Q: Which of the following carbohydrates provides fiber, or “roughage,” in humans?
Correct: 0 / Attempted: 0
(A) Sucrose
(B) Starch
(C) Cellulose
(D) Glycogen
Answer: (C) Cellulose Explanation: Cellulose is a complex carbohydrate found in the cell walls of plants. Humans cannot digest cellulose because they lack the enzyme needed to break it down. However, it plays a crucial role as dietary fiber, aiding in digestion by adding bulk to stool and helping to maintain regular bowel movements. Sucrose, starch, and glycogen are carbohydrates, but they do not provide fiber; instead, they are used primarily for energy.
