Diet Balanced Diet 2 — Questions and Answers
Question 1: Which macronutrient provides 9 calories per gram, the highest of all macronutrients?
- Carbohydrates
- Protein
- Fat (Correct answer)
- Fiber
Correct answer: Fat
Dietary fat provides 9 calories per gram, compared to 4 calories per gram for both carbohydrates and protein.
Question 2: What is the recommended daily fiber intake for adult women under 50 according to US dietary guidelines?
- 15 grams
- 21 grams
- 25 grams (Correct answer)
- 38 grams
Correct answer: 25 grams
The recommended daily fiber intake for adult women under 50 is 25 grams per day.
Question 3: Which food group provides the most complete source of all essential amino acids?
- Legumes
- Grains
- Animal proteins (Correct answer)
- Nuts
Correct answer: Animal proteins
Animal proteins such as meat, eggs, and dairy contain all essential amino acids in adequate proportions, making them complete proteins.
Question 4: The MyPlate model recommends that grains make up what fraction of your plate?
- One quarter (Correct answer)
- One third
- One half
- Two thirds
Correct answer: One quarter
MyPlate recommends grains fill one quarter of the plate, with at least half of those being whole grains.
Question 5: Which vitamin is uniquely found in animal foods and not naturally present in plant foods?
- Vitamin C
- Vitamin B12 (Correct answer)
- Vitamin K
- Folate
Correct answer: Vitamin B12
Vitamin B12 is naturally found only in animal-derived foods, making supplementation important for vegans.
Question 6: What is the primary role of carbohydrates in a balanced diet?
- Building muscle tissue
- Providing energy (Correct answer)
- Transporting fat-soluble vitamins
- Forming hormones
Correct answer: Providing energy
Carbohydrates are the body's preferred and primary source of energy, particularly for the brain and muscles.
Question 7: Which of the following is classified as a micronutrient?
- Protein
- Carbohydrate
- Iron (Correct answer)
- Fat
Correct answer: Iron
Iron is a micronutrient — a mineral needed in small amounts — unlike macronutrients such as protein, carbohydrates, and fat.
Diet Balanced Diet 2
Which macronutrient provides 9 calories per gram, the highest of all macronutrients?