RD - Commission on Dietetic Registration (CDR) Practice Test

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Prepare for the CDR Exam with our RD practice quiz! Utilize flashcards, multiple choice questions, hints, and explanations to enhance your readiness for the dietitian registration test.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the role of fiber in the diet?

To provide essential amino acids
To enhance digestion and regularity
To supply quick energy
To store fat-soluble vitamins

The correct answer is: To enhance digestion and regularity

Fiber plays a crucial role in digestive health and is primarily known for enhancing digestion and promoting regularity. It acts as a bulking agent in the digestive system, which helps to move food through the intestines more efficiently. This can prevent issues such as constipation and may support healthy bowel function overall. Additionally, fiber can help regulate blood sugar levels by slowing the absorption of sugar, which contributes to a feeling of fullness and can aid in weight management. Its benefits extend to heart health as well, by helping to lower cholesterol levels. Other options imply roles that fibers do not fulfill, such as providing essential amino acids, which are specific to protein-rich foods. Additionally, while carbohydrates can supply quick energy, fiber itself does not provide energy in the same way, as it is not fully digestible. Lastly, fiber does not store fat-soluble vitamins; this function is related to fats in the diet. Thus, the correct answer highlights fiber's vital function in enhancing digestion and promoting regularity.