Question 1

The primary function of vitamin C in cellular metabolism is to

Accepted Answer

A) synthesize collagen. 
B) add hydroxyl groups to the amino acid proline. 
C) act as nonspecific reducing agent (electron donor). 
D) maintain iron in its reduced form in the formation of collagen. 
A) synthesize collagen. 
B) add hydroxyl groups to the amino acid proline. 
C) act as nonspecific reducing agent (electron donor). 
D) maintain iron in its reduced form in the formation of collagen.

Question 2

Which of the following B-vitamins is found in the widest variety of foods (i.e.,different food groups such as vegetables,grains,meat)?

Accepted Answer

A) vitamin C 
B) vitamin B-12 
C) pantothenic acid 
D) All of these choices are accurate. 
A) vitamin C 
B) vitamin B-12 
C) pantothenic acid 
D) All of these choices are accurate.

Question 3

Nutritionally,the difference between brown rice and white rice is

Accepted Answer

A) the presence of bran and germ layers in the brown rice,which have most of the nutrients. 
B) negligible.There is a little more thiamin in white rice than brown rice. 
C) fiber content.White rice has more fiber. 
D) there is more thiamin and fiber in white rice. 
A) the presence of bran and germ layers in the brown rice,which have most of the nutrients. 
B) negligible.There is a little more thiamin in white rice than brown rice. 
C) fiber content.White rice has more fiber. 
D) there is more thiamin and fiber in white rice.

Question 4

The fact that the amino acid tryptophan can be converted to niacin by the body explains why

Accepted Answer

A) diets high in protein could prevent or cure pellagra. 
B) corn-based diets prevent pellagra. 
C) gelatin cures pellagra. 
D) alcoholics sometimes develop Wernicke-Korsakoff syndrome. 
A) diets high in protein could prevent or cure pellagra. 
B) corn-based diets prevent pellagra. 
C) gelatin cures pellagra. 
D) alcoholics sometimes develop Wernicke-Korsakoff syndrome.

Question 5

The protein in raw egg whites that can bind biotin is called

Accepted Answer

A) avidin. 
B) salmonella. 
C) casein. 
D) keratin. 
A) avidin. 
B) salmonella. 
C) casein. 
D) keratin.

Question 6

The amino acids _______ and ________ are hydroxylated with the aid of vitamin C to form strong connective tissue.

Accepted Answer

A) proline; lysine 
B) glutamic acid; alanine 
C) threonine; methionine 
D) methionine; homocysteine 
A) proline; lysine 
B) glutamic acid; alanine 
C) threonine; methionine 
D) methionine; homocysteine

Question 7

To calculate the DFE for the diet,multiply total synthetic folic acid intake by ____; add that value to the total food folate.

Accepted Answer

A) 1.7 
B) 2.5 
C) 4.0 
D) None of these choices are accurate. 
A) 1.7 
B) 2.5 
C) 4.0 
D) None of these choices are accurate.

Question 8

The niacin coenzyme is reduced (NAD+ $\rightarrow$ NADH + H+)during

Accepted Answer

A) glycolysis. 
B) the pyruvate decarboxylation reaction. 
C) the citric acid cycle. 
D) All of these choices are accurate. 
A) glycolysis. 
B) the pyruvate decarboxylation reaction. 
C) the citric acid cycle. 
D) All of these choices are accurate.

Question 9

The nutrients added to enriched grains typically include

Accepted Answer

A) all of the B vitamins. 
B) vitamin C,pantothenic acid,folic acid,and zinc. 
C) thiamin,riboflavin,niacin,folic acid,and iron. 
D) vitamin B-6,folic acid,vitamin B-12,and iron. 
A) all of the B vitamins. 
B) vitamin C,pantothenic acid,folic acid,and zinc. 
C) thiamin,riboflavin,niacin,folic acid,and iron. 
D) vitamin B-6,folic acid,vitamin B-12,and iron.

Question 10

Riboflavin coenzymes function in a variety of metabolic pathways,such as

Accepted Answer

A) beta-oxidation of fatty acids. 
B) the citric acid cycle. 
C) the electron transport chain. 
D) All of these choices are accurate. 
A) beta-oxidation of fatty acids. 
B) the citric acid cycle. 
C) the electron transport chain. 
D) All of these choices are accurate.

