ATI RN
ATI Nutrition Practice A
1. What is the form in which energy from excess intake of proteins, fats, alcohol, and carbohydrates is stored?
- A. Protein
- B. Fat
- C. Carbohydrates
- D. Alcohol
Correct answer: B
Rationale: When the body consumes more energy than it needs, the surplus is stored as fat, regardless of whether the energy source was proteins, fats, alcohol, or carbohydrates. This is why the correct answer is 'Fat'. Other choices are incorrect because, in excess intake situations, the body does not store surplus energy as proteins, carbohydrates, or alcohol.
2. When observing a return demonstration of a colostomy irrigation, you know that more teaching is required if pt:
- A. Lubricates the tip of the catheter prior to inserting into the stoma
- B. Hangs the irrigating bag on the bathroom door cloth hook during fluid insertion
- C. Discontinues the insertion of fluid after only 500 ml of fluid has been instilled
- D. Clamps of the flow of fluid when felling uncomfortable
Correct answer: C
Rationale: Effective nursing care involves comprehensive assessments that address all aspects of a patient's condition, ensuring that interventions are appropriately targeted and outcomes are optimized.
3. Before Dianne performs the formal research study, what do you call the pre-testing, small-scale trial run to determine the effectiveness of data collection and methodological problems that might be encountered?
- A. Sampling
- B. Pre-testing
- C. Pre-Study
- D. Pilot Study
Correct answer: D
Rationale: The correct answer is 'Pilot Study.' A pilot study is a small-scale trial run conducted before the formal research study to identify and address any issues related to data collection and methodology. This helps in determining the effectiveness of the research process and identifying potential problems that may arise. Choice A, 'Sampling,' refers to the process of selecting a subset of individuals from a larger population for research. Choice B, 'Pre-testing,' simply involves testing something before the main testing phase. Choice C, 'Pre-Study,' is not a commonly used term in research methodology and does not specifically refer to the small-scale trial run described in the question.
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. Which type of lipid is solid at room temperature?
- A. Cholesterol
- B. Phospholipid
- C. Saturated fat
- D. Trans fat
Correct answer: C
Rationale: Saturated fats, such as those found in butter and lard, are typically solid at room temperature due to the lack of double bonds, which allows the fat molecules to pack closely together. Cholesterol (Choice A) is a steroid, not a fat, and while it's solid at room temperature, it doesn't fit the general category of 'lipid' in the context of this question. Phospholipids (Choice B) are a major component of all cell membranes and can be both solid and liquid at room temperature depending on their composition. Trans fats (Choice D) can also be solid or liquid at room temperature, but they are not typically referred to as 'lipids' in a general sense.
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