$$\text{Soluble Fiber} + \text{H}_2\text{O} \rightarrow \text{Viscous Gel}$$

$$\text{Soluble Fiber} + \text{Bile Acids} \rightarrow \text{Reduced Cholesterol Absorption}$$

Question 1

Which of the following best describes dietary fiber?

Accepted Answer

A group of non-digestible compounds with health benefits, mostly plant-based polysaccharides.

Question 2

Which equation correctly represents the formation of a viscous gel by soluble fiber in water?

Accepted Answer

$$	ext{Soluble Fiber} + 	ext{H}_2	ext{O} ightarrow 	ext{Viscous Gel}$$

Question 3

A food manufacturer adds pectin to yogurt to improve texture. This is an example of which type of fiber?

Accepted Answer

Functional fiber

Question 4

Which of the following is a health benefit associated with soluble fiber?

Accepted Answer

Lowers blood cholesterol by binding bile acids.

Question 5

Which of the following foods is most likely to reduce the risk of diverticulosis?

Accepted Answer

Whole grain bread

Question 6

Which statement best explains why insoluble fiber is not fermented by gut bacteria?

Accepted Answer

It is chemically resistant to enzymatic breakdown and does not dissolve in water.

Question 7

A patient is advised to increase fiber intake to help regulate blood glucose levels. Which type of fiber is most beneficial for this purpose?

Accepted Answer

Soluble fiber

Question 8

Which of the following is NOT a source of insoluble fiber?

Accepted Answer

Yogurt

Question 9

Which of the following equations represents the effect of fiber on cholesterol absorption?

Accepted Answer

$$	ext{Soluble Fiber} + 	ext{Bile Acids} ightarrow 	ext{Reduced Cholesterol Absorption}$$

Question 10

Which of the following is true regarding whole grains?

Accepted Answer

They contain the bran, germ, and endosperm of the wheat kernel.

Question 11

A food product contains added cellulose to prevent ingredients from separating. This fiber is best classified as:

Accepted Answer

Functional fiber

Question 12

Which of the following types of grain provides the most fiber per serving?

Accepted Answer

Whole grains

Question 13

Which of the following is a plausible consequence of excessive fiber intake?

Accepted Answer

Reduced absorption of minerals and nutrients

Question 14

Which of the following is NOT a health benefit of appropriate fiber consumption?

Accepted Answer

Increases risk of diverticulosis

Question 15

Which of the following is an example of a functional fiber?

Accepted Answer

Pectin added to jam to improve texture

Question 16

Which of the following statements about soluble and insoluble fibers is correct?

Accepted Answer

Soluble fibers are often fermented by gut bacteria.

Question 17

A patient with high cholesterol is advised to increase fiber intake. Which food would be most beneficial?

Accepted Answer

Oats

Question 18

Which of the following best describes the difference between dietary and functional fiber?

Accepted Answer

Dietary fiber occurs naturally in foods, while functional fiber is added to foods for health benefits.

Question 19

Which of the following is a source of soluble fiber?

Accepted Answer

Oats

Question 20

Which of the following equations best represents the effect of fiber on digestive transit time?

Accepted Answer

$$	ext{Insoluble Fiber} ightarrow 	ext{Increased Stool Bulk} ightarrow 	ext{Faster Transit Time}$$

Dietary Fiber: Types, Sources, and Health Benefits

Study Guide - Practice Questions