Question 1

The following amino acid would be classified as neutral, nonpolar.

Accepted Answer

A) True 
 B)False

Question 2

A pleated sheet structure is an example of ____ protein structure.

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary 
A) primary 
B) secondary 
C) tertiary 
D) quaternary

Question 3

The reaction of amino acids to form peptides involves which pair of functional groups?

Accepted Answer

A) two amino groups 
B) two carboxyl groups 
C) an amino and a carboxyl group 
D) a carboxyl and an alcohol group 
A) two amino groups 
B) two carboxyl groups 
C) an amino and a carboxyl group 
D) a carboxyl and an alcohol group

Question 4

The major difference between normal hemoglobin and that of sickle cell anemia is

Accepted Answer

A) sickle cell hemoglobin is the L isomer and the normal is the D isomer. 
B) sickle cell hemoglobin is a much smaller molecule than normal hemoglobin. 
C) sickle cell hemoglobin is assembled in a reverse manner. 
D) sickle cell hemoglobin has one different amino acid in each β -chain. 
A) sickle cell hemoglobin is the L isomer and the normal is the D isomer. 
B) sickle cell hemoglobin is a much smaller molecule than normal hemoglobin. 
C) sickle cell hemoglobin is assembled in a reverse manner. 
D) sickle cell hemoglobin has one different amino acid in each β -chain.

Question 5

The peptide linkage is an amide bond.

Accepted Answer

A) True 
 B)False

Question 6

Protein denaturation results in a disruption of the

Accepted Answer

A) primary structure. 
B) secondary and tertiary structure. 
C) primary and secondary structure. 
D) primary, secondary and tertiary structure. 
A) primary structure. 
B) secondary and tertiary structure. 
C) primary and secondary structure. 
D) primary, secondary and tertiary structure.

Question 7

Peptide bonds usually are not cleaved in denaturation.

Accepted Answer

A) True 
 B)False

Question 8

Cross links between peptide chains resulting from interactions of the side chains contribute to which type of protein structural feature?

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) more than one response is correct 
A) primary 
B) secondary 
C) tertiary 
D) more than one response is correct

Question 9

A side chain (R group)containing CH2 − OH would be classified as _____ .

Accepted Answer

A) acidic 
B) basic 
C) neutral and nonpolar 
D) neutral and polar 
A) acidic 
B) basic 
C) neutral and nonpolar 
D) neutral and polar

Question 10

A major characteristic of the alpha amino acids is that they all possess polar side chains; the beta amino acids do not possess side chains.

Accepted Answer

A) True 
 B)False

Question 11

What type of interaction forms when two side chains containing an amino group and a carboxyl group are in close proximity?

Accepted Answer

A) disulfide bridge 
B) salt bridge 
C) hydrogen bond 
D) hydrophobic interactions 
A) disulfide bridge 
B) salt bridge 
C) hydrogen bond 
D) hydrophobic interactions

Question 12

A large protein undergoes a hydrolysis reaction. The product(s)of such a reaction include _____ .

Accepted Answer

A) amino acids 
B) glycerol 
C) water 
D) Large proteins do not undergo hydrolysis reactions 
A) amino acids 
B) glycerol 
C) water 
D) Large proteins do not undergo hydrolysis reactions

Question 13

Which of the following is a function of proteins?

Accepted Answer

A) catalytic 
B) protective 
C) storage 
D) all of these 
A) catalytic 
B) protective 
C) storage 
D) all of these

Question 14

Which of the following is the best representation of an lysine  in an aqueous solution at pH = 12?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 15

Which protein is an important component of hair and feathers?

Accepted Answer

A) myosin 
B) amylase 
C) α -keratin 
D) fibrinogen 
A) myosin 
B) amylase 
C) α -keratin 
D) fibrinogen

Question 16

Of the many sulfur-containing amino acids, cysteine is the only one that can not form disulfide bridges.

Accepted Answer

A) True 
 B)False

Question 17

The given protein segment is correctly labeled.

Accepted Answer

A) True 
 B)False

Question 18

A protein important in blood clotting is keratin.

Accepted Answer

A) True 
 B)False

Question 19

Peptides are named from the N-terminal to the C-terminal. The N-terminal is the nitrogen end of the molecule, and the C-terminal is the carboxylic carbon end of the peptide.

Accepted Answer

A) True 
 B)False

Question 20

​ Which type of amino acids contains an additional amino group?

Accepted Answer

A) Amino acids with neutral, nonpolar side chains 
B) Amino acids with neutral, polar side chains 
C) Amino acids with basic, polar side chains 
D) Amino acids with acidic, polar side chains 
A) Amino acids with neutral, nonpolar side chains 
B) Amino acids with neutral, polar side chains 
C) Amino acids with basic, polar side chains 
D) Amino acids with acidic, polar side chains

Exam 19: Proteins

The following amino acid would be classified as neutral, nonpolar.

A pleated sheet structure is an example of ____ protein structure.

The reaction of amino acids to form peptides involves which pair of functional groups?

The major difference between normal hemoglobin and that of sickle cell anemia is

The peptide linkage is an amide bond.

Protein denaturation results in a disruption of the

Peptide bonds usually are not cleaved in denaturation.

Cross links between peptide chains resulting from interactions of the side chains contribute to which type of protein structural feature?

A side chain (R group)containing CH2 − OH would be classified as _____ .

A major characteristic of the alpha amino acids is that they all possess polar side chains; the beta amino acids do not possess side chains.

What type of interaction forms when two side chains containing an amino group and a carboxyl group are in close proximity?

A large protein undergoes a hydrolysis reaction. The product(s)of such a reaction include _____ .

Which of the following is a function of proteins?

Which of the following is the best representation of an lysine in an aqueous solution at pH = 12?

Which protein is an important component of hair and feathers?

Of the many sulfur-containing amino acids, cysteine is the only one that can not form disulfide bridges.

The given protein segment is correctly labeled.

A protein important in blood clotting is keratin.

Peptides are named from the N-terminal to the C-terminal. The N-terminal is the nitrogen end of the molecule, and the C-terminal is the carboxylic carbon end of the peptide.

​ Which type of amino acids contains an additional amino group?

Matter, Measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Acids, Bases, and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

A side chain (R group)containing CH₂ − OH would be classified as _____ .

Which type of amino acids contains an additional amino group?