Nutrition Flashcards

Which macronutrient provides 9 calories per gram?

Answer: Fat

Fat provides 9 calories per gram, more than double the 4 calories per gram provided by carbohydrates or protein.

Which vitamin is synthesized by the body when the skin is exposed to sunlight?

Answer: Vitamin D

Vitamin D is produced in the skin through a reaction triggered by ultraviolet B (UVB) radiation from sunlight.

What is the primary function of carbohydrates in the body?

Answer: Providing energy

Carbohydrates are the body's preferred and primary source of energy, especially for the brain and working muscles.

Which mineral is essential for the formation of hemoglobin in red blood cells?

Answer: Iron

Iron is a key component of hemoglobin, the protein in red blood cells that carries oxygen throughout the body.

What type of fat is associated with raising LDL ('bad') cholesterol levels?

Answer: Saturated fat

Saturated fats, found in animal products and some tropical oils, are known to raise LDL cholesterol and increase cardiovascular disease risk.

How many essential amino acids must be obtained from the diet?

Answer: 9

There are 9 essential amino acids that the human body cannot synthesize and must be obtained through dietary sources.

Which food group is the best dietary source of complete proteins?

Answer: Animal products

Animal products such as meat, fish, eggs, and dairy contain all 9 essential amino acids, making them complete protein sources.