NAFC Nutrition and Weight Management 2 — Questions and Answers
Question 1: Which vitamin is primarily synthesized by the skin upon exposure to sunlight?
- Vitamin D (Correct answer)
- Vitamin C
- Vitamin A
- Vitamin B12
Correct answer: Vitamin D
Vitamin D is synthesized in the skin through exposure to ultraviolet B (UVB) radiation from sunlight.
Question 2: What is the primary role of carbohydrates in the body?
- Provide energy (Correct answer)
- Build muscle tissue
- Transport oxygen
- Regulate hormones
Correct answer: Provide energy
Carbohydrates are the body's preferred and primary source of energy, especially for the brain and muscles.
Question 3: Which type of fat is considered most harmful to cardiovascular health?
- Trans fat (Correct answer)
- Monounsaturated fat
- Polyunsaturated fat
- Omega-3 fat
Correct answer: Trans fat
Trans fats raise LDL cholesterol and lower HDL cholesterol, significantly increasing cardiovascular disease risk.
Question 4: What is the AMDR for dietary fat as a percentage of total daily calories?
- 20–35% (Correct answer)
- 5–10%
- 45–65%
- 10–15%
Correct answer: 20–35%
The Acceptable Macronutrient Distribution Range (AMDR) for fat is 20–35% of total daily caloric intake.
Question 5: Which mineral is most important for bone health and density?
- Calcium (Correct answer)
- Iron
- Sodium
- Potassium
Correct answer: Calcium
Calcium is the primary mineral responsible for maintaining bone strength and density throughout life.
Question 6: What is glycogen?
- Stored form of glucose in the liver and muscles (Correct answer)
- A type of dietary fat
- A digestive enzyme
- A form of dietary fiber
Correct answer: Stored form of glucose in the liver and muscles
Glycogen is the stored form of glucose found primarily in the liver and skeletal muscles.
NAFC Nutrition and Weight Management 2
Which vitamin is primarily synthesized by the skin upon exposure to sunlight?