Fiber that is generally non-viscous and non-fermentable falls under what category of fiber?

Question

BlackTom AI · Accepted Answer

Water-insoluble fibers are generally non-viscous and poorly fermented, so the correct choice is a. Water–insoluble fiber.

1) Relevant knowledge points and concepts
- Dietary fiber is classified by solubility (water-soluble vs water-insoluble) and by source/function (intrinsic plant fiber vs functional/added fiber).
- Water-insoluble fibers (e.g., cellulose, lignin, some hemicelluloses) do not dissolve in water, are non-viscous, add bulk to stool, and are minimally fermented by colonic bacteria.
- Water-soluble fibers (e.g., pectins, gums, beta-glucans) form viscous gels, slow gastric emptying, and are more readily fermented.
- Functional fiber refers to isolated or manufactured nondigestible carbohydrates that have physiological benefits; they can be soluble or insoluble.

2) Step-by-step reasoning
- The question describes fiber that is "non-viscous and non-fermentable." Non-viscous rules out fibers that form gels (i.e., water-soluble, viscous types).
- Non-fermentable means colonic bacteria do not substantially break it down—this is characteristic of many water-insoluble fibers.
- Therefore the description matches water-insoluble fiber.

3) Calculations
- No numerical calculations are needed for this conceptual classification question.

4) Why the correct answer is correct
- Water-insoluble fibers such as cellulose and lignin do not dissolve in the gut, do not form viscous solutions, and resist bacterial fermentation; they increase stool bulk and speed transit, which exactly fits the described properties.

5) Why the other options are incorrect
- b. Functional fiber: too broad—functional fibers can be soluble or insoluble and often include fermentable fibers, so it does not specifically match “non-viscous and non-fermentable.”
- c. Pectins: pectins are water-soluble, form viscous gels, and are fermentable—opposite of the description.
- d. Water-soluble fiber: by definition tends to be viscous and more fermentable, so it does not fit.

6) Conclusion
The description corresponds to water-insoluble fiber; thus the correct answer is a. Water-insoluble fiber, which matches the provided answer.

Fiber that is generally non-viscous and non-fermentable falls under what category of fiber?单项选择题

类似问题

What does the fiber in diet pills do?

Which of the foods below does not contain dietary fiber?

Gums are classified as soluble fiber because they are not completely digested/absorbed by the body. What is a consequence?

A very active 24-year-old male consumes 4,000 kcal/day. Based on his current energy intake, he should get an average of _____ grams/day of total dietary fiber.

Which nutrient passes through the GI tract mostly undigested and unabsorbed?

Which statement is FALSE? Excessive dietary fiber intake in young children is a potential health concern because:

Which of the following health concerns could be from eating a low fiber diet?

A student consumes 2000 calories a day and usually consumes 10 grams of fiber. How much fiber do they need to add to their diet to meet the fiber recommendations?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单