NETA Personal Trainer Practice Exam

What is a common characteristic of complex carbohydrates?

1. They are high in sugar content

2. They have low nutrient density

3. They contain vitamins, minerals, and fiber

4. They primarily serve as a quick energy source

The correct answer is: They contain vitamins, minerals, and fiber

Complex carbohydrates are characterized by their structure, which consists of long chains of sugar molecules. This structural complexity allows them to provide sustained energy and, importantly, they are commonly found in foods that also supply essential nutrients. Complex carbohydrates, such as whole grains, legumes, and vegetables, are rich in vitamins, minerals, and fiber, making them nutrient-dense foods. Fiber, a component of complex carbohydrates, aids in digestion and contributes to a feeling of fullness, which can help with weight management. The presence of vitamins and minerals, such as B vitamins, iron, and magnesium, enhances their health benefits. Therefore, the correct choice emphasizes that complex carbohydrates are not just a source of energy but also a means of delivering vital nutrients to the body. The other options do not accurately reflect the characteristics of complex carbohydrates. For example, while some complex carbohydrates can contain sugars, they do not typically have a high sugar content compared to simple carbohydrates. Nutrient density is a strong point for complex carbohydrates, so stating they have low nutrient density is misleading. Lastly, while complex carbohydrates do provide energy, they are more focused on providing long-lasting energy rather than serving primarily as a quick energy source, which is more characteristic of simple carbohydrates.