Michigan Esthetician State Board Practice Exam

Which nutrient primarily provides energy to the body?

1. Fats

2. Proteins

3. Carbohydrates

4. Vitamins

The correct answer is: Carbohydrates

Carbohydrates are the primary source of energy for the body. When consumed, they are broken down into glucose, which is then utilized by the body's cells to produce energy. This process occurs during digestion, where complex carbohydrates are converted into simpler sugars that the body can easily use. Carbohydrates are essential for various bodily functions, including supporting brain activity, fueling muscle contractions during physical activities, and maintaining overall metabolic processes. While fats and proteins can also provide energy, their roles in energy supply are secondary to that of carbohydrates. Fats are more energy-dense and serve important functions regarding long-term energy storage and insulation, while proteins primarily play a role in building and repairing tissues and not as a primary energy source. Vitamins, although crucial for various biochemical reactions and overall health, do not provide energy directly. Therefore, carbohydrates are recognized as the go-to nutrient for quick and efficient energy for the body.