NAFC Nutrition and Weight Management 2

Question 1

Which vitamin is primarily synthesized by the skin upon exposure to sunlight?

Accepted Answer

Vitamin D

Answer

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?

Accepted Answer

Provide energy

Answer

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?

Accepted Answer

Trans fat

Answer

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?

Accepted Answer

20–35%

Answer

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?

Accepted Answer

Calcium

Answer

Calcium is the primary mineral responsible for maintaining bone strength and density throughout life.

NAFC - National Association for Fitness Certification Practice Test