarily responsible for bone health and storage in bones by the skeletal system.

4. Which verb tense best fits the blank: "By next month, she _____ the project for a year."

• A. will have been working on
• B. will work on
• C. has been working on
• D. had worked on

Correct answer: C

Rationale: The sentence emphasizes the completed duration of the project by next month, requiring the present perfect continuous tense.

5. Which part of the brain is responsible for coordinating various sensory inputs, regulating sleep, and maintaining wakefulness?

• A. Cerebrum
• B. Hypothalamus
• C. Medulla oblongata
• D. Reticular formation

Correct answer: d

Rationale: The correct answer is D: Reticular formation. The reticular formation is a network of neurons located in the brainstem that plays a crucial role in regulating consciousness, arousal, and sleep-wake transitions. It receives sensory inputs from various parts of the body and helps coordinate these inputs to maintain wakefulness and alertness. While the cerebrum is responsible for higher cognitive functions and the hypothalamus regulates various physiological processes like body temperature and hunger, the reticular formation specifically focuses on integrating sensory information and controlling wakefulness.

6. Stretch marks occur when

• A. The dermis layer becomes inflamed
• B. The dermis layer becomes inflamed
• C. The dermis layer tears due to rapid stretching
• D. Sebaceous glands become clogged

Correct answer: C

Rationale: Stretch marks occur when the dermis layer tears due to rapid stretching. During periods of rapid growth or weight gain, the skin may stretch beyond its capacity, causing the dermis layer to tear and resulting in the formation of stretch marks. Inflammation or clogged sebaceous glands do not directly cause stretch marks, making options A, B, and D incorrect. It is important to understand the physiological process behind stretch marks to identify the correct answer.

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