how many minerals are known to be essential for human nutrition
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HESI PN Nutrition Practice Exam

1. How many minerals are known to be essential for human nutrition?

Correct answer: C

Rationale: There are 16 essential minerals required for human nutrition. These minerals include calcium, potassium, iron, and others. Choice A (8) is incorrect as it underestimates the number of essential minerals. Choice B (12) is also incorrect as it does not encompass the full count of essential minerals. Choice D (20) is incorrect as it overestimates the number of essential minerals.

2. When an increase in exercise is accompanied by a decrease in body weight, it is an example of what?

Correct answer: C

Rationale: When an increase in exercise is accompanied by a decrease in body weight, it demonstrates a negative correlation. This means that as one variable (exercise) increases, the other variable (body weight) decreases. Choice A, 'variable effect,' is vague and does not accurately describe the relationship between exercise and body weight. Choice B, 'positive correlation,' is incorrect because in a positive correlation, both variables would increase or decrease together. Choice D, 'randomization effect,' is unrelated to the scenario described.

3. Which measure best describes the amounts of nutrients that should be consumed by the population?

Correct answer: D

Rationale: The Recommended Dietary Allowances (RDAs) are the best measure to describe the amounts of nutrients that should be consumed by the population. RDAs represent the average daily intake level that meets the nutrient requirements of nearly all (97-98%) healthy individuals in a particular life stage and gender group. Choice A, the Dietary Reference Intakes, provide a set of nutrient intake values but do not specifically address the average daily amount of a nutrient considered adequate for practically all individuals. Choice B, the Tolerable Upper Intake levels, focus on the maximum daily amount of a nutrient deemed safe for most healthy people, not the average daily amount needed. Choice C, the Estimated Average Requirements, reflect the average daily amount of a nutrient needed by half of the healthy individuals, which is not as comprehensive as the RDAs that cater to nearly all healthy people.

4. How should a healthcare provider address concerns about a child’s developmental milestones?

Correct answer: B

Rationale: Correct Answer: Providing resources for early intervention services is crucial for addressing developmental concerns and supporting the child's growth and development. Early intervention is key to improving outcomes. Recommending delaying intervention until school age (Choice A) is not advised as addressing issues early leads to better results. Suggesting dietary changes (Choice C) is not the primary approach to addressing developmental milestones. Avoiding further assessment (Choice D) can impede the timely identification and management of developmental delays.

5. What is an important aspect of care for a child with congenital heart disease?

Correct answer: D

Rationale: Monitoring growth and development is crucial for children with congenital heart disease to ensure they are meeting developmental milestones and managing the disease effectively. This helps healthcare providers assess the child's overall health, detect any potential issues early, and adjust treatment plans accordingly. Restricting physical activity may not be necessary for all children with congenital heart disease and should be determined by their healthcare team based on individual needs. Increasing fluid intake and administering high doses of vitamins may not be directly related to managing congenital heart disease and should be guided by specific recommendations from healthcare providers.

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