Question 1

Which is NOT a symptom of vitamin A deficiency?

Accepted Answer

A) Incomplete differentiation of epithelial cells. 
B) Formation of hard protein found in hair and fingernails. 
C) Excessive mucus production by epithelial cells. 
D) Increased rate of infection. 
A) Incomplete differentiation of epithelial cells. 
B) Formation of hard protein found in hair and fingernails. 
C) Excessive mucus production by epithelial cells. 
D) Increased rate of infection.

Question 2

Which of the following foods is NOT considered a good source of vitamin E?

Accepted Answer

A) peanuts 
B) soybean oil 
C) whole grains 
D) orange and yellow vegetables 
A) peanuts 
B) soybean oil 
C) whole grains 
D) orange and yellow vegetables

Question 3

Which statement best describes the difference between supplemental and food-based vitamin E?

Accepted Answer

A) food-based alpha-tocopherol is about twice as active as the form most commonly used in supplements. 
B) synthetic vitamin E,which is typically found in supplements,is chemically identical to vitamin E found in food. 
C) The most common form vitamin E found in supplements is gamma-tocopherol. 
D) Supplemental forms of vitamin E are 8 times as active as natural forms. 
A) food-based alpha-tocopherol is about twice as active as the form most commonly used in supplements. 
B) synthetic vitamin E,which is typically found in supplements,is chemically identical to vitamin E found in food. 
C) The most common form vitamin E found in supplements is gamma-tocopherol. 
D) Supplemental forms of vitamin E are 8 times as active as natural forms.

Question 4

Why is the risk of toxicity greater for fat-soluble vitamins than water-soluble vitamins?

Accepted Answer

A) Fat-soluble vitamins are excreted in the urine along with water-soluble vitamins. 
B) Fat-soluble vitamins are stored in the liver while water-soluble vitamins are not. 
C) Unlike water-soluble vitamins,fat-soluble vitamins are not readily excreted and can accumulate in tissue. 
D) Fat-soluble vitamins,in supplement form,are more bioavailable,compared to water-soluble vitamins. 
A) Fat-soluble vitamins are excreted in the urine along with water-soluble vitamins. 
B) Fat-soluble vitamins are stored in the liver while water-soluble vitamins are not. 
C) Unlike water-soluble vitamins,fat-soluble vitamins are not readily excreted and can accumulate in tissue. 
D) Fat-soluble vitamins,in supplement form,are more bioavailable,compared to water-soluble vitamins.

Question 5

"A syndrome characterized by bone deformities in children,and caused by vitamin D deficiency." What is being described?

Accepted Answer

A) rickets. 
B) xerophthalmia. 
C) keratomalacia. 
D) osteomalacia. 
A) rickets. 
B) xerophthalmia. 
C) keratomalacia. 
D) osteomalacia.

Question 6

Cell differentiation is most affected by which of the following vitamins?

Accepted Answer

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

Question 7

When vitamin A is deficient there is a delay in the regeneration of the visual pigment.Which of the following statements is FALSE?

Accepted Answer

A) This condition is called night blindness. 
B) This causes difficulty adapting to dim light after exposure to bright light. 
C) This is one of the first signs of a vitamin A deficiency. 
D) This condition is irreversible. 
A) This condition is called night blindness. 
B) This causes difficulty adapting to dim light after exposure to bright light. 
C) This is one of the first signs of a vitamin A deficiency. 
D) This condition is irreversible.

Question 8

Vitamin D intake recommendations are based on the amount needed in the diet to maintain which of the following?

Accepted Answer

A) blood levels sufficient for the maintenance of bone health. 
B) adequate calcium levels in the blood. 
C) the same amount that might be synthesized by sunlight. 
D) enough to regulate the immune system. 
A) blood levels sufficient for the maintenance of bone health. 
B) adequate calcium levels in the blood. 
C) the same amount that might be synthesized by sunlight. 
D) enough to regulate the immune system.

Question 9

Labels on vitamin E supplements recommend users consult a health care practitioner if they have one of several health-related conditions.Which is NOT one of those conditions?

Accepted Answer

A) Use of blood thinning medication. 
B) presence of neurological disorders 
C) presence of cancer. 
D) presence of diabetes. 
A) Use of blood thinning medication. 
B) presence of neurological disorders 
C) presence of cancer. 
D) presence of diabetes.

Question 10

When consumption of a macronutrient is insufficient,vitamin A absorption is reduced.Which macronutrient?

Accepted Answer

A) protein 
B) fat 
C) carbohydrate 
D) water 
A) protein 
B) fat 
C) carbohydrate 
D) water

Question 11

Children in developing nations are most likely to develop deficiency symptoms associated with which of the following?

Accepted Answer

A) vitamin A 
B) vitamin D 
C) vitamin E 
D) vitamin K 
A) vitamin A 
B) vitamin D 
C) vitamin E 
D) vitamin K

Question 12

Why are vitamin D supplements recommended for breastfed babies?

