WGU D440 NUTRITION OBJECTIVE ASSESSMENT FINAL EXAM
AND PRACTICE EXAM NEWEST ACTUAL EXAM COMPLETE 300
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
1. Which of the following macronutrients provides the most concentrated source of
energy per gram?
A) Carbohydrates
B) Proteins
C) Fats
D) Vitamins
E) Water
Correct Answer: C) Fats
Rationale: Fats provide 9 calories per gram, while carbohydrates and proteins both
provide 4 calories per gram. This makes fats the most energy-dense macronutrient.
2. A client is experiencing night blindness. This is most likely a deficiency in which fat-
soluble vitamin?
A) Vitamin D
B) Vitamin A
C) Vitamin E
D) Vitamin K
E) Vitamin C
Correct Answer: B) Vitamin A
Rationale: Vitamin A (retinol) is crucial for vision, particularly in low light. A deficiency
can lead to xerophthalmia, with night blindness as an early symptom.
3. Which of the following is considered a complete protein source?
A) Lentils
B) Peanuts
C) Quinoa
D) Black beans
E) Spinach
Correct Answer: C) Quinoa
Rationale: Complete proteins provide all nine essential amino acids. While most plant
proteins are incomplete, quinoa is one of the few plant-based foods that is a complete
protein. Animal products (meat, dairy, eggs) are also complete proteins.
4. A client is prescribed a low-sodium diet. Which of the following foods should the nurse
advise the client to avoid?
A) Fresh fruits
B) Canned soup
C) Plain baked potato
, D) Unsalted nuts
E) Steamed vegetables
Correct Answer: B) Canned soup
Rationale: Canned soups are typically very high in sodium, making them an important
food to avoid on a low-sodium diet. Fresh fruits, baked potatoes, unsalted nuts, and
steamed vegetables are generally low in sodium.
5. Which of the following is a primary function of carbohydrates in the body?
A) Building and repairing tissues.
B) Long-term energy storage.
C) Providing the body's main source of energy.
D) Regulating body temperature.
E) Transporting oxygen in the blood.
Correct Answer: C) Providing the body's main source of energy.
Rationale: Carbohydrates are the body's preferred and most readily available source of
energy, particularly for the brain and muscles.
6. A nurse is educating a client about increasing fiber intake. Which of the following foods
is a good source of soluble fiber?
A) Wheat bran
B) Celery
C) Oats
D) Brown rice
E) Green beans
Correct Answer: C) Oats
Rationale: Soluble fiber dissolves in water and forms a gel-like substance, which can
help lower cholesterol and regulate blood sugar. Good sources include oats, barley,
legumes, apples, and citrus fruits. Wheat bran is a source of insoluble fiber.
7. A client with osteoporosis is concerned about their calcium intake. Which of the
following foods is a non-dairy source of calcium?
A) Beef
B) Fortified orange juice
C) Chicken breast
D) Bananas
E) Apples
Correct Answer: B) Fortified orange juice
Rationale: While dairy products are excellent sources of calcium, fortified orange juice,
fortified plant milks (e.g., almond, soy), dark leafy greens (e.g., kale, collard greens), and
sardines are good non-dairy sources.
, 8. Which of the following vitamins is primarily responsible for blood clotting?
A) Vitamin A
B) Vitamin B12
C) Vitamin C
D) Vitamin D
E) Vitamin K
Correct Answer: E) Vitamin K
Rationale: Vitamin K is essential for the synthesis of several blood clotting factors in
the liver. A deficiency can lead to impaired clotting and increased bleeding.
9. A client is experiencing symptoms of dehydration. Which of the following is an early
indicator of dehydration?
A) Hypotension
B) Tachycardia
C) Sunken eyes
D) Dry mucous membranes
E) Increased urine output
Correct Answer: B) Tachycardia
Rationale: Tachycardia (increased heart rate) is often one of the earliest physiological
responses to dehydration as the body attempts to maintain cardiac output despite
reduced circulating blood volume. Dry mucous membranes, sunken eyes, and
hypotension are later signs.
10. A client with hypertension is encouraged to follow the DASH (Dietary Approaches to
Stop Hypertension) diet. This diet emphasizes:
A) High-sodium foods and processed meats.
B) Increased intake of red meat and full-fat dairy.
C) Fruits, vegetables, low-fat dairy, and whole grains.
D) Restricting all carbohydrate intake.
E) High intake of sugary beverages.
Correct Answer: C) Fruits, vegetables, low-fat dairy, and whole grains.
Rationale: The DASH diet is rich in potassium, calcium, and magnesium, and low in
sodium and saturated/total fat. It emphasizes fruits, vegetables, low-fat dairy, whole
grains, poultry, fish, and nuts.
11. Which of the following trace minerals is a component of thyroid hormones and essential
for proper thyroid function?