Question 11

Which group of foods provides substantial amounts of vitamin C?

Accepted Answer

A) Citrus fruits and vegetables 
B) Milk and dairy products 
C) Beef,poultry,seafood 
D) Breads and cereals 
A) Citrus fruits and vegetables 
B) Milk and dairy products 
C) Beef,poultry,seafood 
D) Breads and cereals

Question 12

Red blood cells turn over every

Accepted Answer

A) 20 minutes. 
B) 20 hours. 
C) 2 months. 
D) 120 days. 
A) 20 minutes. 
B) 20 hours. 
C) 2 months. 
D) 120 days.

Question 13

Good sources of folate include

Accepted Answer

A) enriched cereals and grains. 
B) leafy green vegetables. 
C) oranges. 
D) dried beans. 
E) All of these choices are accurate. 
A) enriched cereals and grains. 
B) leafy green vegetables. 
C) oranges. 
D) dried beans. 
E) All of these choices are accurate.

Question 14

In a dietary deficiency of folate,there are decreasing numbers of mature red blood cells to carry the oxygen from the lungs to the tissues.This condition is known as

Accepted Answer

A) achlorhydria. 
B) megaloblastic anemia. 
C) ariboflavinosis. 
D) hemorrhagic disease. 
A) achlorhydria. 
B) megaloblastic anemia. 
C) ariboflavinosis. 
D) hemorrhagic disease.

Question 15

Symptoms of vitamin B-6 deficiency include

Accepted Answer

A) depression,confusion,and convulsions. 
B) microcytic anemia. 
C) dermatitis. 
D) All of these choices are accurate. 
A) depression,confusion,and convulsions. 
B) microcytic anemia. 
C) dermatitis. 
D) All of these choices are accurate.

Question 16

A major role of vitamin B-12 in cellular metabolism is

Accepted Answer

A) transfer of a methyl group to the amino acid homocysteine,forming the amino acid methionine. 
B) transfer of a methyl group to the pyrimidine uracil,forming the pyrimidine thymine. 
C) in transamination reactions,allowing the synthesis of nonessential amino acids. 
D) as an electron acceptor,allowing function of the electron transport chain. 
A) transfer of a methyl group to the amino acid homocysteine,forming the amino acid methionine. 
B) transfer of a methyl group to the pyrimidine uracil,forming the pyrimidine thymine. 
C) in transamination reactions,allowing the synthesis of nonessential amino acids. 
D) as an electron acceptor,allowing function of the electron transport chain.

Question 17

It is very difficult to consume excess folic acid from nonprescription vitamin supplements because

Accepted Answer

A) folic acid is never included in over-the-counter nutrient supplements. 
B) the FDA limits the amount of folic acid in supplements to 400 micrograms per capsule. 
C) folic acid in pill form imparts an unpleasant taste so that no one would ever attempt to take extra amounts. 
D) absorption of the vitamin is age-related.As we get older we automatically adjust the amount we absorb to more than the maximum level. 
A) folic acid is never included in over-the-counter nutrient supplements. 
B) the FDA limits the amount of folic acid in supplements to 400 micrograms per capsule. 
C) folic acid in pill form imparts an unpleasant taste so that no one would ever attempt to take extra amounts. 
D) absorption of the vitamin is age-related.As we get older we automatically adjust the amount we absorb to more than the maximum level.

Question 18

To protect riboflavin from destruction by sunlight,milk and milk products are packaged in

Accepted Answer

A) clear glass bottles. 
B) paper and opaque plastic cartons. 
C) clear plastic bottles and cartons. 
D) any kind of container. 
A) clear glass bottles. 
B) paper and opaque plastic cartons. 
C) clear plastic bottles and cartons. 
D) any kind of container.

Question 19

Biochemical reactions that add CO2 to compounds often require

Accepted Answer

A) folic acid. 
B) thiamin. 
C) biotin. 
D) vitamin B-12. 
A) folic acid. 
B) thiamin. 
C) biotin. 
D) vitamin B-12.

Question 20

A deficiency of thiamin that affects the cardiovascular,muscular,nervous,and gastrointestinal systems is called

Accepted Answer

A) megaloblastic anemia. 
B) pellagra. 
C) scurvy. 
D) beriberi. 
A) megaloblastic anemia. 
B) pellagra. 
C) scurvy. 
D) beriberi.

