Question 1

Which of the following describes the structure of an antibody?

Accepted Answer

A) Tripeptide 
B) Small nucleic acid 
C) Huge protein molecule 
D) Large peptide molecule 
A) Tripeptide 
B) Small nucleic acid 
C) Huge protein molecule 
D) Large peptide molecule

Question 2

What is the percent digestibility of most plant proteins?

Accepted Answer

A) 25-45 
B) 50-65 
C) 70-90 
D) 95-99 
A) 25-45 
B) 50-65 
C) 70-90 
D) 95-99

Question 3

What is the most likely reason for a person to have abnormally high blood ammonia levels?

Accepted Answer

A) Liver dysfunction 
B) Kidney dysfunction 
C) Protein intake twice the RDA 
D) Protein intake one-tenth the RDA 
A) Liver dysfunction 
B) Kidney dysfunction 
C) Protein intake twice the RDA 
D) Protein intake one-tenth the RDA

Question 4

What is the chief function of pepsin?

Accepted Answer

A) Emulsifies dietary proteins 
B) Activates hydrochloric acid 
C) Activates pancreatic proteases 
D) Cleaves proteins into smaller polypeptides 
A) Emulsifies dietary proteins 
B) Activates hydrochloric acid 
C) Activates pancreatic proteases 
D) Cleaves proteins into smaller polypeptides

Question 5

What is the usual fate of orally ingested enzyme supplements?

Accepted Answer

A) Digested by gastrointestinal proteases 
B) Rapidly degraded by salivary secretions 
C) Mostly absorbed in original form from stomach 
D) Completely absorbed in original form from jejunum 
A) Digested by gastrointestinal proteases 
B) Rapidly degraded by salivary secretions 
C) Mostly absorbed in original form from stomach 
D) Completely absorbed in original form from jejunum

Question 6

What type of reaction is required to bind two molecules of glycine together and release a molecule of water?

Accepted Answer

A) Hydrolysis 
B) Deamination 
C) Denaturation 
D) Condensation 
A) Hydrolysis 
B) Deamination 
C) Denaturation 
D) Condensation

Question 7

When amino acids are deaminated, the immediate products are ammonia and often a

Accepted Answer

A) uric acid. 
B) keto acid. 
C) folic acid. 
D) gluco acid. 
A) uric acid. 
B) keto acid. 
C) folic acid. 
D) gluco acid.

Question 8

Which of the following would be classified as a polypeptide?

Accepted Answer

A) 1 amino acid 
B) 3 amino acids bonded together 
C) 9 fatty acids bonded together 
D) 20 amino acids bonded together 
A) 1 amino acid 
B) 3 amino acids bonded together 
C) 9 fatty acids bonded together 
D) 20 amino acids bonded together

Question 9

What is the process by which heat or acidity disrupts the normal shape of a protein chain?

Accepted Answer

A) Digestion 
B) Condensation 
C) Denaturation 
D) Hydrogenation 
A) Digestion 
B) Condensation 
C) Denaturation 
D) Hydrogenation

Question 10

In comparison to the well-defined structure of starch, which of the following is the most important factor that allows for the synthesis of thousands of different proteins?

Accepted Answer

A) Number of cell ribosomes 
B) Number of different amino acids 
C) Availability of amino acids containing sulfur 
D) Availability of amino acids containing hydroxyl groups 
A) Number of cell ribosomes 
B) Number of different amino acids 
C) Availability of amino acids containing sulfur 
D) Availability of amino acids containing hydroxyl groups

Question 11

Which of the following describes the state of nitrogen balance for a normal, healthy 35-year-old person who weighs 60 kg and consumes a diet that provides 75 g of protein and adequate energy?

Accepted Answer

A) Equilibrium 
B) Positive balance 
C) Negative balance 
D) Endogenous balance 
A) Equilibrium 
B) Positive balance 
C) Negative balance 
D) Endogenous balance

Question 12

Which of the following is the primary factor that differentiates one amino acid from another?

Accepted Answer

A) The side group 
B) The central carbon atom 
C) The number of oxygen atoms 
D) The number of nitrogen atoms 
A) The side group 
B) The central carbon atom 
C) The number of oxygen atoms 
D) The number of nitrogen atoms

Question 13

All of the following are contained in an amino acid except

Accepted Answer

A) an acid group. 
B) an amino group. 
C) an aldehyde group. 
D) a central carbon atom. 
A) an acid group. 
B) an amino group. 
C) an aldehyde group. 
D) a central carbon atom.

Question 14

What is the structure of an enzyme?

