Nursing Elites

1. How many calories are contained in a food that has 15 grams of carbohydrates, 4 grams of protein, and 10 grams of fat?

• A. 106
• B. 124
• C. 166
• D. 202

Correct answer: C

Rationale: To calculate the total calories in a food item, you can use the following conversions: every 1 gram of carbohydrate provides 4 calories, 1 gram of protein provides 4 calories, and 1 gram of fat provides 9 calories. Therefore, for this food item, multiply 15 grams of carbohydrates by 4 calories/gram, 4 grams of protein by 4 calories/gram, and 10 grams of fat by 9 calories/gram. The calculation would be (15 * 4) + (4 * 4) + (10 * 9) = 60 + 16 + 90 = 166 calories. Choice A (106) is incorrect because it does not consider the calories from fat. Choice B (124) is incorrect as it underestimates the calories by not including all macronutrients. Choice D (202) is incorrect as it overestimates the calories by adding up the values incorrectly.

2. What is a major constituent of cell membranes?

• A. cholesterol
• B. phospholipid
• C. saturated
• D. triglyceride

Correct answer: B

Rationale: Phospholipids are a major component of cell membranes, providing structural integrity and facilitating cell signaling. Cholesterol (choice A) is also present in cell membranes but in smaller amounts and plays a different role. Saturated (choice C) and triglyceride (choice D) are not major constituents of cell membranes.

3. Being in contact with reality and the environment is a function of the:

• A. conscience
• B. ego
• C. id
• D. super ego

Correct answer: B

Rationale: Being in contact with reality and the environment is a function of the ego. The ego is responsible for mediating between the id's basic desires, the superego's idealistic standards, and the real world. The conscience (not listed as a choice) is related to feelings of guilt or moral responsibility. The id represents primal instincts, and the superego represents the internalized ideals and moral standards.

4. Each statement is true of proteins, except one. Which is the exception?

• A. Proteins are composed of building blocks called amino acids
• B. The classification of the 20 common amino acids is based on the properties of their side chains
• C. The general structure of an amino acid varies considerably
• D. Amino acids polymerize to form long chains called polypeptides

Correct answer: B

Rationale: The correct answer is B. The classification of the 20 common amino acids is not based on the properties of their side chains, but rather on the structure of their amino and carboxyl groups. These groups are consistent among all amino acids, while the side chains, also known as R groups, are what vary and give each amino acid its unique properties. Choice A is correct because proteins are indeed composed of amino acids. Choice C is incorrect because while the side chains of amino acids can vary, the general structure of an amino acid - a central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a side chain - is consistent. Choice D is correct because amino acids do polymerize to form long chains called polypeptides, which can then fold into complex shapes to form proteins.

5. A nurse is planning care for a client who has ascites secondary to liver disease. Which of the following interventions should the nurse include in the plan of care?

• A. Reduce complex carbohydrates to 30% of total calories.
• B. Restrict protein intake to less than 0.8 g/kg/day.
• C. Decrease daily caloric intake by 20%.
• D. Limit sodium to 2000 mg or less per day.

Correct answer: D

Rationale: The correct answer is to limit sodium to 2000 mg or less per day. Ascites, which is the abnormal accumulation of fluid in the abdominal cavity, is commonly associated with liver disease. Limiting sodium intake helps manage fluid retention by reducing the fluid accumulation in the abdomen. Choices A, B, and C are incorrect because reducing complex carbohydrates, restricting protein intake, or decreasing caloric intake are not the primary interventions for managing ascites in liver disease.

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