Question 1

What are plant polysaccharides found in flax and psyllium that are effective in reducing serum LDL cholesterol?

Accepted Answer

A)  beta-glucans
B)  fructans
C)  mucilages
D)  chitin

Question 2

Match the fiber with an appropriate description.
-gum

Accepted Answer

A)  The main noncarbohydrate component of fiber and a three-dimensional polymer of phenol.Found in carrots,berries,and wheat,and insoluble in water.
B)  A hydrocolloid composed of sugar and sugar derivatives commonly used as a food additive that is secreted from plant injuries or can also be found in oats,barley,and legumes.
C)  A long linear polymer that provides structure to the cell wall.Found in bran,legumes,root vegetables,and apples.
D)  Contains a number of sugars in its backbone and side chains.Some are water soluble and some are insoluble; found in bran and whole grains.
E)  A group of polysaccharides with galacturonic acid as a primary constituent.It is soluble and gel forming; plentiful in many fruits.

Question 3

The health benefits of fiber are based on which two characteristics?

Accepted Answer

A)  viscosity and solubility
B)  viscosity and fermentability
C)  fermentability and solubility
D)  solubility and stability

Question 4

Make an argument defending the statement: To remain healthy,it is best to eat foods containing a variety of fiber types each day.

Accepted Answer

Grading rubric - answer should include...

Question 5

The predominant source of chitin is ____.

Accepted Answer

A)  shells of crab, lobster, and shrimp
B)  bran
C)  vegetables
D)  fruits

Question 6

Which type of food does not contain cellulose purified from wood?

Accepted Answer

A)  canned green beans
B)  cake mixes
C)  sandwich spreads
D)  fruit juice mixes

Question 7

Dietary fiber is defined as nondigestible carbohydrates and lignin that are intact and intrinsic in plants.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is considered a functional fiber?

Accepted Answer

A)  hemicellulose
B)  fructans
C)  psyllium
D)  lignin

Question 9

What are the components that make up fermentable dietary fiber and in what foods are each found?

Accepted Answer

​Grading rubric - answer should include ...

Question 10

β-glucans are effective in reducing serum cholesterol.

Accepted Answer

A) True 
 B)False

Question 11

Which mechanism is not associated with the manner in which fiber lowers serum cholesterol concentrations?

Accepted Answer

A)  decreased transit time
B)  increased excretion of bile acids in the feces
C)  a shift of bile acid pools toward chenodeoxycholic acid, which inhibits HMG-CoA reductase
D)  production of propionic acid from gut fermentation of fiber

Question 12

An individual who consumed a diet extremely high in cellulose would most likely suffer with ____.

Accepted Answer

A)  diarrhea
B)  constipation
C)  high blood pressure
D)  diabetes

Question 13

Match the condition with the benefit provided by the fiber.
-diabetes mellitus

Accepted Answer

A)  viscous,gel-forming fibers improve glycemic control
B)  non or less fermentable fibers increase fecal bulk
C)  fiber-rich foods and hormones such as ghrelin,peptide YY and cholecystokinin modulate appetite
D)  viscous,gel-forming fibers lower total and LDL cholesterol
E)  fiber reduces bile concentration,dilutes intestinal contents,and reduces colonic transit time

Question 14

Discuss the benefits of fermentable fibers in terms of their prebiotic function.

Accepted Answer

​Grading rubric - answer should include ...

Question 15

Match the condition with the benefit provided by the fiber.
-cardiovascular disease

Accepted Answer

A)  viscous,gel-forming fibers improve glycemic control
B)  non or less fermentable fibers increase fecal bulk
C)  fiber-rich foods and hormones such as ghrelin,peptide YY and cholecystokinin modulate appetite
D)  viscous,gel-forming fibers lower total and LDL cholesterol
E)  fiber reduces bile concentration,dilutes intestinal contents,and reduces colonic transit time

Question 16

Which of the following high-fiber foods are most effective in lowering serum cholesterol?

Accepted Answer

A)  corn and wheat
B)  chitosan and chitin
C)  rice bran and wheat bran
D)  oat bran

Question 17

A high-molecular-weight substance made up of a repeating chain is the definition of a(n) ____.

Accepted Answer

A)  polymer
B)  monomer
C)  isomer
D)  disaccharide

Question 18

Discuss three health claims relating to fiber that have been approved by the U.S.Food and Drug Administration.

Accepted Answer

Grading rubric - answer should include t...

Question 19

Which of the following types of foods contributes the most fiber in a usual serving?

Accepted Answer

A)  whole-grain breads
B)  legumes, beans
C)  meat, dairy
D)  leafy vegetables

Question 20

Which substance is used to replace fat in fillings,dairy products,and dressings?

Accepted Answer

A)  fructooligosaccharides
B)  mucilages
C)  inulin
D)  β-glucans

Exam 4: Fiber

Discuss three health claims relating to fiber that have been approved by the U.S.Food and Drug Administration.

Correct AnswerverifiedGrading rubric - answer should include t...View AnswerShow Answer

A high-molecular-weight substance made up of a repeating chain is the definition of a(n) ____.

Correct AnswerverifiedShow Answer

Which substance is used to replace fat in fillings,dairy products,and dressings?

Correct AnswerverifiedShow Answer

Discuss the benefits of fermentable fibers in terms of their prebiotic function.

Correct Answerverified​Grading rubric - answer should include ...View AnswerShow Answer

The predominant source of chitin is ____.

Correct AnswerverifiedShow Answer

Which of the following is considered a functional fiber?

Correct AnswerverifiedShow Answer

Match the fiber with an appropriate description. -gum

Correct AnswerverifiedShow Answer

An individual who consumed a diet extremely high in cellulose would most likely suffer with ____.

Correct AnswerverifiedShow Answer

Which type of food does not contain cellulose purified from wood?

Correct AnswerverifiedShow Answer

Which of the following types of foods contributes the most fiber in a usual serving?

Correct AnswerverifiedShow Answer

Which mechanism is not associated with the manner in which fiber lowers serum cholesterol concentrations?

Correct AnswerverifiedShow Answer

The health benefits of fiber are based on which two characteristics?

Correct AnswerverifiedShow Answer

Dietary fiber is defined as nondigestible carbohydrates and lignin that are intact and intrinsic in plants.

Correct AnswerverifiedShow Answer

Match the condition with the benefit provided by the fiber. -diabetes mellitus

Correct AnswerverifiedShow Answer

β-glucans are effective in reducing serum cholesterol.

Correct AnswerverifiedShow Answer

What are plant polysaccharides found in flax and psyllium that are effective in reducing serum LDL cholesterol?

Correct AnswerverifiedShow Answer

Match the condition with the benefit provided by the fiber. -cardiovascular disease

Correct AnswerverifiedShow Answer

Make an argument defending the statement: To remain healthy,it is best to eat foods containing a variety of fiber types each day.

Correct Answerverified​Grading rubric - answer should include...View AnswerShow Answer

What are the components that make up fermentable dietary fiber and in what foods are each found?

Correct Answerverified​Grading rubric - answer should include ...View AnswerShow Answer

Which of the following high-fiber foods are most effective in lowering serum cholesterol?

Correct AnswerverifiedShow Answer

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