Nursing Elites

1. Which vitamin is essential for collagen production, a key component of connective tissues?

• A. Vitamin A
• B. Vitamin C
• C. Vitamin D
• D. Vitamin E

Correct answer: B

Rationale: Vitamin C is essential for collagen production, a key component of connective tissues. Collagen, a crucial protein, provides structure and strength to various body tissues, such as skin, tendons, ligaments, and blood vessels. Vitamin C plays a pivotal role in collagen synthesis by aiding in the hydroxylation of proline and lysine residues, which is essential for stabilizing the collagen structure. A deficiency in vitamin C can lead to impaired collagen production, resulting in conditions like scurvy, characterized by weakened connective tissues. Vitamin A (Choice A) is important for vision and immune function but is not directly involved in collagen production. Vitamin D (Choice C) is essential for calcium absorption and bone health but is not primarily responsible for collagen synthesis. Vitamin E (Choice D) acts as an antioxidant, protecting cells from damage, but it is not a key player in collagen production.

2. What is the unit of measurement for power?

• A. Joule (J)
• B. Newton (N)
• C. Watt (W)
• D. Kilogram-meter (kg·m)

Correct answer: C

Rationale: Power is the rate at which work is done or energy is transferred. The unit of measurement for power is the watt (W), named after James Watt, the inventor of the steam engine. The watt is defined as one joule per second, where a joule (J) is the unit of energy. Choice A, Joule (J), is incorrect because a joule is a unit of energy, not power. Choice B, Newton (N), is incorrect as a Newton is a unit of force, not power. Choice D, Kilogram-meter (kg·m), is incorrect as it represents a unit of torque, not power. Therefore, the correct answer is C: Watt (W).

3. Based on the contextual usage of this word, what is the most likely meaning of the prefix ante-?

• A. again
• B. good
• C. before
• D. together

Correct answer: C

Rationale: The prefix 'ante-' is commonly used to refer to something that comes before something else in terms of time, order, or position. In the provided sentence, the antechamber is described as a waiting area 'before' guests were allowed into the main hall. This usage indicates that 'ante-' in this context means 'before.' The other choices are incorrect: 'again' implies repetition, 'good' is unrelated, and 'together' does not fit the context of preceding or coming before something else.

4. Which of the following sentences is a compound sentence?

• A. The sky is clear, and the stars are bright.
• B. Although it was late, he stayed up.
• C. She reads books.
• D. While she reads, she listens to music.

Correct answer: A

Rationale: The correct answer is A. A compound sentence consists of two independent clauses joined by a conjunction or a semicolon. In sentence A, 'The sky is clear' and 'the stars are bright' are two independent clauses joined by the conjunction 'and.'<br>Choice B is a complex sentence as it has a dependent clause ('Although it was late') and an independent clause ('he stayed up').<br>Choice C is a simple sentence with only one subject and one verb.<br>Choice D is a complex sentence with a dependent clause ('While she reads') and an independent clause ('she listens to music').

5. What is the structural and functional unit of the kidney responsible for filtering blood?

• A. Nephron
• B. Ureter
• C. Urethra
• D. Bladder

Correct answer: A

Rationale: The nephron is the correct answer. It is the structural and functional unit of the kidney responsible for filtering blood. The nephron consists of a renal corpuscle (glomerulus and Bowman's capsule) and a renal tubule. Within the nephron, blood is filtered to form urine, which is then carried to the ureter for excretion from the body. Choices B, C, and D are incorrect because the ureter, urethra, and bladder are not involved in the filtration of blood in the kidney. Instead, they are parts of the urinary system responsible for transporting and storing urine.

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