Accepted Answer

A) Lipid 
B) Protein 
C) Nucleic acid 
D) Carbohydrate 
A) Lipid 
B) Protein 
C) Nucleic acid 
D) Carbohydrate

Question 15

In kwashiorkor, the loss of hair color is indirectly related to

Accepted Answer

A) inadequate intake of tyrosine. 
B) elevated levels of blood homocysteine. 
C) excessive exposure to the sun's UV rays. 
D) being nursed by a poorly-nourished mother. 
A) inadequate intake of tyrosine. 
B) elevated levels of blood homocysteine. 
C) excessive exposure to the sun's UV rays. 
D) being nursed by a poorly-nourished mother.

Question 16

In the metabolism of amino acids for energy, what is the fate of the amino group?

Accepted Answer

A) Excreted as urea 
B) Burned for energy 
C) Stored in the liver 
D) Converted to glucose 
A) Excreted as urea 
B) Burned for energy 
C) Stored in the liver 
D) Converted to glucose

Question 17

Which of the following describes the structure of pepsin?

Accepted Answer

A) Lipid 
B) Protein 
C) Nucleic acid 
D) Carbohydrate 
A) Lipid 
B) Protein 
C) Nucleic acid 
D) Carbohydrate

Question 18

Your father, who has a high blood ammonia concentration, most likely has a poorly functioning

Accepted Answer

A) liver. 
B) spleen. 
C) kidney. 
D) intestinal tract. 
A) liver. 
B) spleen. 
C) kidney. 
D) intestinal tract.

Question 19

What is the ratio of calcium to protein intake (mg to g) for most U.S.women?

Accepted Answer

A) 3:1 
B) 9:1 
C) 15:1 
D) 21:1 
A) 3:1 
B) 9:1 
C) 15:1 
D) 21:1

Question 20

What is an oligopeptide?

Accepted Answer

A) A sulfur-containing amino acid 
B) A string of about 4-9 amino acids 
C) A carbohydrate-containing protein 
D) A protein containing only essential amino acids 
A) A sulfur-containing amino acid 
B) A string of about 4-9 amino acids 
C) A carbohydrate-containing protein 
D) A protein containing only essential amino acids

Exam 6: Protein: Amino Acids

Which of the following describes the structure of an antibody?

What is the percent digestibility of most plant proteins?

What is the most likely reason for a person to have abnormally high blood ammonia levels?

What is the chief function of pepsin?

What is the usual fate of orally ingested enzyme supplements?

What type of reaction is required to bind two molecules of glycine together and release a molecule of water?

When amino acids are deaminated, the immediate products are ammonia and often a

Which of the following would be classified as a polypeptide?

What is the process by which heat or acidity disrupts the normal shape of a protein chain?

In comparison to the well-defined structure of starch, which of the following is the most important factor that allows for the synthesis of thousands of different proteins?

Which of the following describes the state of nitrogen balance for a normal, healthy 35-year-old person who weighs 60 kg and consumes a diet that provides 75 g of protein and adequate energy?

Which of the following is the primary factor that differentiates one amino acid from another?

All of the following are contained in an amino acid except

What is the structure of an enzyme?

In kwashiorkor, the loss of hair color is indirectly related to

In the metabolism of amino acids for energy, what is the fate of the amino group?

Which of the following describes the structure of pepsin?

Your father, who has a high blood ammonia concentration, most likely has a poorly functioning

What is the ratio of calcium to protein intake (mg to g) for most U.S.women?

What is an oligopeptide?

An Overview of Nutrition

Planning a Healthy Diet

Digestion, Absorption, and Transport

The Carbohydrates: Sugars, Starches and Fibers

The Lipids: Triglycerides, Phospholipids, and Sterols

Metabolism: Transformations and Interactions

Energy Balance and Body Composition

Weight Management: Overweight, Obesity, and Underweight

The Water-Soluble Vitamins: B Vitamins and Vitamin C

The Fat-Soluble Vitamins: A, D, E, and K

Water and the Major Minerals

The Trace Minerals

Life Cycle Nutrition: Pregnancy and Lactation

Life Cycle Nutrition: Infancy, Childhood, and Adolescence

Life Cycle Nutrition: Adulthood and the Later Years

Nutrition Care and Assessment

Nutrition Intervention

Medications, Diet-Drug Interactions, and Herbal Products

Enteral Nutrition Support

Parenteral Nutrition Support

Metabolic and Respiratory Stress

Upper Gastrointestinal Disorders

Lower Gastrointestinal Disorders

Liver Disease and Gallstones

Diabetes Mellitus

Cardiovascular Diseases

Kidney Diseases

Cancer and Hiv Infection

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