Question 1

How is the following amino acid categorized? The structure shows its form at pH = 7.

Accepted Answer

A) hydrophobic 
B) polar, acidic 
C) polar, basic 
D) polar, neutral 
E) None of the choices are correct. 
A) hydrophobic 
B) polar, acidic 
C) polar, basic 
D) polar, neutral 
E) None of the choices are correct.

Question 2

Which of the following is FALSE concerning the denaturing of proteins?

Accepted Answer

A) Heavy metals can denature proteins by forming bonds with negatively charged side chains. 
B) Denaturing can occur by changing the pH. 
C) Detergents, organic solvents, and heat break apart hydrogen bonding within proteins. 
D) Denaturing breaks the weaker hydrogen bonding, which creates the secondary and tertiary folds. 
E) Denaturing breaks apart the amino acids that make up the protein. 
A) Heavy metals can denature proteins by forming bonds with negatively charged side chains. 
B) Denaturing can occur by changing the pH. 
C) Detergents, organic solvents, and heat break apart hydrogen bonding within proteins. 
D) Denaturing breaks the weaker hydrogen bonding, which creates the secondary and tertiary folds. 
E) Denaturing breaks apart the amino acids that make up the protein.

Question 3

What changes occur in the structure of a protein molecule when it becomes denatured?

Accepted Answer

A) change in primary structure 
B) change in secondary structure 
C) change in tertiary structure 
D) All of the choices are correct. 
E) There is a change in both the secondary and tertiary structures. 
A) change in primary structure 
B) change in secondary structure 
C) change in tertiary structure 
D) All of the choices are correct. 
E) There is a change in both the secondary and tertiary structures.

Question 4

Similarities and differences in the primary structures of a protein isolated from two different organisms can provide an estimate of the evolutionary relationship between the two organisms.

Accepted Answer

A) True 
 B)False

Question 5

Amino acids or their component elements are NOT necessary for the biosynthesis of which of the following?

Accepted Answer

A) new cellular proteins 
B) the bases in DNA 
C) hemoglobin 
D) glycogen 
E) myoglobin 
A) new cellular proteins 
B) the bases in DNA 
C) hemoglobin 
D) glycogen 
E) myoglobin

Question 6

Proteins that are insoluble in water are called globular.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following statements concerning sickle cell anemia is FALSE?

Accepted Answer

A) Individuals with sickle cell anemia produce a mutant hemoglobin called sickle cell hemoglobin, so called due to the sickled appearance of the red blood cells that form in this condition. 
B) Sickle cell hemoglobin differs from normal hemoglobin by only one amino acid residue. 
C) Individuals who suffer from sickle cell anemia inherited two genes for sickle cell hemoglobin, one from each parent. 
D) Individuals with sickle cell trait have inherited only one copy of the gene for sickle cell hemoglobin and one for normal hemoglobin. 
E) The presence of sickle cell trait is related to an increase in resistance to diabetes. 
A) Individuals with sickle cell anemia produce a mutant hemoglobin called sickle cell hemoglobin, so called due to the sickled appearance of the red blood cells that form in this condition. 
B) Sickle cell hemoglobin differs from normal hemoglobin by only one amino acid residue. 
C) Individuals who suffer from sickle cell anemia inherited two genes for sickle cell hemoglobin, one from each parent. 
D) Individuals with sickle cell trait have inherited only one copy of the gene for sickle cell hemoglobin and one for normal hemoglobin. 
E) The presence of sickle cell trait is related to an increase in resistance to diabetes.

Question 8

Which of the following can denature a protein?

Accepted Answer

A) heat 
B) significant changes in pH 
C) detergents 
D) mechanical agitation 
E) All of the choices are correct. 
A) heat 
B) significant changes in pH 
C) detergents 
D) mechanical agitation 
E) All of the choices are correct.

Question 9

Which of the following is the most abundant protein in the human body?

Accepted Answer

A) immunoglobulins 
B) enzymes 
C) hemoglobin 
D) myoglobin 
E) collagen 
A) immunoglobulins 
B) enzymes 
C) hemoglobin 
D) myoglobin 
E) collagen

Question 10

What allows for the transfer of oxygen from the bloodstream of a mother to the bloodstream of fetus?

Accepted Answer

A) There is a partial pressure difference between the O2 of the mother and the O2 of the fetus. 
B) The blood vessels of the fetus are larger than that of the mother. 
C) The hemoglobin of the fetus is different than adults and has a greater affinity for oxygen then the hemoglobin of the mother. 
D) The hemoglobin of the fetus is larger than the hemoglobin of the mother. 
E) The fetus uses myoglobin to carry the oxygen in the blood, the mother uses hemoglobin. 
A) There is a partial pressure difference between the O2 of the mother and the O2 of the fetus. 
B) The blood vessels of the fetus are larger than that of the mother. 
C) The hemoglobin of the fetus is different than adults and has a greater affinity for oxygen then the hemoglobin of the mother. 
D) The hemoglobin of the fetus is larger than the hemoglobin of the mother. 
E) The fetus uses myoglobin to carry the oxygen in the blood, the mother uses hemoglobin.