Accepted Answer

A) Breast milk contains low levels of vitamin D 
B) The immature digestive tract of a newborn infant cannot absorb vitamin D. 
C) Newborn infants spend large amounts of time in the sun. 
D) Vitamin D biosynthesis in the skin is inefficient. 
A) Breast milk contains low levels of vitamin D 
B) The immature digestive tract of a newborn infant cannot absorb vitamin D. 
C) Newborn infants spend large amounts of time in the sun. 
D) Vitamin D biosynthesis in the skin is inefficient.

Question 13

Which statement about vitamin D toxicity is FALSE?

Accepted Answer

A) It can be caused by too much sunlight. 
B) It can be caused by over supplementation or over consumption of fortified foods. 
C) It results in the deposition of calcium in soft tissues. 
D) It causes cardiovascular damage. 
A) It can be caused by too much sunlight. 
B) It can be caused by over supplementation or over consumption of fortified foods. 
C) It results in the deposition of calcium in soft tissues. 
D) It causes cardiovascular damage.

Question 14

Which statement about cholecalciferol is FALSE?

Accepted Answer

A) It is the chemical name for vitamin D3. 
B) It is formed,by sunlight,in the skin of animals. 
C) It issynthesized from a cholesterol derivative. 
D) It is destroyed by UV light. 
A) It is the chemical name for vitamin D3. 
B) It is formed,by sunlight,in the skin of animals. 
C) It issynthesized from a cholesterol derivative. 
D) It is destroyed by UV light.

Question 15

Vitamin A is unstable when exposed to which of the following?

Accepted Answer

A) heat. 
B) light. 
C) lack of oxygen. 
D) fat. 
A) heat. 
B) light. 
C) lack of oxygen. 
D) fat.

Question 16

Which of the following statements regarding vitamin D is FALSE?

Accepted Answer

A) The ability to synthesize vitamin D in the skin decreases with age. 
B) Vitamin D is naturally occurring in many foods. 
C) Vitamin D deficiency is common in adults with kidney failure. 
D) Too much vitamin D can cause elevated blood calcium levels. 
A) The ability to synthesize vitamin D in the skin decreases with age. 
B) Vitamin D is naturally occurring in many foods. 
C) Vitamin D deficiency is common in adults with kidney failure. 
D) Too much vitamin D can cause elevated blood calcium levels.

Question 17

Fat-soluble vitamins are transported from the intestine to the blood stream in what particle?

Accepted Answer

A) chylomicrons. 
B) very low-density lipoproteins. 
C) low-density lipoproteins. 
D) high-density lipoproteins. 
A) chylomicrons. 
B) very low-density lipoproteins. 
C) low-density lipoproteins. 
D) high-density lipoproteins.

Question 18

What compound forms when sunlight acts on 7-dehydrocholesterol?

Accepted Answer

A) cholecalciferol. 
B) retinol. 
C) parathyroid hormone. 
D) 25-hydroxy vitamin D. 
A) cholecalciferol. 
B) retinol. 
C) parathyroid hormone. 
D) 25-hydroxy vitamin D.

Question 19

Derivatives of vitamin A are used in the drugs Retin A and Accutane.Which statement about these drugs is FALSE?

Accepted Answer

A) Retin A can reduce wrinkles in skin. 
B) These drugs can treat acne. 
C) These drugs are derivatives of vitamin A. 
D) These drugs are safer than vitamin A supplements since no toxicity is associated with them. 
A) Retin A can reduce wrinkles in skin. 
B) These drugs can treat acne. 
C) These drugs are derivatives of vitamin A. 
D) These drugs are safer than vitamin A supplements since no toxicity is associated with them.

Question 20

Which form of vitamin A is involved in vision?

Accepted Answer

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

Exam 9: The Fat-Soluble Vitamins

Which is NOT a symptom of vitamin A deficiency?

Which of the following foods is NOT considered a good source of vitamin E?

Which statement best describes the difference between supplemental and food-based vitamin E?

Why is the risk of toxicity greater for fat-soluble vitamins than water-soluble vitamins?

"A syndrome characterized by bone deformities in children,and caused by vitamin D deficiency." What is being described?

Cell differentiation is most affected by which of the following vitamins?

When vitamin A is deficient there is a delay in the regeneration of the visual pigment.Which of the following statements is FALSE?

Vitamin D intake recommendations are based on the amount needed in the diet to maintain which of the following?

Labels on vitamin E supplements recommend users consult a health care practitioner if they have one of several health-related conditions.Which is NOT one of those conditions?

When consumption of a macronutrient is insufficient,vitamin A absorption is reduced.Which macronutrient?

Children in developing nations are most likely to develop deficiency symptoms associated with which of the following?

Why are vitamin D supplements recommended for breastfed babies?

Which statement about vitamin D toxicity is FALSE?

Which statement about cholecalciferol is FALSE?

Vitamin A is unstable when exposed to which of the following?

Which of the following statements regarding vitamin D is FALSE?

Fat-soluble vitamins are transported from the intestine to the blood stream in what particle?

What compound forms when sunlight acts on 7-dehydrocholesterol?

Derivatives of vitamin A are used in the drugs Retin A and Accutane.Which statement about these drugs is FALSE?

Which form of vitamin A is involved in vision?

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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