Question 1

In the case of sickle cell anemia, the slight alterations in the DNA of red blood cells lead to

Accepted Answer

A)  defects in the membranes of these cells. 
B)  changes in the structure of the protein hemoglobin. 
C)  poor use of glucose for energy. 
D)  inability of the cells to make protein. 
A)  defects in the membranes of these cells. 
B)  changes in the structure of the protein hemoglobin. 
C)  poor use of glucose for energy. 
D)  inability of the cells to make protein. B

Question 2

In proteins, amino acids are joined by _______________ bonds.

Accepted Answer

A)  amino 
B)  peptide 
C)  proteolytic 
D)  nitrogen 
A)  amino 
B)  peptide 
C)  proteolytic 
D)  nitrogen B

Question 3

Treating a protein with acid, heat, or agitation will cause _______________, meaning that the three-dimensional structure of the protein has been altered.

Accepted Answer

A)  alteration 
B)  breakdown 
C)  destruction 
D)  denaturation 
A)  alteration 
B)  breakdown 
C)  destruction 
D)  denaturation D

Question 4

The chemical element found in all amino acids but not found in either carbohydrates or fats is

Accepted Answer

A)  carbon. 
B)  nitrogen. 
C)  oxygen. 
D)  hydrogen. 
A)  carbon. 
B)  nitrogen. 
C)  oxygen. 
D)  hydrogen.

Question 5

All of the following describe kwashiorkor and marasmus except

Accepted Answer

A)  forms of protein-energy malnutrition. 
B)  common in developing nations. 
C)  created by political, economic, geographic, social, and dietary factors. 
D)  diseases that are troublesome but not life threatening. 
A)  forms of protein-energy malnutrition. 
B)  common in developing nations. 
C)  created by political, economic, geographic, social, and dietary factors. 
D)  diseases that are troublesome but not life threatening.

Question 6

The chemical bond joining adjacent amino acids is called a(n) _____________ bond.

Accepted Answer

A)  glycosidic 
B)  ionic 
C)  amino 
D)  peptide 
A)  glycosidic 
B)  ionic 
C)  amino 
D)  peptide

Question 7

The child with marasmus has all of the following conditions except

Accepted Answer

A)  skin-and-bones appearance. 
B)  often less than age 2. 
C)  can suffer impaired brain growth and development. 
D)  edema in the abdomen and legs. 
A)  skin-and-bones appearance. 
B)  often less than age 2. 
C)  can suffer impaired brain growth and development. 
D)  edema in the abdomen and legs.

Question 8

The typical American diet supplies approximately what percentage of protein as essential amino acids?

Accepted Answer

A)  10% 
B)  25% 
C)  40% 
D)  50% 
A)  10% 
B)  25% 
C)  40% 
D)  50%

Question 9

When there is a need for increased dietary protein during pregnancy or lactation, which foodstuff would be least desirable?

Accepted Answer

A)  Eggs 
B)  Dried beans 
C)  Gelatin 
D)  Beef 
A)  Eggs 
B)  Dried beans 
C)  Gelatin 
D)  Beef

Question 10

What is meant by the amino acid sequence of a protein?

Accepted Answer

A)  Number of side chains in the protein 
B)  Folding arrangement of the peptide chain 
C)  Order of appearance of amino acids in the peptide chain 
D)  Order of appearance of only the essential amino acids in the protein 
A)  Number of side chains in the protein 
B)  Folding arrangement of the peptide chain 
C)  Order of appearance of amino acids in the peptide chain 
D)  Order of appearance of only the essential amino acids in the protein

Question 11

Plant proteins do not match our needs for essential amino acids and therefore are called _______________ proteins.

Accepted Answer

A)  nonessential 
B)  uncomplemetary 
C)  incomplete 
D)  branched-chain 
A)  nonessential 
B)  uncomplemetary 
C)  incomplete 
D)  branched-chain

Question 12

Food proteins are used most efficiently when we

Accepted Answer

A)  are eating a very low kilocalorie diet. 
B)  eat large quantities of protein even though our kilocalorie intake may be low. 
C)  are consuming enough carbohydrates and fats to meet our kilocalorie needs. 
D)  are eating enough fat even though carbohydrate intake may be low. 
A)  are eating a very low kilocalorie diet. 
B)  eat large quantities of protein even though our kilocalorie intake may be low. 
C)  are consuming enough carbohydrates and fats to meet our kilocalorie needs. 
D)  are eating enough fat even though carbohydrate intake may be low.

Question 13

Which of the following is not true about the events during and after absorption of the products of protein digestion?

Accepted Answer

A)  Most protein eaten ends up as individual amino acids in the blood. 
B)  Small peptides are digested further to amino acids inside the absorptive cells of the small intestine. 
C)  Many whole proteins are absorbed and enter the blood. 
D)  Amino acids travel to the liver via the portal vein. 
A)  Most protein eaten ends up as individual amino acids in the blood. 
B)  Small peptides are digested further to amino acids inside the absorptive cells of the small intestine. 
C)  Many whole proteins are absorbed and enter the blood. 
D)  Amino acids travel to the liver via the portal vein.

Question 14

The most reliable source of vitamin B12 for the vegan would be

Accepted Answer

A)  fortified soybean milk. 
B)  milk. 
C)  cheese. 
D)  eggs. 
A)  fortified soybean milk. 
B)  milk. 
C)  cheese. 
D)  eggs.

Question 15

Which of the following is true about protein intake in the United States?

