gram for gram which class of nutrient provides the most energy
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HESI PN Nutrition Practice Exam

1. Gram for gram, which class of nutrient provides the most energy?

Correct answer: A

Rationale: The correct answer is fats. Fats provide 9 kilocalories per gram, which is more energy-dense compared to proteins and carbohydrates. While proteins and carbohydrates provide 4 kilocalories per gram, fats provide more than twice the energy, making them the most energy-providing nutrient. Alcohols are not considered essential nutrients and do not provide energy for the body, unlike fats, proteins, and carbohydrates. Therefore, fats are the correct answer for the most energy-providing nutrient.

2. What should be included in the medical management of a sickle cell crisis?

Correct answer: B

Rationale: The correct answer is B: Adequate hydration and pain management. During a sickle cell crisis, it is essential to provide hydration to prevent vaso-occlusive events and manage pain effectively with analgesics. Adequate hydration helps maintain blood flow and prevent further sickling of red blood cells. Pain management is crucial to alleviate the severe pain associated with sickle cell crises. Options A, C, and D are incorrect. Providing information for parents on home care (Option A) may be important for ongoing management but is not specific to an acute crisis. Iron supplements (Option C) are not typically indicated during a sickle cell crisis. Adequate oxygenation and factor VIII (Option D) are not primary interventions for managing a sickle cell crisis; instead, oxygen therapy may be considered in severe cases, and factor VIII is not a standard treatment for sickle cell disease.

3. What is the term for the amount of heat required to raise the temperature of one kilogram of water by one degree Celsius?

Correct answer: D

Rationale: The correct answer is D, Kilocalorie. The term kilocalorie, often referred to as a calorie, is the amount of heat required to raise the temperature of one kilogram of water by one degree Celsius. While Choice A, Calorie, is technically correct, it is not the most specific term for the described amount of heat. Choice B, Joule, is a unit of energy but not specifically related to the amount of heat required to raise the temperature of water. Choice C, Kilojoule, is also a unit of energy but not the precise term for the heat required to raise the temperature of water by one degree Celsius.

4. Non-nutrient substances found in plant foods that may demonstrate biological activity in the body are commonly known as ___

Correct answer: C

Rationale: Phytochemicals are bioactive compounds found in plant foods that may affect health. They are known for their potential health benefits, such as antioxidant and anti-inflammatory properties. Choices A, B, and D are incorrect. 'Bioenhancements' is not a term used to describe non-nutrient substances in plant foods. 'Inorganic fibers' do not refer to bioactive compounds found in plants. 'Phytoactive chemicals' is not a commonly used term in nutrition science to describe these compounds.

5. How should a healthcare professional respond to a parent concerned about their child's weight gain?

Correct answer: A

Rationale: When a parent expresses concern about their child's weight gain, the most appropriate response is to provide guidance on healthy eating and physical activity. This approach promotes healthy weight management and overall well-being. Suggesting restrictive dieting (Choice B) can be harmful, especially for children, as it may lead to unhealthy relationships with food and potential nutritional deficiencies. Recommending increased caloric intake (Choice C) without proper assessment and guidance can exacerbate the issue. Avoiding discussing the issue (Choice D) neglects a critical opportunity to address the parent's concerns and support the child's health.

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