WGU D440 Nutrition OA Exam 2026-119 QUESTIONS AND ANSWERS ALREADY
GRADED A+. 100% Verified Solutions Updated Per Latest Guidelines Graded A+.
WGU D440 Nutrition OA Exam Practice Questions (200 Questions)
Section 1: Macronutrients & Energy Metabolism
1. How many kilocalories are provided by 1 gram of carbohydrate?
A) 4 kcal
B) 7 kcal
C) 9 kcal
D) 12 kcal
Answer: A) 4 kcal
Rationale: Carbohydrates provide 4 kilocalories per gram. Protein also provides 4
kcal/g, fat provides 9 kcal/g, and alcohol provides 7 kcal/g. This is a fundamental
concept for calculating energy intake and understanding macronutrient
composition of foods .
,2. Which macronutrient is the most energy-dense?
A) Carbohydrates
B) Proteins
C) Fats
D) Alcohol
Answer: C) Fats
Rationale: Fat provides 9 kilocalories per gram, making it the most energy-dense
macronutrient. This is why high-fat foods are more calorie-dense than
carbohydrate- or protein-rich foods, and why fat intake must be carefully
monitored in weight management .
3. Which of the following is an example of a complex carbohydrate?
,A) Table sugar
B) Honey
C) Brown rice
D) Fruit juice
Answer: C) Brown rice
Rationale: Brown rice is a complex carbohydrate (starch) that provides sustained
energy due to its longer digestion time. Table sugar, honey, and fruit juice are
simple carbohydrates that are absorbed more rapidly and can cause blood
glucose spikes .
4. Which of the following is an example of a simple carbohydrate?
A) Oatmeal
B) Brown rice
, C) Table sugar
D) Whole wheat bread
Answer: C) Table sugar
Rationale: Table sugar (sucrose) is a simple carbohydrate. Oatmeal, brown rice,
and whole wheat bread contain complex carbohydrates (starches) that provide
more sustained energy and typically more fiber .
5. What is the primary function of carbohydrates in the body?
A) Building muscle tissue
B) Serving as the preferred energy source for the brain and muscles
C) Insulating vital organs
D) Transporting fat-soluble vitamins
GRADED A+. 100% Verified Solutions Updated Per Latest Guidelines Graded A+.
WGU D440 Nutrition OA Exam Practice Questions (200 Questions)
Section 1: Macronutrients & Energy Metabolism
1. How many kilocalories are provided by 1 gram of carbohydrate?
A) 4 kcal
B) 7 kcal
C) 9 kcal
D) 12 kcal
Answer: A) 4 kcal
Rationale: Carbohydrates provide 4 kilocalories per gram. Protein also provides 4
kcal/g, fat provides 9 kcal/g, and alcohol provides 7 kcal/g. This is a fundamental
concept for calculating energy intake and understanding macronutrient
composition of foods .
,2. Which macronutrient is the most energy-dense?
A) Carbohydrates
B) Proteins
C) Fats
D) Alcohol
Answer: C) Fats
Rationale: Fat provides 9 kilocalories per gram, making it the most energy-dense
macronutrient. This is why high-fat foods are more calorie-dense than
carbohydrate- or protein-rich foods, and why fat intake must be carefully
monitored in weight management .
3. Which of the following is an example of a complex carbohydrate?
,A) Table sugar
B) Honey
C) Brown rice
D) Fruit juice
Answer: C) Brown rice
Rationale: Brown rice is a complex carbohydrate (starch) that provides sustained
energy due to its longer digestion time. Table sugar, honey, and fruit juice are
simple carbohydrates that are absorbed more rapidly and can cause blood
glucose spikes .
4. Which of the following is an example of a simple carbohydrate?
A) Oatmeal
B) Brown rice
, C) Table sugar
D) Whole wheat bread
Answer: C) Table sugar
Rationale: Table sugar (sucrose) is a simple carbohydrate. Oatmeal, brown rice,
and whole wheat bread contain complex carbohydrates (starches) that provide
more sustained energy and typically more fiber .
5. What is the primary function of carbohydrates in the body?
A) Building muscle tissue
B) Serving as the preferred energy source for the brain and muscles
C) Insulating vital organs
D) Transporting fat-soluble vitamins