The primary function of vitamin C in cellular metabolism is to

Which of the following B-vitamins is found in the widest variety of foods (i.e.,different food groups such as vegetables,grains,meat)?

Nutritionally,the difference between brown rice and white rice is

The fact that the amino acid tryptophan can be converted to niacin by the body explains why

The protein in raw egg whites that can bind biotin is called

The amino acids _ and __ are hydroxylated with the aid of vitamin C to form strong connective tissue.

To calculate the DFE for the diet,multiply total synthetic folic acid intake by ____; add that value to the total food folate.

The niacin coenzyme is reduced (NAD⁺ $\rightarrow$ NADH + H⁺)during

The nutrients added to enriched grains typically include

Riboflavin coenzymes function in a variety of metabolic pathways,such as

Which group of foods provides substantial amounts of vitamin C?

Red blood cells turn over every

Good sources of folate include

In a dietary deficiency of folate,there are decreasing numbers of mature red blood cells to carry the oxygen from the lungs to the tissues.This condition is known as

Symptoms of vitamin B-6 deficiency include

A major role of vitamin B-12 in cellular metabolism is

It is very difficult to consume excess folic acid from nonprescription vitamin supplements because

To protect riboflavin from destruction by sunlight,milk and milk products are packaged in

Biochemical reactions that add CO₂ to compounds often require

A deficiency of thiamin that affects the cardiovascular,muscular,nervous,and gastrointestinal systems is called

The Science of Nutrition

Tools of a Healthy Diet

The Food Supply

Human Digestion and Absorption

Carbohydrates

Lipids

Proteins

Alcohol

Energy Metabolism

Energy Balance, weight Control, and Eating Disorders

Nutrition, exercise and Sports

The Fat-Soluble Vitamins

Water and Major Minerals

Trace Minerals

Nutritional Aspects of Pregnancy and Breastfeeding

Nutrition During the Growing Years

Nutrition During the Adult Years

Filters

Exam 13: The Water-Soluble Vitamins

The primary function of vitamin C in cellular metabolism is to

Which of the following B-vitamins is found in the widest variety of foods (i.e.,different food groups such as vegetables,grains,meat)?

Nutritionally,the difference between brown rice and white rice is

The fact that the amino acid tryptophan can be converted to niacin by the body explains why

The protein in raw egg whites that can bind biotin is called

The amino acids _______ and ________ are hydroxylated with the aid of vitamin C to form strong connective tissue.

To calculate the DFE for the diet,multiply total synthetic folic acid intake by ____; add that value to the total food folate.

The niacin coenzyme is reduced (NAD+ →\rightarrow→ NADH + H+)during

The nutrients added to enriched grains typically include

Riboflavin coenzymes function in a variety of metabolic pathways,such as

Which group of foods provides substantial amounts of vitamin C?

Red blood cells turn over every

Good sources of folate include

In a dietary deficiency of folate,there are decreasing numbers of mature red blood cells to carry the oxygen from the lungs to the tissues.This condition is known as

Symptoms of vitamin B-6 deficiency include

A major role of vitamin B-12 in cellular metabolism is

It is very difficult to consume excess folic acid from nonprescription vitamin supplements because

To protect riboflavin from destruction by sunlight,milk and milk products are packaged in

Biochemical reactions that add CO2 to compounds often require

A deficiency of thiamin that affects the cardiovascular,muscular,nervous,and gastrointestinal systems is called

The Science of Nutrition

Tools of a Healthy Diet

The Food Supply

Human Digestion and Absorption

Carbohydrates

Lipids

Proteins

Alcohol

Energy Metabolism

Energy Balance, weight Control, and Eating Disorders

Nutrition, exercise and Sports

The Fat-Soluble Vitamins

Water and Major Minerals

Trace Minerals

Nutritional Aspects of Pregnancy and Breastfeeding

Nutrition During the Growing Years

Nutrition During the Adult Years

Filters

The amino acids _ and __ are hydroxylated with the aid of vitamin C to form strong connective tissue.

The niacin coenzyme is reduced (NAD⁺ $\rightarrow$ NADH + H⁺)during

Biochemical reactions that add CO₂ to compounds often require