Nokea
Lynn is an older adult who lives alone and has requested advice on how to eat a nutritious diet as cheaply as possible. One useful, practical tip for Lynn might be to _____.
- A. buy just a few pieces of fresh fruit at a time, in different stages of ripeness
- B. choose small boxes of frozen vegetables instead of large bags
- C. purchase pre-sliced or shredded cheese rather than whole pieces
- D. avoid buying certain foods in bulk, such as beans or dried legumes
Correct Answer: A
Rationale: Buying a few pieces of fresh fruit at different stages of ripeness ensures that Lynn will have ripe fruit available over several days, reducing waste and cost. Choice B focuses on frozen vegetables but doesn't address the variety and ripeness factor like Choice A. Choice C is about cheese, which may not be as essential for a nutritious diet compared to fresh fruit. Choice D suggests avoiding certain foods in bulk, which might not be as relevant for maintaining a nutritious diet economically as the strategy in Choice A.
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Each is a characteristic manifestation of necrotizing ulcerative gingivitis (NUG), except one. Which is the exception?
- A. Gingival erythema
- B. Necrosis of interdental papilla
- C. Marasmus
- D. Metallic taste and foul odor
Correct Answer: C
Rationale: The correct answer is C: Marasmus. Marasmus is a form of severe malnutrition and is not a direct manifestation of necrotizing ulcerative gingivitis (NUG). Choices A, B, and D are all characteristic manifestations of NUG. Gingival erythema, necrosis of interdental papilla, and metallic taste with foul odor are commonly associated with NUG due to the inflammatory and necrotic nature of the condition.
Which vitamin is crucial for collagen synthesis and wound healing?
- A. Vitamin C
- B. Vitamin D
- C. Vitamin E
- D. Vitamin K
Correct Answer: A
Rationale: The correct answer is Vitamin C. Vitamin C is crucial for collagen synthesis, a process important for wound healing. Collagen is a key protein that helps in wound repair and tissue strength. Vitamin D is primarily known for its role in calcium absorption and bone health, not directly related to collagen synthesis. Vitamin E is an antioxidant that helps protect cells from damage but is not directly involved in collagen synthesis. Vitamin K is essential for blood clotting but does not play a major role in collagen synthesis for wound healing.
What is a major feature of the therapeutic lifestyle changes (TLC) recommended for the treatment of high blood cholesterol?
- A. Avoiding all foods that contain cholesterol
- B. Reducing sodium intake to less than 2 g/day
- C. Limiting total fat intake to less than 30% of energy intake
- D. Limiting saturated fat intake to less than 7% of energy intake
Correct Answer: D
Rationale: The correct answer is D, 'Limiting saturated fat intake to less than 7% of energy intake.' This is a central feature of the therapeutic lifestyle changes (TLC) recommended for treating high blood cholesterol. Saturated fats can increase low-density lipoprotein (LDL) cholesterol, a significant risk factor for heart disease. Choice A is incorrect because while it is recommended to limit cholesterol intake, it's not suggested to avoid all foods containing cholesterol entirely in the TLC. Choice B is also incorrect as although reducing sodium intake is beneficial for controlling blood pressure, it's not specifically targeted in the TLC for managing high cholesterol. Lastly, while limiting total fat intake is a healthy guideline, it's not as specific or effective as limiting saturated fat intake, making choice C also incorrect.
Which of the following nutrients deficiency may lead to a diabetes-like condition?
- A. chromium
- B. iron
- C. molybdenum
- D. selenium
Correct Answer: A
Rationale: Chromium is essential for proper glucose metabolism. A deficiency in chromium can result in insulin resistance, which shares similarities with diabetes. Iron, molybdenum, and selenium deficiencies do not directly lead to a diabetes-like condition. Iron deficiency causes anemia, molybdenum deficiency is rare and can lead to specific metabolic issues, and selenium deficiency may result in thyroid problems but not a diabetes-like condition.
Reducing the amount of trans fat in the diet is an effective method of decreasing the risk of CHD. Which food is most likely a source of trans fat?
- A. hot dogs
- B. whole milk
- C. fatty fish
- D. potato chips
Correct Answer: D
Rationale: The correct answer is D: potato chips. Potato chips, especially when fried in hydrogenated oils, are a common source of trans fats, which are linked to an increased risk of coronary heart disease (CHD). Hot dogs (choice A) can also contain trans fats if made with processed meats and added fats. Whole milk (choice B) and fatty fish (choice C) do not typically contain trans fats, making them less likely sources compared to potato chips.