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.
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With which of the following should fluoride supplements never be taken?
- A. Water
- B. Juice
- C. Milk
- D. Soda
Correct Answer: C
Rationale: Fluoride supplements should never be taken with milk because the fluoride binds with the calcium in the milk, thereby reducing the effectiveness of the fluoride supplement. Other beverages like water, juice, or soda do not share this characteristic as they do not contain the same level of calcium as milk. The rationale behind choosing milk as the correct answer is that it hampers the effectiveness of fluoride supplements, whereas the other choices do not.
Each of the following is a function of the liver except one. Which one is the exception?
- A. Regulatory control of nutrients in the bloodstream
- B. Conversion of monosaccharides to triglycerides
- C. Breakdown of polysaccharide glycogen into glucose
- D. Oxidation of digestive end products to provide energy
Correct Answer: B
Rationale: The correct answer is B. The liver does not convert monosaccharides to triglycerides; instead, it converts monosaccharides to glucose or glycogen. Choice A is correct because the liver plays a role in regulating the levels of various nutrients in the bloodstream. Choice C is correct as the liver breaks down stored glycogen into glucose to maintain blood sugar levels. Choice D is correct as the liver oxidizes digestive end products to provide energy. Therefore, only choice B is incorrect as the liver does not convert monosaccharides to triglycerides.
Can a person with Celiac disease eat Poptarts that contain gluten?
- A. Yes
- B. No
- C. Only in small quantities
- D. Only if they are gluten-free Poptarts
Correct Answer: B
Rationale: A person with Celiac disease cannot consume Poptarts that contain gluten because gluten is a protein found in wheat, barley, and rye, triggering an autoimmune response in individuals with Celiac disease and damaging their small intestine. Even small quantities of gluten can lead to this harmful response, making choices 'A' and 'C' incorrect. While gluten-free Poptarts may be suitable for individuals with Celiac disease, regular Poptarts containing gluten are not safe for consumption by them, rendering choice 'D' incorrect as well.
A breastfeeding mother complains that she missed her son's last two feedings and now her breasts have become full, hard, and uncomfortable. This condition is known as _____.
- A. mastitis
- B. engorgement
- C. letdown
- D. galactorrhea
Correct Answer: B
Rationale: Engorgement occurs when the breasts become overly full, leading to discomfort and sometimes difficulty with latching. It can be relieved by feeding or expressing milk. Mastitis, choice A, is characterized by breast inflammation usually caused by an infection. Letdown, choice C, refers to the release of milk from the breast. Galactorrhea, choice D, is the spontaneous flow of milk from the breast unassociated with childbirth or nursing.
Although a balanced diet is essential for tissue healing and repair, which of the following should the dental hygienist identify as the nutrient of highest priority for a patient with gingivitis or periodontal disease?
- A. Carbohydrates
- B. Vitamin C
- C. Vitamin D
- D. Monosaccharides
Correct Answer: B
Rationale: Vitamin C is crucial for collagen production and connective tissue repair, making it a key nutrient for healing gingival tissues in patients with gingivitis or periodontal disease. Carbohydrates are a source of energy and not directly related to tissue repair. Vitamin D is important for bone health but is not the highest priority for gingival tissue healing. Monosaccharides are simple sugars and not as essential for tissue repair as Vitamin C.