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ATI Nutrition Proctored Exam 2019 Answers
1. How does a nursing infant receive antibodies from its mother?
- A. Through anabolism and catabolism.
- B. Through the absorption of antibodies.
- C. Through the absorption of amino acids and synthesis of antibodies.
- D. Through genetic inheritance.
Correct answer: B
Rationale: A nursing infant receives antibodies from its mother through the absorption of antibodies present in breast milk. Choice A is incorrect as anabolism and catabolism refer to metabolic processes, not the transfer of antibodies. Choice C is incorrect as the infant does not need to synthesize antibodies but directly receives them. Choice D is incorrect because while genetic inheritance plays a role in the immune system, in this case, the direct transfer of antibodies occurs through breast milk.
2. Which of the following is one of the simplest amino acids?
- A. Arginine
- B. Valine
- C. Lysine
- D. Glycine
Correct answer: D
Rationale: The correct answer is Glycine. Glycine is indeed one of the simplest amino acids as it consists of just a hydrogen atom as its side chain. Arginine, Valine, and Lysine are all more complex amino acids compared to Glycine, making them incorrect choices for this question.
3. Which tissue has the highest rate of protein turnover?
- A. Skin
- B. Intestinal mucosa
- C. Muscle
- D. Adipose tissue
Correct answer: B
Rationale: The correct answer is B: Intestinal mucosa. The intestinal mucosa has the highest rate of protein turnover due to its rapid cell renewal. The skin, muscle, and adipose tissue do not exhibit protein turnover rates as high as the intestinal mucosa. Skin cells turnover relatively slower compared to the rapid renewal of intestinal mucosa cells. Muscles have a moderate rate of protein turnover, while adipose tissue has a lower turnover rate compared to the other tissues mentioned.
4. What group makes each amino acid unique?
- A. Radical group
- B. Amino group
- C. Carboxyl group
- D. Peptide bond
Correct answer: A
Rationale: The correct answer is the radical group (R-group) because it is the unique side chain that differentiates each amino acid. The amino group (choice B) and carboxyl group (choice C) are functional groups common to all amino acids but do not make them unique. The peptide bond (choice D) is the bond formed between amino acids in a protein chain, not the group that makes each amino acid unique.
5. The primary responsibility for nutrition care of people in the community belongs to the:
- A. community physician.
- B. public health nurse.
- C. public health nutritionist.
- D. registered dietitian.
Correct answer: C
Rationale: Public health nutritionists work within communities to ensure that populations have access to nutritional resources. They focus on promoting good nutrition, developing programs, and educating the public about healthy eating habits. While community physicians, public health nurses, and registered dietitians may also play roles in promoting nutrition in the community, the primary responsibility for nutrition care typically falls under the purview of public health nutritionists.
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