Texas Medical Assistant Certification Practice Test

What is the body's first and primary source of food?

1. Fats

2. Proteins

3. Carbohydrates

4. Vitamins

The correct answer is: Carbohydrates

The body’s first and primary source of food is carbohydrates. Carbohydrates are broken down into glucose, which is used as the main source of energy for the body’s cells and is crucial for normal functioning, especially for the brain and muscles during exercise. When carbohydrates are consumed, the body efficiently converts them into glucose, making them readily available for energy production. This process is essential, as glucose is the quickest form of energy that the body can utilize. While fats and proteins serve important roles in the body, such as providing long-term energy storage and building and repairing tissues, respectively, they are generally used after carbohydrates. Vitamins play vital roles in various bodily functions as well but do not serve as a primary energy source. Therefore, carbohydrates are prioritized by the body, making them the first choice for energy.