$$\text{Stool Bulk} \propto \text{Insoluble Fiber Intake}$$

Question 1

Which of the following best describes the role of non-nutritive foods in human nutrition?

Accepted Answer

They do not provide calories, vitamins, or minerals.

Question 2

Which statement about fiber is CORRECT?

Accepted Answer

Soluble fiber dissolves in water and may help lower cholesterol.

Question 3

A patient is advised to increase their intake of insoluble fiber. Which food would be MOST appropriate to recommend?

Accepted Answer

Whole wheat bread

Question 4

Which of the following is a function of phytochemicals?

Accepted Answer

They are associated with reduced inflammation and cancer risk.

Question 5

Which statement about fiber digestion is TRUE?

Accepted Answer

Fiber cannot be digested by human enzymes.

Question 6

A nutritionist is designing a diet to help lower a client's risk of heart disease. Which type of fiber should be emphasized?

Accepted Answer

Soluble fiber, because it can help lower cholesterol.

Question 7

Which of the following is NOT a characteristic of phytochemicals?

Accepted Answer

They provide calories and protein.

Question 8

Which equation correctly represents the relationship between fiber intake and stool bulk?

Accepted Answer

$$	ext{Stool Bulk} \propto 	ext{Insoluble Fiber Intake}$$

Question 9

A person consumes a diet high in phytochemicals. Which health outcome is MOST likely associated with this dietary pattern?

Accepted Answer

Reduced inflammation

Question 10

Which of the following foods is likely to be highest in phytochemicals?

Accepted Answer

Broccoli

Question 11

Which statement about soluble and insoluble fiber is CORRECT?

Accepted Answer

Soluble fiber dissolves in water and slows movement through the digestive tract.

Question 12

A patient with constipation is advised to increase their fiber intake. Which mechanism explains how fiber helps relieve constipation?

Accepted Answer

Fiber increases water absorption in the colon, softening stool.

Question 13

Which of the following is a TRUE statement about non-digestible foods?

Accepted Answer

They do not provide energy but may have health benefits.

Question 14

Which of the following is an example of a polyphenol?

Accepted Answer

Flavonoids

Question 15

A researcher is studying the effect of fiber on cancer risk. Which type of fiber is MOST associated with reduced risk of colon cancer?

Accepted Answer

Insoluble fiber

Question 16

Which formula best represents the effect of soluble fiber on cholesterol levels?

Accepted Answer

$$	ext{Cholesterol Level} = 	ext{Baseline} - k 	imes 	ext{Soluble Fiber Intake}$$

Question 17

Which of the following statements about polyphenols is CORRECT?

Accepted Answer

Polyphenols are plant compounds that may reduce inflammation.

Question 18

A diet rich in which of the following is MOST likely to provide both fiber and phytochemicals?

Accepted Answer

Fruits and vegetables

Question 19

Which of the following is NOT a benefit of dietary fiber?

Accepted Answer

Provides essential amino acids

Question 20

Which statement best explains why fiber is considered a non-nutritive food?

Accepted Answer

Fiber does not provide calories, vitamins, or minerals.

Fiber and Phytochemicals: Non-nutritive Foods in Nutrition

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