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Multiple Choice
Which of the following statements is true regarding dietary fiber?
A
Dietary fiber is primarily composed of proteins and fats.
B
Dietary fiber is a type of carbohydrate that is digestible by humans.
C
Dietary fiber helps regulate blood sugar levels by slowing down digestion.
D
Dietary fiber is absorbed in the small intestine.
Verified step by step guidance
1
Begin by understanding what dietary fiber is. Dietary fiber is a type of carbohydrate, but unlike other carbohydrates, it is not digestible by humans. It passes through the digestive system relatively intact.
Consider the composition of dietary fiber. It is primarily composed of plant-based materials such as cellulose, hemicellulose, and lignin, which are not proteins or fats.
Evaluate the statement about digestion. Dietary fiber is not absorbed in the small intestine; instead, it moves into the large intestine where it can be fermented by gut bacteria.
Examine the role of dietary fiber in regulating blood sugar levels. Dietary fiber helps slow down the digestion process, which can lead to more stable blood sugar levels by preventing rapid spikes after meals.
Review the options given and identify the statement that aligns with the known functions and characteristics of dietary fiber. The statement that dietary fiber helps regulate blood sugar levels by slowing down digestion is consistent with its known benefits.