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 nurse is caring for an 8-month-old infant who screams when the parent leaves the room. The parent begins to cry and says, 'I don't understand why my child is so upset. I've never seen my child act this way around others before.' Which of the following statements should the nurse make?

• A. This is a normal, expected reaction for a child of this age.
• B. This is a response to an overstimulating environment.
• C. This is a common reaction to an overexposure to caregivers.
• D. This is a typical reaction for a child who is sick.

Correct answer: A

Rationale: The correct answer is 'This is a normal, expected reaction for a child of this age.' Separation anxiety typically peaks around 8-10 months of age, leading to distress when separated from caregivers. Choice B is incorrect because the infant's behavior is more likely due to separation anxiety rather than overstimulation. Choice C is incorrect as the infant's behavior is not related to overexposure to caregivers but rather a natural developmental stage. Choice D is incorrect as the infant's behavior is not indicative of illness but rather a normal emotional response.

3. When injecting subcutaneous injection in an obese patient, It should be angled at around:

• A. 45 °
• B. 90 °
• C. 180 °
• D. Parallel to the skin

Correct answer: B

Rationale: Nursing interventions should be grounded in a deep understanding of the physiological processes involved, ensuring that care provided is both effective and efficient.

4. Plant stanols and sterols help to lower LDL cholesterol and are often added to which food product?

• A. margarine
• B. milk
• C. cereal
• D. yogurt

Correct answer: A

Rationale: Plant stanols and sterols are commonly added to margarine to help lower LDL cholesterol levels. Margarine acts as a vehicle for these compounds, making it easier for individuals to incorporate them into their daily diet. While milk, cereal, and yogurt are healthy food options, they are not typically enriched with plant stanols and sterols for cholesterol-lowering purposes, making them less likely candidates as the correct answer.

5. Because of increasing cases of fluorosis, low levels of fluoride are added to commercial infant formula. Breast milk provides low levels of fluoride.

• A. Both statements are true
• B. Both statements are false
• C. The first statement is true; the second is false
• D. The first statement is false; the second is true

Correct answer: D

Rationale: The first statement is false; fluoride is not added to infant formulas due to the risk of fluorosis. The second statement is true; breast milk contains low levels of fluoride.

Similar Questions