Question 1

What best explains why Canadians have low Vitamin A intake?

Accepted Answer

A) vitamin A rich foods are in scarce supply. 
B) people tend to choose diets which contain low amounts of vitamin A. 
C) information about vitamin A in foods is not available. 
D) vitamin A is found in summer fruits and is not available during the winter. 
A) vitamin A rich foods are in scarce supply. 
B) people tend to choose diets which contain low amounts of vitamin A. 
C) information about vitamin A in foods is not available. 
D) vitamin A is found in summer fruits and is not available during the winter. B

Question 2

Which form of vitamin A has antioxidant properties?

Accepted Answer

A) beta-carotene 
B) preformed vitamin A 
C) retinal 
D) retinoic acid 
A) beta-carotene 
B) preformed vitamin A 
C) retinal 
D) retinoic acid A

Question 3

In 2007 the Institute of Medicine revised its DRIs for vitamin D and issued new RDAs for the vitamin.Why did some scientists disagree with the new recommendations?

Accepted Answer

A) the literature on vitamin D and cancer was ignored. 
B) calcium absorption can be improved at intakes higher than those recommended 
C) 90% of Canadians had levels of vitamin D in the blood at or above the recommended levels for an adequate intake 
D) Both a & b 
A) the literature on vitamin D and cancer was ignored. 
B) calcium absorption can be improved at intakes higher than those recommended 
C) 90% of Canadians had levels of vitamin D in the blood at or above the recommended levels for an adequate intake 
D) Both a & b D

Question 4

In what units,is the recommended intake of vitamin E expressed?

Accepted Answer

A) RAE. 
B) µg. 
C) alpha-tocopherol equivalents. 
D) mg alpha-tocopherol. 
A) RAE. 
B) µg. 
C) alpha-tocopherol equivalents. 
D) mg alpha-tocopherol.

Question 5

Vitamin E-rich foods are most plentiful in which three foods?

Accepted Answer

A) nuts,fats,and vegetables 
B) fruit,dairy,and vegetables 
C) meat,fats,and fruit 
D) milk,meat,and grains 
A) nuts,fats,and vegetables 
B) fruit,dairy,and vegetables 
C) meat,fats,and fruit 
D) milk,meat,and grains

Question 6

Reduced consumption of fruits and vegetables reduces the intake of all fat-soluble vitamins except one.Which one?

Accepted Answer

A) A. 
B) D. 
C) E. 
D) K. 
A) A. 
B) D. 
C) E. 
D) K.

Question 7

Which form of vitamin A has the greatest impact on cell differentiation?

Accepted Answer

A) preformed vitamin A 
B) retinal 
C) retinoic acid 
D) retinol 
A) preformed vitamin A 
B) retinal 
C) retinoic acid 
D) retinol

Question 8

Which statement about canned vegetables is FALSE?

Accepted Answer

A) The canning process exposes vegetables to high temperatures,which reduces their nutrient content. 
B) Canned vegetables are high in salt. 
C) Canned vegetables keep for a long time without spoiling. 
D) Canned vegetables are never the right choice for a healthy diet. 
A) The canning process exposes vegetables to high temperatures,which reduces their nutrient content. 
B) Canned vegetables are high in salt. 
C) Canned vegetables keep for a long time without spoiling. 
D) Canned vegetables are never the right choice for a healthy diet.

Question 9

Deficiencies of what two vitamins are common in developing countries?

Accepted Answer

A) A;E 
B) D;K 
C) A;D 
D) E;K 
A) A;E 
B) D;K 
C) A;D 
D) E;K

Question 10

The criterion of adequacy for vitamin E is based on the amount of the vitamin needed for which function?

Accepted Answer

A) blood clotting 
B) prevention of excessive blood clotting 
C) prevention of oxidative stress in red blood cells 
D) chylomicron and VLDL formation 
A) blood clotting 
B) prevention of excessive blood clotting 
C) prevention of oxidative stress in red blood cells 
D) chylomicron and VLDL formation

Question 11

This nutrient acts as a co-enzyme for proteins involved in bone metabolism;it also functions to maintain the elasticity of blood vessels.What is being described?

Accepted Answer

A) Vitamin K 
B) Menaquinones and phylloquinones 
C) A compound that can be synthesized by microflora 
D) All of the above. 
A) Vitamin K 
B) Menaquinones and phylloquinones 
C) A compound that can be synthesized by microflora 
D) All of the above.

Question 12

What effect does cystic fibrosis have on the risk of vitamin E deficiency?

Accepted Answer

A) Risk increase because there is increased vitamin E use in the body. 
B) Risk increase because there is reduced absorption of dietary fat. 
C) Risk decrease because that is reduced vitamin E excretion from the body. 
D) Risk increase because foods that contain vitamin E develop an unpalatable flavour. 
A) Risk increase because there is increased vitamin E use in the body. 
B) Risk increase because there is reduced absorption of dietary fat. 
C) Risk decrease because that is reduced vitamin E excretion from the body. 
D) Risk increase because foods that contain vitamin E develop an unpalatable flavour.

Question 13

Why does long term use of antibiotics increase the risk of vitamin K deficiency?

Accepted Answer

A) Antibiotics interfere with absorption of the vitamin. 
B) Antibiotics prevent vitamin K from functioning properly. 
C) Antibiotics change the bacterial flora in the gut,decreasing vitamin K production. 
D) Antibiotics enhance the absorption of other vitamins which compete with vitamin K for absorption. 
A) Antibiotics interfere with absorption of the vitamin. 
B) Antibiotics prevent vitamin K from functioning properly. 
C) Antibiotics change the bacterial flora in the gut,decreasing vitamin K production. 
D) Antibiotics enhance the absorption of other vitamins which compete with vitamin K for absorption.

