Nursing Elites

1. Which vitamin plays a crucial role in calcium absorption in the small intestine?

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

Correct answer: C

Rationale: The correct answer is Vitamin D. Vitamin D plays a crucial role in calcium absorption in the small intestine by enhancing the absorption of calcium and phosphorus. This helps in regulating the levels of these minerals in the body, which are essential for maintaining healthy bones. Vitamin A (Choice A) is important for vision and immune function, but it is not directly related to calcium absorption. Vitamin C (Choice B) is primarily known for its role in collagen synthesis and antioxidant functions, not calcium absorption. Vitamin E (Choice D) acts as an antioxidant and is not directly involved in calcium absorption in the small intestine.

2. Which of the following statements most effectively revises this introduction about Mary Shelley: Mary Shelley conceived of Dr. Frankenstein and the hideous monster he created, which helped the English novelist to make an immeasurable impact on literature and popular culture?

• A. English novelist Mary Shelley had an immeasurable impact on literature and popular culture when she conceived of Dr. Frankenstein and the hideous monster he created.
• B. Dr. Frankenstein created a hideous monster, and they were conceived by English novelist Mary Shelley, who had an immeasurable impact on literature and popular culture.
• C. English novelist Mary Shelley conceived of Dr. Frankenstein and the hideous monster he created and had an immeasurable impact on literature and popular culture.
• D. Novelist Mary Shelley from England had an immeasurable impact on literature and popular culture when she conceived of Dr. Frankenstein and the hideous monster he created.

Correct answer: A

Rationale: Option A most effectively revises the introduction by clearly stating that English novelist Mary Shelley had an immeasurable impact on literature and popular culture through her conception of Dr. Frankenstein and the hideous monster he created. It maintains the original idea while improving clarity and coherence. Option B introduces confusion by implying that Dr. Frankenstein created the hideous monster when it was actually Mary Shelley who conceived both characters. Option C lacks the necessary conjunctions to make the sentence flow smoothly. Option D unnecessarily specifies the country of origin for Mary Shelley and does not maintain the focus on her impact on literature and popular culture.

3. What is the primary function of the digestive system?

• A. To break down food into nutrients
• B. To absorb oxygen
• C. To produce energy
• D. To regulate body temperature

Correct answer: A

Rationale: The correct answer is A: 'To break down food into nutrients.' The primary function of the digestive system is to break down food into nutrients that can be absorbed by the body for energy, growth, and repair. The digestive system is not responsible for absorbing oxygen (Choice B), as that is the role of the respiratory system. While the digestion process does release energy from nutrients, the primary function is not to produce energy (Choice C), but rather to extract nutrients for energy production. Regulating body temperature (Choice D) is primarily handled by the thermoregulatory mechanisms in the body, such as the skin and sweat glands, not the digestive system.

4. If the word antibacterial describes a substance that kills bacteria, you can infer that the prefix anti-means:

• A. Original to
• B. Against
• C. Before
• D. Under

Correct answer: B

Rationale: The correct answer is 'B: Against.' The prefix 'anti-' means 'against,' as seen in the word 'antibacterial,' which denotes something that acts against bacteria. Choice A, 'Original to,' is incorrect as the prefix 'anti-' does not imply 'original to.' Choice C, 'Before,' is incorrect as 'anti-' does not signify 'before' but rather 'against.' Choice D, 'Under,' is also incorrect as 'anti-' does not convey the idea of being 'under' but rather 'against' in this context.

5. How does RNA polymerase differ from DNA polymerase?

• A. Both enzymes are identical in function and structure.
• B. RNA polymerase does not require a primer to initiate RNA synthesis.
• C. RNA polymerase can synthesize both RNA and DNA.
• D. RNA polymerase can only synthesize RNA, unlike DNA polymerase.

Correct answer: B

Rationale: Rationale: A) This statement is incorrect. RNA polymerase and DNA polymerase are not identical in function and structure. They have different roles in the cell. B) This statement is correct. Unlike DNA polymerase, RNA polymerase does not require a primer to initiate RNA synthesis. RNA polymerase can start the synthesis of RNA de novo. C) This statement is incorrect. RNA polymerase is specialized for synthesizing RNA, not DNA. DNA polymerase is responsible for synthesizing DNA. D) This statement is correct. RNA polymerase can only synthesize RNA, while DNA polymerase is responsible for synthesizing DNA.

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