Accepted Answer

A)  Plant sources of protein predominate in the United States. 
B)  We eat less animal sources of protein than people in Asia and Africa. 
C)  About 70 percent of the protein we eat in the United States comes from animal products. 
D)  Chicken is our main animal source of protein. 
A)  Plant sources of protein predominate in the United States. 
B)  We eat less animal sources of protein than people in Asia and Africa. 
C)  About 70 percent of the protein we eat in the United States comes from animal products. 
D)  Chicken is our main animal source of protein.

Question 16

Antibodies are

Accepted Answer

A)  hormones. 
B)  enzymes. 
C)  lipoproteins. 
D)  proteins. 
A)  hormones. 
B)  enzymes. 
C)  lipoproteins. 
D)  proteins.

Question 17

Which of the following is a food that provides all of the essential amino acids?

Accepted Answer

A)  Wheat 
B)  Peanut butter 
C)  Navy beans 
D)  Milk 
A)  Wheat 
B)  Peanut butter 
C)  Navy beans 
D)  Milk

Question 18

Because the DNA cannot leave the nucleus to get to the ribosomes, the genes for proteins must be transcribed into ______________ that can leave the nucleus.

Accepted Answer

A)  amino acids 
B)  chromosomes 
C)  mRNA 
D)  tRNA 
A)  amino acids 
B)  chromosomes 
C)  mRNA 
D)  tRNA

Question 19

All of the following are functions of protein except to

Accepted Answer

A)  repair tissues. 
B)  support growth of new tissue. 
C)  supply more than 40 percent of the kilocalories in the diet. 
D)  synthesize hormones and enzymes. 
A)  repair tissues. 
B)  support growth of new tissue. 
C)  supply more than 40 percent of the kilocalories in the diet. 
D)  synthesize hormones and enzymes.

Question 20

A hereditary condition caused by an incorrect amino acid in the amino acid sequence of a protein chain is

Accepted Answer

A)  kwashiorkor. 
B)  sickle cell anemia. 
C)  marasmus. 
D)  edema. 
A)  kwashiorkor. 
B)  sickle cell anemia. 
C)  marasmus. 
D)  edema.

In the case of sickle cell anemia, the slight alterations in the DNA of red blood cells lead to

In proteins, amino acids are joined by _______________ bonds.

Treating a protein with acid, heat, or agitation will cause _______________, meaning that the three-dimensional structure of the protein has been altered.

The chemical element found in all amino acids but not found in either carbohydrates or fats is

All of the following describe kwashiorkor and marasmus except

The chemical bond joining adjacent amino acids is called a(n) _____________ bond.

The child with marasmus has all of the following conditions except

The typical American diet supplies approximately what percentage of protein as essential amino acids?

When there is a need for increased dietary protein during pregnancy or lactation, which foodstuff would be least desirable?

What is meant by the amino acid sequence of a protein?

Plant proteins do not match our needs for essential amino acids and therefore are called _______________ proteins.

Food proteins are used most efficiently when we

Which of the following is not true about the events during and after absorption of the products of protein digestion?

The most reliable source of vitamin B₁₂ for the vegan would be

Which of the following is true about protein intake in the United States?

Antibodies are

Which of the following is a food that provides all of the essential amino acids?

Because the DNA cannot leave the nucleus to get to the ribosomes, the genes for proteins must be transcribed into ______________ that can leave the nucleus.

All of the following are functions of protein except to

A hereditary condition caused by an incorrect amino acid in the amino acid sequence of a protein chain is

Nutrition, Food Choices, and Health

Guidelines for Designing a Healthy Diet

The Human Body: a Nutrition Perspective

Carbohydrates

Lipids

Energy Balance and Weight Control

Vitamins

Water and Minerals

Nutrition: Fitness and Sports

Eating Disorders

Undernutrition Throughout the World

Safety of Our Food Supply

Nutrition During Pregnancy and Breastfeeding

Nutrition From Infancy Through Adolescence

Nutrition During Adulthood

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Exam 6: Proteins

In the case of sickle cell anemia, the slight alterations in the DNA of red blood cells lead to

In proteins, amino acids are joined by _______________ bonds.

Treating a protein with acid, heat, or agitation will cause _______________, meaning that the three-dimensional structure of the protein has been altered.

The chemical element found in all amino acids but not found in either carbohydrates or fats is

All of the following describe kwashiorkor and marasmus except

The chemical bond joining adjacent amino acids is called a(n) _____________ bond.

The child with marasmus has all of the following conditions except

The typical American diet supplies approximately what percentage of protein as essential amino acids?

When there is a need for increased dietary protein during pregnancy or lactation, which foodstuff would be least desirable?

What is meant by the amino acid sequence of a protein?

Plant proteins do not match our needs for essential amino acids and therefore are called _______________ proteins.

Food proteins are used most efficiently when we

Which of the following is not true about the events during and after absorption of the products of protein digestion?

The most reliable source of vitamin B12 for the vegan would be

Which of the following is true about protein intake in the United States?

Antibodies are

Which of the following is a food that provides all of the essential amino acids?

Because the DNA cannot leave the nucleus to get to the ribosomes, the genes for proteins must be transcribed into ______________ that can leave the nucleus.

All of the following are functions of protein except to

A hereditary condition caused by an incorrect amino acid in the amino acid sequence of a protein chain is

Nutrition, Food Choices, and Health

Guidelines for Designing a Healthy Diet

The Human Body: a Nutrition Perspective

Carbohydrates

Lipids

Energy Balance and Weight Control

Vitamins

Water and Minerals

Nutrition: Fitness and Sports

Eating Disorders

Undernutrition Throughout the World

Safety of Our Food Supply

Nutrition During Pregnancy and Breastfeeding

Nutrition From Infancy Through Adolescence

Nutrition During Adulthood

Filters

The most reliable source of vitamin B₁₂ for the vegan would be