how much energy is required to raise the temperature of one kilogram liter of water 1c
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Nutrition Final Exam

1. How much energy is required to raise the temperature of one kilogram of water by 1°C?

Correct answer: C

Rationale: The correct answer is 1 kilocalorie. This is the amount of energy required to raise the temperature of 1 kilogram of water by 1°C. Choice A (10 calories) and Choice D (10 kilocalories) are incorrect as they do not represent the correct unit of measurement for this specific scenario. Choice B (100 calories) is also incorrect as it overestimates the amount of energy required. The specific heat capacity of water is approximately 1 calorie/gram °C, which means that 1 kilogram (1000 grams) of water requires 1 kilocalorie (1000 calories) to raise its temperature by 1°C.

2. What is the primary source of energy for the brain and nervous system?

Correct answer: D

Rationale: Glucose is the correct answer as it is the primary source of energy for the brain and nervous system. The brain relies heavily on glucose to function optimally. While protein and fat play essential roles in the body, they are not the primary sources of energy for the brain and nervous system. Carbohydrates, on the other hand, are broken down into glucose, which is then used as fuel by the brain and nervous system.

3. What is an important aspect of managing a child with asthma in a school setting?

Correct answer: B

Rationale: The correct answer is B: Ensuring access to emergency medications. In a school setting, it is crucial to have emergency medications available for a child with asthma in case of an asthma attack. This helps in managing asthma effectively and promptly. Choices A, C, and D are incorrect because limiting physical activity, reducing the number of classes attended, and avoiding interaction with other students are not recommended strategies for managing asthma in a school setting. Encouraging physical activity, ensuring regular attendance, and promoting social interactions are important for the overall well-being of a child with asthma.

4. What is a common sign of a respiratory infection in infants?

Correct answer: B

Rationale: Rapid breathing is a common sign of a respiratory infection in infants. When infants have a respiratory infection, their breathing may become rapid as their body tries to get more oxygen. This symptom is often seen alongside cough and fever. Increased appetite (Choice A) is not typically associated with respiratory infections but can be seen in other conditions. Decreased urine output (Choice C) is more indicative of dehydration or kidney issues rather than a respiratory infection. Lethargy (Choice D) can be a symptom of various illnesses but is not as specific to respiratory infections as rapid breathing.

5. What term describes foods that contain non-nutrient substances whose known action in the body is to promote well-being to a greater extent than that contributed by the food's nutrients?

Correct answer: C

Rationale: Functional foods are specifically designed to promote health benefits beyond basic nutrition. Fortified foods (choice A) are those with added nutrients that are not originally present, enriched foods (choice B) have nutrients added back that were lost during processing, and health-enhancing foods (choice D) is a vague and less specific term compared to functional foods.

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