Nokea
Which mineral-containing amino acids help to form the shape of proteins?
- A. phosphorus
- B. sulfur
- C. selenium
- D. iron
Correct Answer: B
Rationale: The correct answer is B: sulfur. Sulfur-containing amino acids like cysteine and methionine play a crucial role in forming disulfide bonds within proteins. These bonds are essential for the proper folding and structural stability of proteins. Phosphorus (choice A), selenium (choice C), and iron (choice D) do not directly contribute to shaping proteins through bond formation.
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What describes a criterion used to diagnose diabetes?
- A. a plasma glucose concentration of 100 mg/dL or higher after a fast of at least 12 hours
- B. a casual blood sample of 200 mg/dL or higher in a person with classic symptoms
- C. a plasma glucose concentration measured two hours after a 200-gram glucose load is 400 mg/dL or higher
- D. a HbA1C higher than 5 percent
Correct Answer: B
Rationale: A casual blood sample of 200 mg/dL or higher in a person with classic symptoms is a diagnostic criterion for diabetes. This choice aligns with the typical clinical presentation of diabetes and is a key diagnostic indicator. Choices A, C, and D do not accurately reflect the established criteria for diagnosing diabetes, making them incorrect. Choice A pertains to a fasting plasma glucose level, Choice C involves a glucose challenge test, and Choice D refers to HbA1C levels, which are used for monitoring blood sugar control over time, not for diagnosing diabetes.
Which food has the highest calcium content?
- A. soy products
- B. milk
- C. cereal grains
- D. dark green vegetables
Correct Answer: B
Rationale: The correct answer is B, milk. Milk is known for being one of the best dietary sources of calcium, essential for bone health and various bodily functions. Soy products, cereal grains, and dark green vegetables are good sources of calcium as well, but milk generally has a higher calcium content compared to these options.
A condition that is conducive to the development of dental caries is said to be _____.
- A. periodontal
- B. cariogenic
- C. gingival
- D. bacteriophilic
Correct Answer: B
Rationale: A condition that is conducive to the development of dental caries is described as cariogenic. Cariogenic refers to foods or conditions that promote the development of dental caries by providing an environment for bacteria to thrive and produce acids that erode tooth enamel.
Choice A, periodontal, is incorrect as it relates to the supporting structures of the teeth rather than the development of dental caries. Choice C, gingival, is also incorrect as it pertains to the gums rather than the causation of dental caries. Choice D, bacteriophilic, is not the term commonly used to describe conditions that lead to dental caries, making it an incorrect choice.
Metabolic control is especially important for women with gestational diabetes to ensure the infant does not develop:
- A. microsomia
- B. macrosomia
- C. type 1 diabetes
- D. type 2 diabetes
Correct Answer: B
Rationale: Metabolic control is crucial for women with gestational diabetes to prevent the development of macrosomia, which is characterized by an abnormally large baby. This condition poses risks such as birth injuries and necessitates careful management of blood sugar levels. Microsomia is not a known term related to this context. Type 1 and type 2 diabetes are not conditions the infant would develop as a result of gestational diabetes in the mother.
What food is most likely a source of trans fats in the diet?
- A. red meat
- B. peanut oil
- C. corn chips
- D. salmon
Correct Answer: C
Rationale: The correct answer is C: corn chips. Corn chips, especially those processed and fried, are a common source of trans fats, which are associated with an increased risk of heart disease. Red meat (choice A) and salmon (choice D) do not typically contain trans fats unless they are processed or cooked in trans fat-containing oils. Peanut oil (choice B) can be a healthier option compared to trans fat-containing oils.