ATI RN
ATI RN Nutrition Online Practice 2019
1. Match protease with its digestive action:
- A. breaks down carbs
- B. breaks down proteins
- C. breaks down lipids
- D. helps fat digestion
Correct answer: B
Rationale: Proteases are enzymes that break down proteins into smaller peptides and amino acids.
2. What differentiates one amino acid from another?
- A. The amine group
- B. The acid group
- C. The side chain
- D. None of the above
Correct answer: C
Rationale: The side chain, also known as the R group, is what differentiates one amino acid from another. It imparts unique properties to each amino acid, thereby influencing their roles and functions in proteins. The amine group (Choice A) and the acid group (Choice B) are components of all amino acids and do not cause the differences among various amino acids. Choice D is incorrect as it suggests that none of the given options account for the differences, which is not true as the side chain does.
3. What nutrition-related side effect is most likely to occur after head and neck surgery for cancer treatment?
- A. Aspiration
- B. Acid reflux
- C. Dumping syndrome
- D. Diarrhea
Correct answer: A
Rationale: The most likely nutrition-related side effect after head and neck surgery for cancer treatment is aspiration. This is due to changes in swallowing mechanics, which can cause food or liquids to be inhaled into the lungs. While acid reflux, dumping syndrome, and diarrhea are potential side effects related to nutrition, they are not as directly connected to head and neck surgery. Acid reflux is more often related to issues with the lower esophageal sphincter, dumping syndrome is typically a complication of gastric surgery, and diarrhea can have various causes, including certain medications or gastrointestinal illnesses.
4. Age group categories within older adults are classified as 'young old,' 'old,' and 'oldest old,' the latter of which comprises adults aged _____.
- A. 70-80 years
- B. 75-84 years
- C. 80-90 years
- D. 85 years or older
Correct answer: D
Rationale: The 'oldest old' category includes adults aged 85 years or older. This age group faces unique health challenges and requires specialized care. Choices A, B, and C are incorrect as they do not fall within the age range specified for the 'oldest old' category.
5. Which chemical structure is represented by glycerol combined with two fatty acids?
- A. Compound lipids
- B. Monoglycerides
- C. Diglycerides
- D. Structural lipids
Correct answer: C
Rationale: The correct answer is C: Diglycerides. A diglyceride is a glycerol molecule combined with two fatty acids. This is a common form of fat during digestion and absorption. Choice A, Compound lipids, is incorrect because these lipids are composed of simple lipids plus additional compounds, which is not the case with a glycerol molecule combined with two fatty acids. Choice B, Monoglycerides, is incorrect because these are glycerol molecules combined with only one fatty acid, not two. Lastly, choice D, Structural lipids, is incorrect because these are major components of cell membranes and do not directly relate to the combination of glycerol and two fatty acids.
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