10 Questions
What are the two types of dietary fiber?
Soluble and insoluble fiber
What do bulking fibers do as they move through the digestive system?
Absorb water, easing defecation
Which component of dietary fiber can be attacked by bacteria in the intestine?
Insoluble polysaccharides
Which of the following is a non-starch polysaccharide found in dietary fiber?
Cellulose
What is the physiological activity of soluble fiber in the colon?
Readily fermented into gases and physiologically active byproducts
Which of the following is an example of soluble fiber?
Inulin
What is the physiological activity of insoluble fiber in the large intestine?
Provides bulking
Which of the following is a metabolically inert component of dietary fiber?
Resistant starch
Which non-starch polysaccharide is a component of dietary fiber that can be attacked by bacteria in the intestine?
Oligosaccharides
What is the main characteristic of bulking fibers as they move through the digestive system?
Absorb water
Study Notes
Types of Dietary Fiber
- There are two types of dietary fiber: soluble fiber and insoluble fiber.
Physiological Activity of Fiber in the Digestive System
- Bulking fibers absorb water and expand as they move through the digestive system, helping to regulate bowel movements and prevent constipation.
- Soluble fiber is fermented by bacteria in the colon, producing short-chain fatty acids and promoting the growth of beneficial gut microbiota.
- Insoluble fiber absorbs water and helps to move food through the digestive system, promoting regular bowel movements.
Characteristics of Fiber Components
- Pectin is a non-starch polysaccharide found in dietary fiber.
- Soluble fiber is fermented by bacteria in the intestine, producing beneficial byproducts.
- Cellulose is a metabolically inert component of dietary fiber.
- Fructans are a type of non-starch polysaccharide that can be attacked by bacteria in the intestine.
Key Characteristics of Fiber Types
- Soluble fiber is characterized by its ability to be fermented by bacteria in the colon, promoting beneficial gut microbiota.
- Insoluble fiber is characterized by its ability to absorb water and promote regular bowel movements.
- Bulking fibers are characterized by their ability to absorb water and expand as they move through the digestive system.
Test your knowledge of dietary fiber with this quiz on the determination of fiber content in food. Learn about the different types of dietary fiber, their sources, and their impact on digestion and health.
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