Nursing Elites

1. To the nearest whole number, what is the mass of one mole of water?

• A. 16 g/mol
• B. 18 g/mol
• C. 20 g/mol
• D. 22 g/mol

Correct answer: B

Rationale: The molar mass of water (H₂O) is calculated by adding the atomic masses of two hydrogen atoms (each with a molar mass of approximately 1 g/mol) and one oxygen atom (with a molar mass of approximately 16 g/mol). Therefore, the molar mass of water is approximately 18 g/mol, making choice B the correct answer. Choice A (16 g/mol) is incorrect because it represents the molar mass of oxygen, not water. Choices C (20 g/mol) and D (22 g/mol) are incorrect as they do not correspond to the molar mass of water.

2. What organelle do plant cells have that functions as storage, waste disposal, and protection?

• A. Nucleus
• B. Mitochondria
• C. Vacuoles
• D. Ribosomes

Correct answer: C

Rationale: Correct! Plant cells have vacuoles that serve as storage centers, help in waste disposal by containing and isolating harmful materials, and contribute to protection by storing toxic substances. The other choices are incorrect because the nucleus contains genetic material, mitochondria are responsible for energy production, and ribosomes are involved in protein synthesis.

3. The meteorologist had forecast rain, ____________ Sheila brought her umbrella to work.

• A. Nor
• B. Yet
• C. Because
• D. So

Correct answer: C

Rationale: The sentence implies a cause-and-effect relationship, so 'because' is the appropriate conjunction. 'Nor' is used in negative constructions, 'Yet' indicates contrast, and 'So' is used to show a consequence, none of which fit the context of the sentence.

4. What is the meaning of the word 'admonition' as used in the last paragraph?

• A. Permission
• B. Prescription
• C. Caution
• D. Verdict

Correct answer: C

Rationale: In this context, 'admonition' means a caution or warning, not permission, prescription, or verdict. The excerpt mentions that along with advising the elderly to move slowly and carefully, the CDC also recommends gentle exercise or physical therapy to strengthen muscles and improve balance. This advice aims to reduce the risk of falls and boost the self-esteem of older adults. Therefore, 'admonition' here refers to a precautionary counsel rather than granting permission, prescribing a treatment, or giving a verdict.

5. Which part of the brain controls balance and coordination?

• A. Cerebellum
• B. Cerebrum
• C. Medulla oblongata
• D. Brainstem

Correct answer: A

Rationale: The correct answer is the cerebellum. Located at the back of the brain, the cerebellum plays a crucial role in controlling balance, coordination, and fine motor movements. It receives information from the sensory systems, the spinal cord, and other parts of the brain to coordinate voluntary movements and maintain posture. Damage to the cerebellum can result in issues with balance, coordination, and muscle tone. The cerebrum is responsible for higher brain functions like thinking and problem-solving, the medulla oblongata controls vital autonomic functions like breathing and heartbeat, and the brainstem serves as a pathway for neural fibers traveling to and from the brain.

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