Nursing Elites

1. What is the primary function of the endocrine system?

• A. To fight infection
• B. To transport oxygen
• C. To regulate body functions through hormones
• D. To break down food

Correct answer: C

Rationale: The correct answer is C: 'To regulate body functions through hormones.' The endocrine system is responsible for producing and secreting hormones that help regulate various body functions such as growth, metabolism, reproduction, and mood. It does not primarily function to fight infection (A), transport oxygen (B), or break down food (D). While the immune system fights infection, the respiratory system transports oxygen, and the digestive system breaks down food, the main role of the endocrine system is to maintain homeostasis by coordinating and controlling bodily functions through the release of hormones.

2. Which vitamin plays a vital role in immune function?

• A. Vitamin A
• B. Vitamin B12
• C. Vitamin D
• D. Vitamin E

Correct answer: C

Rationale: Vitamin D is the correct answer. It plays a vital role in immune function by regulating the immune system and enhancing the pathogen-fighting effects of monocytes and macrophages. Deficiency in Vitamin D has been linked to increased susceptibility to infections and autoimmune diseases, highlighting its importance in maintaining a healthy immune response. Vitamin A (Choice A) is essential for vision and skin health but is not primarily known for its role in immune function. Vitamin B12 (Choice B) is important for red blood cell formation and neurological function, not specifically immune function. Vitamin E (Choice D) acts as an antioxidant and is beneficial for skin health and cell function, but it is not primarily associated with immune system support.

3. While studying vocabulary, a student notices that the words circumference, circumnavigate, and circumstance all begin with the prefix 'circum'. The student uses her knowledge of affixes to infer that all of these words share what related meaning?

• A. Around, surrounding
• B. Travel, transport
• C. Size, measurement
• D. Area, location

Correct answer: A

Rationale: The correct answer is A: 'Around, surrounding.' The prefix 'circum-' commonly means 'around' or 'surrounding,' as observed in words like circumference (the distance around a circle), circumnavigate (to sail or travel around something), and circumstance (a condition surrounding or related to an event). Choices B, C, and D are incorrect because the shared meaning among these words is related to being around or surrounding, not travel, transport, size, measurement, area, or location.

4. What is the major difference between somatic and germline mutations?

• A. Somatic mutations usually benefit the individual while germline mutations usually harm them.
• B. Since germline mutations only affect one cell, they are less noticeable than the rapidly dividing somatic cells.
• C. Somatic mutations are not expressed for several generations, but germline mutations are expressed immediately.
• D. Germline mutations are usually inherited while somatic mutations will affect only the individual.

Correct answer: D

Rationale: The major difference between somatic and germline mutations is that germline mutations are usually inherited and can be passed on to offspring, while somatic mutations occur in non-reproductive cells and only affect the individual in which they occur. This means that germline mutations have the potential to be present in future generations, while somatic mutations do not.

5. A student is starting a research assignment on Japanese-American internment camps during World War II, but she is unsure of how to gather relevant resources. Which of the following would be the most helpful advice for the student?

• A. Conduct a broad internet search to get a wide view of the subject.
• B. Consult an American history textbook.
• C. Find websites about Japanese-American culture encompassing various aspects such as fashion and politics.
• D. Locate texts in the library related to World War II in America and look for references to internment camps in the index.

Correct answer: D

Rationale: The most effective way for the student to gather detailed and relevant resources for the research assignment on Japanese-American internment camps during World War II would be to search for specific references in library texts related to World War II. Option A suggesting a broad internet search might provide too much irrelevant information. Option B, consulting an American history textbook, may not offer in-depth coverage of internment camps specifically. Option C, focusing on Japanese culture aspects like fashion and politics, is not directly related to the research topic on internment camps.

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