A) Iron
B) Zinc
C) Iodine
D) Selenium
AND PRACTICE EXAM NEWEST ACTUAL EXAM COMPLETE 300
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
1. Which of the following macronutrients provides the most concentrated source of
energy per gram?
A) Carbohydrates
B) Proteins
C) Fats
D) Vitamins
E) Water
Correct Answer: C) Fats
Rationale: Fats provide 9 calories per gram, while carbohydrates and proteins both
provide 4 calories per gram. This makes fats the most energy-dense macronutrient.
2. A client is experiencing night blindness. This is most likely a deficiency in which fat-
soluble vitamin?
A) Vitamin D
B) Vitamin A
C) Vitamin E
D) Vitamin K
E) Vitamin C
Correct Answer: B) Vitamin A
Rationale: Vitamin A (retinol) is crucial for vision, particularly in low light. A deficiency
can lead to xerophthalmia, with night blindness as an early symptom.
3. Which of the following is considered a complete protein source?
A) Lentils
B) Peanuts
C) Quinoa
D) Black beans
E) Spinach
Correct Answer: C) Quinoa
Rationale: Complete proteins provide all nine essential amino acids. While most plant
proteins are incomplete, quinoa is one of the few plant-based foods that is a complete
protein. Animal products (meat, dairy, eggs) are also complete proteins.
4. A client is prescribed a low-sodium diet. Which of the following foods should the nurse
advise the client to avoid?
A) Fresh fruits
B) Canned soup
C) Plain baked potato
, D) Unsalted nuts
E) Steamed vegetables
Correct Answer: B) Canned soup
Rationale: Canned soups are typically very high in sodium, making them an important
food to avoid on a low-sodium diet. Fresh fruits, baked potatoes, unsalted nuts, and
steamed vegetables are generally low in sodium.
5. Which of the following is a primary function of carbohydrates in the body?
A) Building and repairing tissues.
B) Long-term energy storage.
C) Providing the body's main source of energy.
D) Regulating body temperature.
E) Transporting oxygen in the blood.
Correct Answer: C) Providing the body's main source of energy.
Rationale: Carbohydrates are the body's preferred and most readily available source of
energy, particularly for the brain and muscles.
6. A nurse is educating a client about increasing fiber intake. Which of the following foods
is a good source of soluble fiber?
A) Wheat bran
B) Celery
C) Oats
D) Brown rice
E) Green beans
Correct Answer: C) Oats
Rationale: Soluble fiber dissolves in water and forms a gel-like substance, which can
help lower cholesterol and regulate blood sugar. Good sources include oats, barley,
legumes, apples, and citrus fruits. Wheat bran is a source of insoluble fiber.
7. A client with osteoporosis is concerned about their calcium intake. Which of the
following foods is a non-dairy source of calcium?
A) Beef
B) Fortified orange juice
C) Chicken breast
D) Bananas
E) Apples
Correct Answer: B) Fortified orange juice
Rationale: While dairy products are excellent sources of calcium, fortified orange juice,
fortified plant milks (e.g., almond, soy), dark leafy greens (e.g., kale, collard greens), and
sardines are good non-dairy sources.
, 8. Which of the following vitamins is primarily responsible for blood clotting?
A) Vitamin A
B) Vitamin B12
C) Vitamin C
D) Vitamin D
E) Vitamin K
Correct Answer: E) Vitamin K
Rationale: Vitamin K is essential for the synthesis of several blood clotting factors in
the liver. A deficiency can lead to impaired clotting and increased bleeding.
9. A client is experiencing symptoms of dehydration. Which of the following is an early
indicator of dehydration?
A) Hypotension
B) Tachycardia
C) Sunken eyes
D) Dry mucous membranes
E) Increased urine output
Correct Answer: B) Tachycardia
Rationale: Tachycardia (increased heart rate) is often one of the earliest physiological
responses to dehydration as the body attempts to maintain cardiac output despite
reduced circulating blood volume. Dry mucous membranes, sunken eyes, and
hypotension are later signs.
10. A client with hypertension is encouraged to follow the DASH (Dietary Approaches to
Stop Hypertension) diet. This diet emphasizes:
A) High-sodium foods and processed meats.
B) Increased intake of red meat and full-fat dairy.
C) Fruits, vegetables, low-fat dairy, and whole grains.
D) Restricting all carbohydrate intake.
E) High intake of sugary beverages.
Correct Answer: C) Fruits, vegetables, low-fat dairy, and whole grains.
Rationale: The DASH diet is rich in potassium, calcium, and magnesium, and low in
sodium and saturated/total fat. It emphasizes fruits, vegetables, low-fat dairy, whole
grains, poultry, fish, and nuts.
11. Which of the following trace minerals is a component of thyroid hormones and essential
for proper thyroid function?
A) Iron
B) Zinc
C) Iodine
D) Selenium
