Question 1

Smoking increases the need for vitamin C.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following foods are the richest sources of vitamin E?

Accepted Answer

A) milk and dairy products 
B) fruits and vegetables 
C) meat,fish,and poultry 
D) vegetable oils 
A) milk and dairy products 
B) fruits and vegetables 
C) meat,fish,and poultry 
D) vegetable oils

Question 3

Which of the following is the best source of vitamin C?

Accepted Answer

A) citrus fruit 
B) pork chops 
C) hazel nuts 
D) butter 
A) citrus fruit 
B) pork chops 
C) hazel nuts 
D) butter

Question 4

Which of the following diseases has been linked to free radical damage?

Accepted Answer

A) cancer 
B) celiac disease 
C) anemia 
D) gallstones 
A) cancer 
B) celiac disease 
C) anemia 
D) gallstones

Question 5

Where in the body is selenium contained?

Accepted Answer

A) in the liver 
B) in adipose tissue 
C) in the lymph system 
D) in amino acids 
A) in the liver 
B) in adipose tissue 
C) in the lymph system 
D) in amino acids

Question 6

Provitamins are:

Accepted Answer

A) vitamins with overwhelmingly positive effects when taken in the correct amounts. 
B) inactive forms of vitamins that the body cannot use until they're converted to their active form. 
C) prooxidents that have taken a new form. 
D) vitamins with antioxidant properties. 
A) vitamins with overwhelmingly positive effects when taken in the correct amounts. 
B) inactive forms of vitamins that the body cannot use until they're converted to their active form. 
C) prooxidents that have taken a new form. 
D) vitamins with antioxidant properties.

Question 7

How do antioxidant vitamins stabilize free radicals?

Accepted Answer

A) donate electrons or hydrogens 
B) enzymatic destruction 
C) phagocytosis 
D) break down and convert them to less damaging molecules 
A) donate electrons or hydrogens 
B) enzymatic destruction 
C) phagocytosis 
D) break down and convert them to less damaging molecules

Question 8

Which of the following hormones requires selenium for its synthesis?

Accepted Answer

A) estrogen 
B) insulin 
C) cortisol 
D) thyroxine 
A) estrogen 
B) insulin 
C) cortisol 
D) thyroxine

Question 9

Where is beta-carotene converted to retinol?

Accepted Answer

A) in the stomach 
B) in the liver 
C) in the small intestine 
D) in the large intestine 
A) in the stomach 
B) in the liver 
C) in the small intestine 
D) in the large intestine

Question 10

Research studies have demonstrated an association between a reduced risk for cancer and:

Accepted Answer

A) the use of vitamin C supplements. 
B) increased consumption of fruits and vegetables. 
C) increased consumption of monounsaturated fatty acids. 
D) the use of beta-carotene supplements. 
A) the use of vitamin C supplements. 
B) increased consumption of fruits and vegetables. 
C) increased consumption of monounsaturated fatty acids. 
D) the use of beta-carotene supplements.

Question 11

Taking megadoses of vitamin C is fatal.

Accepted Answer

A) True 
 B)False

Question 12

True ________ deficiencies are uncommon in humans.

Accepted Answer

A) beta-carotene 
B) vitamin A 
C) vitamin C 
D) vitamin E 
A) beta-carotene 
B) vitamin A 
C) vitamin C 
D) vitamin E

Question 13

Compared to vitamin E,beta-carotene is:

Accepted Answer

A) a relatively weak antioxidant. 
B) more easily absorbed and utilized by the body. 
C) a better choice for people with GI tract problems. 
D) a stronger antioxidant. 
A) a relatively weak antioxidant. 
B) more easily absorbed and utilized by the body. 
C) a better choice for people with GI tract problems. 
D) a stronger antioxidant.

Question 14

Absorption of which mineral is enhanced by vitamin C?

Accepted Answer

A) iron 
B) copper 
C) selenium 
D) calcium 
A) iron 
B) copper 
C) selenium 
D) calcium

Question 15

Vitamin C assists in the formation of the structural protein called ________.

Accepted Answer

A) elastin 
B) collagen 
C) titan 
D) ostiod 
A) elastin 
B) collagen 
C) titan 
D) ostiod

Question 16

Glutathione peroxidase is a free radical formed from oxidative metabolism.

Accepted Answer

A) True 
 B)False

Question 17

Antioxidants ________ an electron or hydrogen atom to stabilize a free radical.

Accepted Answer

A) take on 
B) eliminate 
C) donate 
D) transform 
A) take on 
B) eliminate 
C) donate 
D) transform

Question 18

The specific term for substances that can cause cancer is:

Accepted Answer

A) free radicals. 
B) tumors. 
C) carcinogens. 
D) mutations. 
A) free radicals. 
B) tumors. 
C) carcinogens. 
D) mutations.

Question 19

From what source does our body obtain the majority of its antioxidants?

Accepted Answer

A) from sunlight 
B) from the by-products of healthy metabolism 
C) from the diet 
D) gastrointestinal microflora 
A) from sunlight 
B) from the by-products of healthy metabolism 
C) from the diet 
D) gastrointestinal microflora

Question 20

The retinoid that has the most significant physiological role in the human body is:

Accepted Answer

A) retinol. 
B) retinoic acid. 
C) retinal. 
D) beta-carotene. 
A) retinol. 
B) retinoic acid. 
C) retinal. 
D) beta-carotene.

Exam 14: Nutrients Involved in Antioxidant Function and Vision

Smoking increases the need for vitamin C.

Which of the following foods are the richest sources of vitamin E?

Which of the following is the best source of vitamin C?

Which of the following diseases has been linked to free radical damage?

Where in the body is selenium contained?

Provitamins are:

How do antioxidant vitamins stabilize free radicals?

Which of the following hormones requires selenium for its synthesis?

Where is beta-carotene converted to retinol?

Research studies have demonstrated an association between a reduced risk for cancer and:

Taking megadoses of vitamin C is fatal.

True ________ deficiencies are uncommon in humans.

Compared to vitamin E,beta-carotene is:

Absorption of which mineral is enhanced by vitamin C?

Vitamin C assists in the formation of the structural protein called ________.

Glutathione peroxidase is a free radical formed from oxidative metabolism.

Antioxidants ________ an electron or hydrogen atom to stabilize a free radical.

The specific term for substances that can cause cancer is:

From what source does our body obtain the majority of its antioxidants?

The retinoid that has the most significant physiological role in the human body is:

The Science of Nutrition: Linking Food, function, and Health

Designing a Healthful Diet

The Human Body: Are We Really What We Eat

Carbohydrates: Plant-Derived Energy Nutrients

in Depth: Alcohol

Lipids: Essential Energy-Supplying Nutrients

Vitamins and Minerals: Micronutrients With Macro Powers

Phytochemicals

Disordered Eating

Proteins: Crucial Components of All Body Tissues

Metabolism: From Food to Life

Nutrients Involved in Energy Metabolism

Nutrients Involved in Fluid and Electrolyte Balance

Nutrients Involved in Bone Health

Nutrients Involved in Blood Health and Immunity

Achieving and Maintaining a Healthful Body Weight

Nutrition and Physical Activity: Keys to Good Health

Consumer Issues: Food Safety, Production, and Impact on the Environment

Nutrition Through the Life Cycle: Pregnancy and the First Year of Life

Nutrition Through the Life Cycle: Childhood and Adolescence

Nutrition Through the Life Cycle: The Later Years

Global Nutrition

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