Nokea
In which condition is underconsumption of fat not a concern?
- A. Malabsorption syndromes
- B. Cystic fibrosis
- C. AIDS
- D. Hypertension
Correct Answer: D
Rationale: The correct answer is D, Hypertension. Hypertension is not typically associated with underconsumption of fat; instead, it is more related to the consumption of excess fat, especially saturated and trans fats, which can contribute to increased blood pressure. Malabsorption syndromes, cystic fibrosis, and AIDS are conditions where underconsumption of fat can be a concern due to various reasons such as malabsorption issues, pancreatic insufficiency, or increased energy needs.
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The nurse is working with a patient who recently had a stroke. The patient frequently chokes and coughs when eating and is having difficulty feeding herself. What is the best way to ensure adequate nutrition?
- A. to have an aide feed her at each meal
- B. to ask a family member to assist during meals
- C. to provide tube feedings for the patient
- D. to initiate TPN for the patient
Correct Answer: C
Rationale: The best way to ensure adequate nutrition for a stroke patient who frequently chokes and coughs when eating and has difficulty feeding herself is to provide tube feedings. Tube feedings are a safe and effective method to deliver nutrition directly to the stomach or intestines, bypassing the swallowing mechanism, reducing the risk of aspiration. Having an aide feed her each meal (choice A) may not address the underlying issue of swallowing difficulty and aspiration risk. Asking a family member to be present at each meal (choice B) does not provide a definitive solution to the patient's nutritional needs. Placing the patient on total parenteral nutrition (TPN) (choice D) is a more invasive and typically reserved for patients who cannot tolerate enteral feedings or have non-functional gastrointestinal tracts.
Cariogenic foods and beverages, which are fermentable carbohydrates that can be metabolized by oral bacteria, reduce salivary pH to what critical level?
- A. 5
- B. 5.5
- C. 6
- D. 6.5
Correct Answer: B
Rationale: Cariogenic foods and beverages lower the pH level in the mouth to below 5.5. This is a critical threshold, as it is the point at which enamel begins to demineralize, increasing the risk of dental caries. Therefore, options 'A', 'C', and 'D' are incorrect. Although a pH level of 5, as suggested by option 'A', would indeed lead to demineralization, it's not the threshold value. The pH levels suggested by options 'C' and 'D' (6 and 6.5, respectively) are higher than the critical value of 5.5, which means they would not initiate enamel demineralization and the subsequent risk of dental caries.
Which food is most likely to be included in a low-fiber diet?
- A. Broccoli
- B. Ripe Bananas
- C. Onions
- D. Whole-Grain Bread
Correct Answer: B
Rationale: A low-fiber diet is generally recommended for individuals who need to restrict their intake of dietary fiber for health reasons. Ripe bananas are low in fiber and easy to digest, making them an ideal choice for a low-fiber diet. On the other hand, broccoli, onions, and whole-grain bread are high in fiber. Therefore, they are less suitable for a low-fiber diet as they could cause digestive discomfort or exacerbate certain health conditions. Ripe bananas, being low in fiber, are the most appropriate choice for a low-fiber diet.
Which biomolecule is responsible for the storage and transfer of genetic information?
- A. Carbohydrates
- B. Proteins
- C. Lipids
- D. Nucleic acids
Correct Answer: D
Rationale: Nucleic acids, such as DNA and RNA, are the biomolecules responsible for storing and transferring genetic information within cells. Carbohydrates, proteins, and lipids do not have this specific function. Carbohydrates are mainly used for energy storage, structural support, and cellular communication. Proteins are involved in various cellular functions such as enzymatic reactions, structural support, and signaling. Lipids play roles in energy storage, cell membrane structure, and signaling.
Which lipid contains 3 fatty acids?
- A. cholesterol
- B. phospholipid
- C. saturated
- D. triglyceride
Correct Answer: D
Rationale: The correct answer is 'D. triglyceride.' Triglycerides are composed of one glycerol molecule and three fatty acids, making them the primary form of stored fat in the body. Cholesterol (A) is a different type of lipid, phospholipids (B) have two fatty acids, and 'saturated' (C) refers to the structure of fatty acids, not a specific lipid containing 3 fatty acids.