Question 1

Riboflavin forms active coenzymes that do all the following except:

Accepted Answer

A) assist with energy production from carbohydrates,proteins and fats. 
B) function as electron carriers. 
C) participate in the citric acid cycle. 
D) relay signals between nerve cells. 
A) assist with energy production from carbohydrates,proteins and fats. 
B) function as electron carriers. 
C) participate in the citric acid cycle. 
D) relay signals between nerve cells.

Question 2

Which of the following is NOT recognized as a major function of vitamin C in the body?

Accepted Answer

A) Formation of collagen 
B) Facilitating release of energy from glucose 
C) Protection against damage from free radicals 
D) Enhancing iron absorption 
A) Formation of collagen 
B) Facilitating release of energy from glucose 
C) Protection against damage from free radicals 
D) Enhancing iron absorption

Question 3

The RDA for B₆ in adults ____________ with aging.

Accepted Answer

A) increases 
B) decreases 
C) stays the same 
D) increases for males but decreases for females 
A) increases 
B) decreases 
C) stays the same 
D) increases for males but decreases for females

Question 4

Elevated homocysteine is associated with increased risk of cardiovascular disease.In clinical studies,which vitamins have been shown to decrease homocysteine levels in the blood?

Accepted Answer

A) Vitamins A,C & E 
B) Riboflavin,A & folate 
C) B₆,folate & B₁₂ 
D) Pantothenic acid,riboflavin & biotin 
A) Vitamins A,C & E 
B) Riboflavin,A & folate 
C) B₆,folate & B₁₂ 
D) Pantothenic acid,riboflavin & biotin

Question 5

Meeting vitamin B₁₂ needs from the diet is especially difficult for:

Accepted Answer

A) athletes undergoing rigorous training. 
B) infants. 
C) vegans. 
D) pregnant women. 
A) athletes undergoing rigorous training. 
B) infants. 
C) vegans. 
D) pregnant women.

Question 6

Which statement concerning vitamins is incorrect?

Accepted Answer

A) Vitamins are organic compounds. 
B) If a vitamin is not provided by the diet,the body will synthesize it. 
C) The vitamin content of a food may be affected by cooking and processing. 
D) Vitamins are essential for growth,reproduction and health. 
A) Vitamins are organic compounds. 
B) If a vitamin is not provided by the diet,the body will synthesize it. 
C) The vitamin content of a food may be affected by cooking and processing. 
D) Vitamins are essential for growth,reproduction and health.

Question 7

Vitamin C deficiency causes:

Accepted Answer

A) bleeding gums. 
B) hemolysis. 
C) pernicious anemia. 
D) megaloblastic anemia. 
A) bleeding gums. 
B) hemolysis. 
C) pernicious anemia. 
D) megaloblastic anemia.

Question 8

A common adverse effect of niacin toxicity is:

Accepted Answer

A) dermatitis. 
B) flushing of the skin. 
C) dementia. 
D) hives. 
A) dermatitis. 
B) flushing of the skin. 
C) dementia. 
D) hives.

Question 9

Biotin is tightly bound by avidin,which prevents absorption of the vitamin.Avidin is commonly found in:

Accepted Answer

A) egg whites. 
B) kidney beans. 
C) peanuts. 
D) spinach. 
A) egg whites. 
B) kidney beans. 
C) peanuts. 
D) spinach.

Question 10

Pantothenic acid is abundant in:

Accepted Answer

A) raw spinach. 
B) sunflower seeds. 
C) apples. 
D) All of the above. 
A) raw spinach. 
B) sunflower seeds. 
C) apples. 
D) All of the above.

Question 11

Pantothenic acid forms part of which molecule?

Accepted Answer

A) Coenzyme A 
B) Flavinadenine dinucleotide 
C) Pyridoxal phosphate 
D) Adenosine triphosphate 
A) Coenzyme A 
B) Flavinadenine dinucleotide 
C) Pyridoxal phosphate 
D) Adenosine triphosphate

Question 12

The role of folate in DNA synthesis makes it particularly important in:

Accepted Answer

A) lipid synthesis. 
B) rapidly dividing cells. 
C) nerve cells. 
D) old age. 
A) lipid synthesis. 
B) rapidly dividing cells. 
C) nerve cells. 
D) old age.

Question 13

Which of the following does NOT affect thiamin availability in food?

Accepted Answer

A) Presence of other vitamins 
B) Enzymes found in raw fish 
C) Compounds found in blueberries,tea and coffee 
D) Heat,as generated in cooking 
A) Presence of other vitamins 
B) Enzymes found in raw fish 
C) Compounds found in blueberries,tea and coffee 
D) Heat,as generated in cooking

Question 14

Which is the FALSE statement regarding vitamin C?

