AFAA Personal Trainer Certification Practice Exam

What type of carbohydrate is primarily indigestible and found in fresh fruits and vegetables?

1. Sugar

2. Starch

3. Fiber

4. Protein

The correct answer is: Fiber

The correct answer is fiber, which is primarily indigestible and is found in fresh fruits and vegetables. Fiber is a type of carbohydrate that the human body cannot digest fully. It passes through the digestive system relatively intact and has various important health benefits. It contributes to digestive health by promoting regular bowel movements, aiding in the prevention of constipation, and providing a feeling of fullness that can assist in weight management. Fiber is categorized into two types: soluble and insoluble. Soluble fiber dissolves in water and can help lower cholesterol and stabilize blood sugar levels, while insoluble fiber adds bulk to the stool and helps food move through the digestive tract. Fresh fruits and vegetables are excellent sources of both types, making them essential components of a healthy diet. The other options represent different forms of carbohydrates or nutrients. Sugars are simple carbohydrates that provide quick energy but are fully digestible. Starches are complex carbohydrates that are digestible and found in foods like grains and legumes. Protein, while an essential nutrient, is not a carbohydrate and does not fit the context of the question. Thus, fiber stands out as the primary indigestible carbohydrate associated with fresh fruits and vegetables.