Nursing Elites

1. Which of the following menu items fulfills her dietary requirements?

• A. Tofu-mushroom-spinach lasagna
• B. Veggie burger on a whole-grain bun
• C. Salmon with cream sauce
• D. Stuffed baked potato with vegetable soup

Correct answer: A

Rationale: The correct answer is A, the tofu-mushroom-spinach lasagna. Mirella is an ovo-lacto vegetarian, meaning she eats eggs and dairy but avoids animal flesh. This dish meets her dietary requirements as it is a vegetarian option that contains tofu and cheese for protein. Additionally, since Mirella has a wheat allergy, she can choose a lasagna recipe with alternative noodles or omit noodles altogether. Choice B, the veggie burger, may contain wheat in the bun, which is not suitable for Mirella. Choice C, salmon with cream sauce, contains animal flesh and is not vegetarian. Choice D, stuffed baked potato with vegetable soup, may include wheat products in the soup, making it unsuitable for Mirella's wheat allergy.

2. Nuclear fusion powers the sun and other stars. What is the main obstacle to achieving controlled nuclear fusion on Earth for energy production?

• A. Lack of suitable materials to handle high temperatures and pressures.
• B. Limited availability of fusion fuels like deuterium and tritium.
• C. Difficulty in containing the plasma where fusion occurs.
• D. All of the above

Correct answer: D

Rationale: The main obstacle to achieving controlled nuclear fusion on Earth for energy production involves a combination of factors. A) Lack of suitable materials to handle high temperatures and pressures is a significant challenge due to the extreme conditions required for fusion reactions. B) Limited availability of fusion fuels like deuterium and tritium can pose a constraint on the scalability and sustainability of fusion energy. C) Difficulty in containing the plasma where fusion occurs is another critical issue as plasma instabilities and heat losses can hinder the efficiency of fusion reactions. Therefore, all of the options (A, B, and C) contribute to the challenges in achieving controlled nuclear fusion for energy production on Earth.

3. Which of the following provides the best definition for the prefix trans- as used in the sentence?

• A. Across
• B. Beautiful
• C. Change
• D. Different

Correct answer: A

Rationale: The prefix trans- means 'across,' as in words like translucent, which allows light to pass through. 'Beautiful' (Choice B), 'Change' (Choice C), and 'Different' (Choice D) do not accurately capture the meaning of the prefix trans- in this context. Therefore, 'Across' is the correct definition.

4. What is the primary function of nephrons?

• A. Store urine
• B. Filter blood and remove waste products
• C. Produce hormones
• D. Control blood pressure

Correct answer: B

Rationale: Nephrons are the functional units of the kidneys responsible for filtering blood to remove waste products, excess ions, and water. This process leads to the formation of urine, aiding in maintaining the body's fluid and electrolyte balance. The primary function of nephrons is not to store urine but to filter blood and eliminate waste products. Choice C, 'Produce hormones,' is incorrect as nephrons primarily focus on filtration rather than hormone production. Choice D, 'Control blood pressure,' is also incorrect as while the kidneys do play a role in regulating blood pressure, it is not the primary function of nephrons within the kidneys.

5. Why is the stratified squamous epithelium found in the skin adapted for?

• A. Absorption
• B. Secretion
• C. Protection
• D. Gas exchange

Correct answer: C

Rationale: The stratified squamous epithelium found in the skin is adapted for protection. This type of epithelium forms a tough, protective barrier against physical, chemical, and biological damage. Its multiple layers of cells help prevent the entry of pathogens and reduce water loss from the body, making it essential for shielding the underlying tissues. Choices A, B, and D are incorrect because stratified squamous epithelium is not specialized for absorption, secretion, or gas exchange. Instead, its primary function is to protect the underlying tissues and organs from external damage and dehydration.

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