Accepted Answer

A) Vitamin C may decrease the duration of the common cold. 
B) People prone to developing certain types of kidney stones should avoid vitamin C supplementation. 
C) Vitamin C is efficiently stored in the liver,so deficiency symptoms take weeks or months to develop. 
D) Vitamin C supplements are unlikely to cause toxicity. 
A) Vitamin C may decrease the duration of the common cold. 
B) People prone to developing certain types of kidney stones should avoid vitamin C supplementation. 
C) Vitamin C is efficiently stored in the liver,so deficiency symptoms take weeks or months to develop. 
D) Vitamin C supplements are unlikely to cause toxicity.

Question 15

Which disease is caused by niacin deficiency?

Accepted Answer

A) Beriberi 
B) Scurvy 
C) Pellagra 
D) None of the above 
A) Beriberi 
B) Scurvy 
C) Pellagra 
D) None of the above

Question 16

Beriberi is a disease caused by lack of ________ in the diet.

Accepted Answer

A) riboflavin 
B) thiamin 
C) vitamin C 
D) niacin 
A) riboflavin 
B) thiamin 
C) vitamin C 
D) niacin

Question 17

Choline deficiency may contribute to all of the following EXCEPT:

Accepted Answer

A) neurological disorders. 
B) development of diabetes. 
C) atherosclerosis. 
D) liver disease. 
A) neurological disorders. 
B) development of diabetes. 
C) atherosclerosis. 
D) liver disease.

Question 18

When the vitamins lost in grain processing are restored,which is a nutrient typically NOT added back?

Accepted Answer

A) Iron 
B) Thiamin 
C) Pantothenic acid 
D) Riboflavin 
A) Iron 
B) Thiamin 
C) Pantothenic acid 
D) Riboflavin

Question 19

Riboflavin is most easily destroyed when exposed to:

Accepted Answer

A) light. 
B) vitamin C. 
C) oxygen. 
D) acid. 
A) light. 
B) vitamin C. 
C) oxygen. 
D) acid.

Question 20

Which lifestyle factor increases the requirement for vitamin C?

Accepted Answer

A) Drinking alcohol 
B) Exercising frequently and intensely 
C) Smoking cigarettes 
D) Eating a diet high in fiber 
A) Drinking alcohol 
B) Exercising frequently and intensely 
C) Smoking cigarettes 
D) Eating a diet high in fiber

Exam 8: The Water-Soluble Vitamins

Riboflavin forms active coenzymes that do all the following except:

Which of the following is NOT recognized as a major function of vitamin C in the body?

The RDA for B₆ in adults ____________ with aging.

Elevated homocysteine is associated with increased risk of cardiovascular disease.In clinical studies,which vitamins have been shown to decrease homocysteine levels in the blood?

Meeting vitamin B₁₂ needs from the diet is especially difficult for:

Which statement concerning vitamins is incorrect?

Vitamin C deficiency causes:

A common adverse effect of niacin toxicity is:

Biotin is tightly bound by avidin,which prevents absorption of the vitamin.Avidin is commonly found in:

Pantothenic acid is abundant in:

Pantothenic acid forms part of which molecule?

The role of folate in DNA synthesis makes it particularly important in:

Which of the following does NOT affect thiamin availability in food?

Which is the FALSE statement regarding vitamin C?

Which disease is caused by niacin deficiency?

Beriberi is a disease caused by lack of ________ in the diet.

Choline deficiency may contribute to all of the following EXCEPT:

When the vitamins lost in grain processing are restored,which is a nutrient typically NOT added back?

Riboflavin is most easily destroyed when exposed to:

Which lifestyle factor increases the requirement for vitamin C?

Nutrition: Food for Health

Nutrition Guidelines: Applying the Science of Nutrition

Digestion, Absorption, and Metabolism

Carbohydrates: Sugars, Starches, and Fiber

Lipids: Triglycerides, Phospholipids, and Cholesterol

Proteins and Amino Acids

Energy Balance and Weight Management

The Fat-Soluble Vitamins

Water and the Electrolytes

Major Minerals and Bone Health

The Trace Minerals

Nutrition and Physical Activity

Nutrition During Pregnancy and Lactation

Nutrition From Infancy to Adolescence

Nutrition and Aging: The Adult Years

Food Safety

World Hunger and Malnutrition

Focus on Alcohol

Focus on Eating Disorders

Focus on Phytochemicals

Focus on Nonvitaminnonmineral Supplements

Focus on Biotechnology

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