Nursing Elites

1. Which of the following is NOT a physiological role of proteins?

• A. Providing resistance to disease
• B. Regulating fluid balance
• C. Repairing tissue
• D. Serving as the primary source of energy

Correct answer: D

Rationale: Proteins play a diverse range of physiological roles in the body, such as providing resistance to disease, regulating fluid balance, and repairing tissues. However, they are not the primary source of energy for the body. Carbohydrates and fats typically fulfill this role. Therefore, choice D is the correct answer, as it is not a function that proteins perform. Conversely, choices A, B, and C are all physiological functions of proteins, making them incorrect responses to this particular question.

2. Which mineral-containing amino acids help to form the shape of proteins?

• A. phosphorus
• B. sulfur
• C. selenium
• D. iron

Correct answer: B

Rationale: The correct answer is B: sulfur. Sulfur-containing amino acids like cysteine and methionine play a crucial role in forming disulfide bonds within proteins. These bonds are essential for the proper folding and structural stability of proteins. Phosphorus (choice A), selenium (choice C), and iron (choice D) do not directly contribute to shaping proteins through bond formation.

3. In which of the following conditions does a person need to sit, stand, or use multiple pillows when lying down?

• A. Orthopnea
• B. Dyspnea
• C. Eupnea
• D. Apnea

Correct answer: A

Rationale: The correct answer is Orthopnea. Orthopnea is a medical condition in which a person has difficulty breathing while lying down. To alleviate this difficulty, the person may need to sit, stand, or use multiple pillows. On the other hand, Dyspnea refers to general shortness of breath which is not specifically related to the position of the body. Eupnea is the term for normal, unlabored breathing, and Apnea is a condition characterized by the cessation of breathing. Thus, none of these other choices directly relate to the need to adjust body position or use aids like multiple pillows to breathe comfortably when lying down.

4. Select all that apply. A person who is deficient in vitamin A could consume which of the following to increase vitamin A levels?

• A. cantaloupe
• B. eggs
• C. carrots
• D. all of the above

Correct answer: D

Rationale: Vitamin A can be found in high amounts in foods like cantaloupe, eggs, carrots, and milk, all of which help to maintain healthy vision, skin, and immune function.

5. Which of the following nutrients does not provide energy?

• A. Proteins
• B. Carbohydrates
• C. Fats
• D. Vitamins

Correct answer: D

Rationale: Proteins, carbohydrates, and fats are macronutrients that provide energy in the form of calories when consumed and metabolized by the body. Each gram of protein or carbohydrate provides about 4 calories, and each gram of fat provides about 9 calories. On the other hand, vitamins do not provide energy or calories. They are micronutrients that are essential for various biochemical and physiological processes in the body, including the metabolism of macronutrients. However, they do not contribute directly to the energy supply. Therefore, the correct answer is 'D: Vitamins'. Choices A, B, and C (Proteins, Carbohydrates, and Fats) are incorrect because they are macronutrients that do provide energy/calories when metabolized.

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