Question 14

Which is an anticoagulant that interferes with the action of vitamin K?

Accepted Answer

A) antibiotics 
B) aspirin 
C) dicumarol 
D) penicillin 
A) antibiotics 
B) aspirin 
C) dicumarol 
D) penicillin

Question 15

Which statement best describes vitamin E isomers?

Accepted Answer

A) Tocopherols and tocotrienols are found in in human blood in a 1:1 ratio. 
B) Alpha-tocopherol is the most common form of vitamin E detected in human blood. 
C) Tocopherols and tocotrienols are known to have identical biological functions. 
D) Gamma-tocopherol is a rare form of food-derived vitamin E. 
A) Tocopherols and tocotrienols are found in in human blood in a 1:1 ratio. 
B) Alpha-tocopherol is the most common form of vitamin E detected in human blood. 
C) Tocopherols and tocotrienols are known to have identical biological functions. 
D) Gamma-tocopherol is a rare form of food-derived vitamin E.

Question 16

Premature babies are born with low levels of a fat-soluble vitamin.How does that put them at risk for hemolytic anemia?

Accepted Answer

A) Due to low levels of vitamin E the cell membranes of red blood cells rupture. 
B) Due to low levels of vitamin D,the cell membranes of red blood cells rupture. 
C) Due to low levels of vitamin K,blot clots do not form readily. 
D) Due to low levels of vitamin E,blot clots form more than usual 
A) Due to low levels of vitamin E the cell membranes of red blood cells rupture. 
B) Due to low levels of vitamin D,the cell membranes of red blood cells rupture. 
C) Due to low levels of vitamin K,blot clots do not form readily. 
D) Due to low levels of vitamin E,blot clots form more than usual

Question 17

Which of the following statements about the destruction of vitamin E is NOT correct?

Accepted Answer

A) it can be destroyed when oil is repeatedly used in high temperature deep fat frying. 
B) it can be destroyed by exposure to oxygen. 
C) it can be destroyed during food processing and storage. 
D) it is often completely destroyed in the normal cooking process. 
A) it can be destroyed when oil is repeatedly used in high temperature deep fat frying. 
B) it can be destroyed by exposure to oxygen. 
C) it can be destroyed during food processing and storage. 
D) it is often completely destroyed in the normal cooking process.

Question 18

Which of the following foods contains the highest amount of vitamin D?

Accepted Answer

A) whole-wheat bread 
B) orange juice 
C) peanut oil 
D) fortified whole milk 
A) whole-wheat bread 
B) orange juice 
C) peanut oil 
D) fortified whole milk

Question 19

Which of the following transports vitamin A from the liver to tissues?

Accepted Answer

A) Hemoglobin 
B) Chylomicrons 
C) Opsin 
D) Retinol-binding protein 
A) Hemoglobin 
B) Chylomicrons 
C) Opsin 
D) Retinol-binding protein

Question 20

Which is NOT a consequence of excessive intake of vitamin A from supplements?

Accepted Answer

A) toxicity. 
B) birth defects. 
C) increased incidence of bone fracture. 
D) acne. 
A) toxicity. 
B) birth defects. 
C) increased incidence of bone fracture. 
D) acne.

Exam 9: The Fat-Soluble Vitamins

What best explains why Canadians have low Vitamin A intake?

Which form of vitamin A has antioxidant properties?

In 2007 the Institute of Medicine revised its DRIs for vitamin D and issued new RDAs for the vitamin.Why did some scientists disagree with the new recommendations?

In what units,is the recommended intake of vitamin E expressed?

Vitamin E-rich foods are most plentiful in which three foods?

Reduced consumption of fruits and vegetables reduces the intake of all fat-soluble vitamins except one.Which one?

Which form of vitamin A has the greatest impact on cell differentiation?

Which statement about canned vegetables is FALSE?

Deficiencies of what two vitamins are common in developing countries?

The criterion of adequacy for vitamin E is based on the amount of the vitamin needed for which function?

This nutrient acts as a co-enzyme for proteins involved in bone metabolism;it also functions to maintain the elasticity of blood vessels.What is being described?

What effect does cystic fibrosis have on the risk of vitamin E deficiency?

Why does long term use of antibiotics increase the risk of vitamin K deficiency?

Which is an anticoagulant that interferes with the action of vitamin K?

Which statement best describes vitamin E isomers?

Premature babies are born with low levels of a fat-soluble vitamin.How does that put them at risk for hemolytic anemia?

Which of the following statements about the destruction of vitamin E is NOT correct?

Which of the following foods contains the highest amount of vitamin D?

Which of the following transports vitamin A from the liver to tissues?

Which is NOT a consequence of excessive intake of vitamin A from supplements?

Nutrition: Food for Health

Nutrition Guidelines: Applying the Science of Nutrition

Digestion, Absorption, and Metabolism

Carbohydrates: Sugars, Starches, and Fibre

Lipids

Proteins and Amino Acids

Energy Balance and Weight Management

A: the Water-Soluble Vitamins

Water and the Electrolytes

Major Minerals and Bone Health

The Trace Elements

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 1: Focus on Beyond the Basics

Focus 2: Focus on Alcohol

Focus 3: Focus on Obesity, Metabolism, and Disease Risk

Focus 4: Focus on Phytochemicals

Focus5:focus on Natural Health Products

Focus 6: Focus on Integrating Nutrient Function in the Body

Focus 7: Focus on Eating Disorders

Focus 8: Focus on Biotechnology

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