which of the following is a function of carbohydrates in the body

HESI LPN

LPN Nutrition Practice Test

1. Which of the following is a function of carbohydrates in the body?

A. They provide insulation and support for organs.
B. They help regulate body temperature.
C. They serve as the body's main structural components.
D. They are the body's primary source of energy.

Correct answer: D

Rationale: The correct answer is D. Carbohydrates are the body's primary source of energy, fueling daily activities and bodily functions. Choice A is incorrect because insulation and organ support are primarily provided by adipose tissue and structural proteins, not carbohydrates. Choice B is incorrect because the regulation of body temperature is mainly controlled by processes like sweating and shivering, not carbohydrates. Choice C is incorrect because structural components like proteins are responsible for building tissues and organs, not carbohydrates.

2. Which statement best describes the composition of most foods?

A. Most foods contain a mixture of the three energy nutrients, with one or two predominating.
B. Foods do not typically contain equal amounts of the three energy nutrients.
C. Most foods contain mixtures of the three energy nutrients, although only one or two may predominate.
D. Most foods contain all three energy nutrients in varying amounts.

Correct answer: C

Rationale: The correct answer is C. Most foods contain a mixture of the three energy nutrients (carbohydrates, proteins, fats), with one or two predominating. Choice A is correct because most foods do contain a combination of energy nutrients, with one or two types usually being predominant. Choice B is incorrect as foods typically do not contain equal amounts of carbohydrates, proteins, and fats. Choice D is incorrect because most foods contain all three energy nutrients, not just one or two types.

3. What is the primary goal in managing a child with asthma?

A. Prevent triggering asthma attacks
B. Avoid triggering asthma attacks
C. Administer corticosteroids
D. Increase physical activity

Correct answer: B

Rationale: The primary goal in managing a child with asthma is to avoid triggering asthma attacks. This involves managing allergens, ensuring proper medication use, and creating an asthma action plan. Choice A is incorrect because the goal is to avoid triggering asthma attacks, not necessarily to prevent recurrent infections. Choice C is incorrect as corticosteroids are a treatment option but not the primary goal of asthma management. Choice D is incorrect because although physical activity is important, the primary goal is to prevent asthma attacks and manage symptoms effectively.

4. What is the most common symptom of appendicitis in children?

A. Vomiting and diarrhea
B. Fever and abdominal pain
C. Rash and joint pain
D. Difficulty breathing

Correct answer: B

Rationale: The correct answer is B: Fever and abdominal pain. In children, appendicitis commonly presents with fever and abdominal pain. The pain typically begins around the umbilicus and then moves to the lower right quadrant. Choices A, C, and D are incorrect because vomiting and diarrhea, rash and joint pain, and difficulty breathing are not typical symptoms of appendicitis in children.

5. What is a common sign of dehydration in infants?

A. Decreased urination
B. Dry mouth and lips
C. Increased appetite
D. Normal skin turgor

Correct answer: B

Rationale: Dry mouth and lips are common signs of dehydration in infants. When an infant is dehydrated, the body conserves water, resulting in less urine production and concentrated urine. This leads to decreased frequency of urination rather than frequent urination, making choice A incorrect. Choice C, increased appetite, is not typically associated with dehydration in infants but rather with normal growth and development. Normal skin turgor, as mentioned in choice D, is a sign of hydration and not dehydration, making it an incorrect choice. Therefore, the correct answer is B, dry mouth and lips, which indicate a need for fluid replacement.