What is the term for an indigestible complex carbohydrate that contributes 0 Calories per gram to a person's diet?

Question

BlackTom AI · Accepted Answer

When evaluating terms for carbohydrate nutrition, we distinguish between what provides energy and what does not.
Option 1: Starch. Starch is a digestible carbohydrate composed of glucose units that the human small intestine enzymes can break down, yielding calories. Therefore, it is not indigestible and does not contribute 0 calories per gram.
Option 2: Sugar. Sugars are simple carbohydrates that are readily absorbed and metabolized, delivering energy in calories per gram. They are not indigestible and do not fall into the 0-calorie category.
Option 3: Fiber. Dietary fiber refers to complex carbohydrates that resist digestion by human enzymes. Much of it passes through the small intestine intact, delivering little to no usable calories per gram for most types, though some fibers can be partially fermented in the colon. In many dietary contexts, fiber is described as contributing 0 calories per gram, aligning with its indigestible nature.
Option 4: Digestible carbohydrate. This term broadly covers carbohydrates that the body can digest and convert to energy, typically providing calories per gram. It contrasts with indigestible fibers, and thus does not fit the description of 0 calories per gram.
Across these options, the key distinction rests on digestibility and energy yield. Starch and sugar are clearly digestible and energy-yielding, while a digestible carbohydrate is, by definition, not indigestible. Fiber stands out as the indigestible complex carbohydrate frequently associated with 0 calories per gram in standard nutrition references, reflecting its limited or non-absorbed caloric contribution for many fiber types.

What is the term for an indigestible complex carbohydrate that contributes 0 Calories per gram to a person's diet?单项选择题

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