ATI RN
ATI Nutrition Proctored Exam 2023 Test Bank
1. Which vitamin's recommended dietary allowance (RDA) is significantly increased during pregnancy?
- A. Folate
- B. Thiamine (B1)
- C. Riboflavin (B2)
- D. Niacin (B3)
Correct answer: A
Rationale: The correct answer is A: Folate. During pregnancy, the recommended dietary allowance (RDA) for folate is significantly increased to support fetal development and prevent neural tube defects and other congenital anomalies. Folate plays a crucial role in DNA synthesis and cell growth, making it essential for the rapidly dividing cells of the developing fetus. Thiamine (B1), Riboflavin (B2), and Niacin (B3) are important vitamins, but their RDAs do not undergo as significant an increase during pregnancy as folate's RDA does.
2. How would protein deficiency likely affect dental tissues?
- A. Decreased resistance to dental caries
- B. Increased tooth size
- C. Delayed tooth development
- D. Increased enamel mineralization
Correct answer: C
Rationale: Protein deficiency can lead to delayed tooth development as the body may not have enough resources to form teeth properly. This delay can make the teeth more susceptible to dental issues due to incomplete formation. Choices A, B, and D are incorrect. Decreased resistance to dental caries is more related to factors like poor oral hygiene and sugary diets, increased tooth size is not a common effect of protein deficiency on dental tissues, and increased enamel mineralization is not typically associated with protein deficiency.
3. What is the initial major sign of acute renal failure?
- A. Oliguria
- B. Hematuria
- C. Proteinuria
- D. Glycosuria
Correct answer: A
Rationale: Oliguria, or reduced urine output, is often the initial major sign of acute renal failure. This reduction in urine output indicates that the kidneys are not functioning properly. Hematuria (blood in urine), proteinuria (presence of protein in urine), and glycosuria (presence of glucose in urine) are not typically the initial major signs of acute renal failure. While they may be present in certain conditions, oliguria is the most common and critical indicator of acute renal failure.
4. Which of the following is not a desirable blood lipid value?
- A. low total cholesterol
- B. high LDL
- C. high HDL
- D. low blood triglycerides
Correct answer: B
Rationale: The correct answer is B. High levels of LDL (low-density lipoprotein) cholesterol are undesirable as they are associated with an increased risk of cardiovascular disease. Therefore, low total cholesterol (choice A), high HDL (choice C), and low blood triglycerides (choice D) are considered desirable blood lipid values. Low total cholesterol is beneficial as high levels can increase the risk of heart disease. High HDL cholesterol is considered good as it helps remove LDL cholesterol from the arteries. Low blood triglycerides are also preferred as high levels are associated with an increased risk of heart disease.
5. What is the primary function of antioxidants in the diet?
- A. Provide energy
- B. Support muscle growth
- C. Neutralize free radicals
- D. Increase blood sugar
Correct answer: C
Rationale: The primary function of antioxidants in the diet is to neutralize free radicals. Free radicals can cause cellular damage, leading to various chronic diseases. Antioxidants help combat this oxidative stress by neutralizing free radicals. Choices A, B, and D are incorrect because antioxidants do not provide energy, support muscle growth, or increase blood sugar; their main role is in combating oxidative stress.
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