Nokea
The following are all classes of nutrients except:
- A. protein
- B. fat
- C. carbs
- D. phytochemicals
Correct Answer: D
Rationale: Phytochemicals are not considered a class of nutrients. While proteins, fats, and carbohydrates are essential macronutrients providing energy and structural support, phytochemicals are non-nutrient compounds found in plants that offer various health benefits but are not essential for sustaining life like the other three choices. Therefore, the correct answer is D.
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What can be a potential consequence of consuming insufficient fat?
- A. constipation
- B. marasmus
- C. infertility
- D. diverticulitis
Correct Answer: C
Rationale: The correct answer is C. Fat is crucial for the production of hormones, including reproductive hormones. Consuming too little fat can lead to hormonal imbalances, affecting fertility. Choices A, B, and D are incorrect. Constipation is more commonly associated with insufficient fiber intake, marasmus is severe malnutrition due to overall calorie deficiency, and diverticulitis is often related to low fiber intake and not specifically low fat consumption.
An essential nutrient must:
- A. be eaten every day
- B. be obtained by the diet
- C. be water soluble
- D. be eaten at every meal
Correct Answer: B
Rationale: The correct answer is B: 'be obtained by the diet.' Essential nutrients are those that the body cannot synthesize in sufficient quantities and must therefore be obtained through the diet. Choice A is incorrect because not all essential nutrients need to be consumed daily; the frequency of consumption varies. Choice C is incorrect because not all essential nutrients are water-soluble; they can be water-soluble or fat-soluble. Choice D is incorrect because essential nutrients do not need to be consumed at every meal, but rather need to be included in the overall diet regularly.
What does oliguria lead to in patients with acute kidney injury?
- A. Hypophosphatemia and overgrowth of bone tissue
- B. An increase in blood potassium levels due to excessive excretion of parathyroid hormone
- C. Sodium retention and elevated levels of potassium
- D. Edema due to increased urine production
Correct Answer: C
Rationale: In patients with acute kidney injury, oliguria (reduced urine output) often results in sodium retention and hyperkalemia (elevated levels of potassium). This is due to the kidneys' decreased capacity to excrete these substances. Choice A is incorrect because hypophosphatemia and overgrowth of bone tissue are not direct consequences of oliguria in acute kidney injury. Choice B is incorrect because an increase in blood potassium levels is not caused by excessive excretion of parathyroid hormone but rather by decreased excretion of potassium. Choice D is incorrect because edema is not caused by increased urine production but rather by fluid overload due to decreased urine output.
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.
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.