Nursing Elites

1. 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.

2. A client who is experiencing dumping syndrome following gastric surgery is receiving education from a nurse. Which of the following statements by the client indicates an understanding of the teaching?

• A. I should drink additional fluids with my meals.
• B. I should eat high-fiber snacks between meals.
• C. I should eat a protein source with each meal.
• D. I can have caffeinated beverages in small amounts.

Correct answer: C

Rationale: The correct answer is C. Eating a protein source with each meal can help manage dumping syndrome by slowing gastric emptying and reducing symptoms. This choice is the most appropriate as it directly addresses a key dietary recommendation for dumping syndrome. Choices A, B, and D are incorrect because drinking additional fluids with meals, eating high-fiber snacks between meals, and consuming caffeinated beverages can exacerbate dumping syndrome symptoms by increasing gastric emptying and worsening the condition.

3. In the US, low iron intake is often associated with?

• A. low intake of fruits and vegetables
• B. pregnancy
• C. high sugar and fat intakes
• D. high protein intake

Correct answer: C

Rationale: Diets high in sugar and fat often lack essential nutrients like iron, leading to a risk of iron deficiency anemia, especially when iron-rich foods are not consumed adequately.

4. For a patient with celiac disease, which dietary modification is necessary?

• A. Increase protein intake
• B. Avoid gluten
• C. Increase dairy intake
• D. Avoid lactose

Correct answer: B

Rationale: The correct answer is B: Avoid gluten. Patients with celiac disease have an immune reaction to gluten, a protein found in wheat, barley, and rye. Therefore, it is crucial for individuals with celiac disease to avoid gluten-containing products. Increasing protein intake (Choice A) is not specifically necessary for celiac disease management. Increasing dairy intake (Choice C) is unrelated to the dietary requirements of individuals with celiac disease. Avoiding lactose (Choice D) is relevant for individuals with lactose intolerance, not celiac disease. Therefore, the only necessary modification for a patient with celiac disease is to avoid gluten.

5. Cancers that arise from epithelial tissues are known as:

• A. Leukemias
• B. Myelomas
• C. Carcinomas
• D. Sarcomas

Correct answer: C

Rationale: The correct answer is C: Carcinomas. Carcinomas are cancers that originate from epithelial tissues, which are the tissues lining the surfaces of organs and structures in the body. Leukemias (choice A) are cancers of the blood-forming cells, not epithelial tissues. Myelomas (choice B) are cancers that develop in plasma cells in the bone marrow, not epithelial tissues. Sarcomas (choice D) are cancers that arise from connective tissues like bone, cartilage, or muscle, not epithelial tissues. Therefore, choices A, B, and D are incorrect in the context of cancers originating from epithelial tissues.

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