Question 11

Hemoglobin and glycoproteins are two examples of proteins that contain a prosthetic group.What is a prosthetic group?

Accepted Answer

A) a nonprotein group bonded to a protein to create a functional unit 
B) an inhibitor of the function of the protein 
C) an enzyme that allows the protein to function more efficiently 
D) a side chain amino acid that is not one of the 20 standard amino acids 
E) an artificial amino acid that has been synthesized in the laboratory 
A) a nonprotein group bonded to a protein to create a functional unit 
B) an inhibitor of the function of the protein 
C) an enzyme that allows the protein to function more efficiently 
D) a side chain amino acid that is not one of the 20 standard amino acids 
E) an artificial amino acid that has been synthesized in the laboratory

Question 12

Which of the following is a structural protein?

Accepted Answer

A) albumin 
B) keratin 
C) insulin 
D) trypsin 
E) myoglobin 
A) albumin 
B) keratin 
C) insulin 
D) trypsin 
E) myoglobin

Question 13

The properties of amino acids and the proteins they compose are based on the nature of their side chain group.Which term best classifies the side chain of the amino acid phenylalanine?

Accepted Answer

A) basic 
B) acidic 
C) nonpolar, hydrophobic 
D) polar, neutral 
E) polar, hydrophilic 
A) basic 
B) acidic 
C) nonpolar, hydrophobic 
D) polar, neutral 
E) polar, hydrophilic

How is the following amino acid categorized? The structure shows its form at pH = 7.

Which of the following is FALSE concerning the denaturing of proteins?

What changes occur in the structure of a protein molecule when it becomes denatured?

Similarities and differences in the primary structures of a protein isolated from two different organisms can provide an estimate of the evolutionary relationship between the two organisms.

Amino acids or their component elements are NOT necessary for the biosynthesis of which of the following?

Proteins that are insoluble in water are called globular.

Which of the following statements concerning sickle cell anemia is FALSE?

Which of the following can denature a protein?

Which of the following is the most abundant protein in the human body?

What allows for the transfer of oxygen from the bloodstream of a mother to the bloodstream of fetus?

Hemoglobin and glycoproteins are two examples of proteins that contain a prosthetic group.What is a prosthetic group?

Which of the following is a structural protein?

The properties of amino acids and the proteins they compose are based on the nature of their side chain group.Which term best classifies the side chain of the amino acid phenylalanine?

Chemistry:methods and Measurement

The Structure of the Atom and the Periodic Table

Structure and Properties of Ionic and Covalent Compounds

Calculations, Chemical Changes, and the Chemical Equation

States of Matter- Gases, Liquids, and Solids

Solutions

Energy, Rate and Equilibrium

Acids and Bases

The Nucleus, Radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry- the Saturated Hydrocarbons

The Unsaturated Hydrocarbons- Alkenes, Alkynes, and Aromatics

Alcohols, Phenols, Thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

Filters

Exam 18: Protein Structure and Function

How is the following amino acid categorized? The structure shows its form at pH = 7.

Which of the following is FALSE concerning the denaturing of proteins?

What changes occur in the structure of a protein molecule when it becomes denatured?

Similarities and differences in the primary structures of a protein isolated from two different organisms can provide an estimate of the evolutionary relationship between the two organisms.

Amino acids or their component elements are NOT necessary for the biosynthesis of which of the following?

Proteins that are insoluble in water are called globular.

Which of the following statements concerning sickle cell anemia is FALSE?

Which of the following can denature a protein?

Which of the following is the most abundant protein in the human body?

What allows for the transfer of oxygen from the bloodstream of a mother to the bloodstream of fetus?

Hemoglobin and glycoproteins are two examples of proteins that contain a prosthetic group.What is a prosthetic group?

Which of the following is a structural protein?

The properties of amino acids and the proteins they compose are based on the nature of their side chain group.Which term best classifies the side chain of the amino acid phenylalanine?

Chemistry:methods and Measurement

The Structure of the Atom and the Periodic Table

Structure and Properties of Ionic and Covalent Compounds

Calculations, Chemical Changes, and the Chemical Equation

States of Matter- Gases, Liquids, and Solids

Solutions

Energy, Rate and Equilibrium

Acids and Bases

The Nucleus, Radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry- the Saturated Hydrocarbons

The Unsaturated Hydrocarbons- Alkenes, Alkynes, and Aromatics

Alcohols, Phenols, Thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

Filters