Question 1

Which polypeptide stimulates the production of adrenal hormones?

Accepted Answer

A)  ACTH 
B)  ADH 
C)  glucagon 
D)  prolactin 
A)  ACTH 
B)  ADH 
C)  glucagon 
D)  prolactin

Question 2

Which of the following is the structure for alanine?

Accepted Answer

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

Question 3

Which of the following proteins is an example of a glycoprotein?

Accepted Answer

A)  casein 
B)  fibrin 
C)  gamma globulin 
D)  myoglobin 
A)  casein 
B)  fibrin 
C)  gamma globulin 
D)  myoglobin

Question 4

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 5

Proteins can be classified based on _____ .

Accepted Answer

A)  function. 
B)  shape. 
C)  composition. 
D)  all of these 
A)  function. 
B)  shape. 
C)  composition. 
D)  all of these

Question 6

$\alpha$-Keratin,the protein of hair and skin,has extensive sections with the ____ secondary structure.

Accepted Answer

A)  beta-pleated sheet 
B)  alpha-helix 
C)  alpha-pleated sheet 
D)  beta-helix 
A)  beta-pleated sheet 
B)  alpha-helix 
C)  alpha-pleated sheet 
D)  beta-helix

Question 7

How many different tripeptides could be formed by 1 of each of the following amino acids?
[ lysine histidine aspartate ]

Accepted Answer

A)  1 
B)  3 
C)  6 
D)  9 
A)  1 
B)  3 
C)  6 
D)  9

Question 8

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 9

An alpha amino acid contains

Accepted Answer

A)  an amino group on the carbon next to the carboxylate group. 
B)  two amino groups. 
C)  two carboxyl groups. 
D)  an amino group on the end carbon. 
A)  an amino group on the carbon next to the carboxylate group. 
B)  two amino groups. 
C)  two carboxyl groups. 
D)  an amino group on the end carbon.

Question 10

The figure below shows a portion of what type of secondary protein structure?

Accepted Answer

A)  alpha helix 
B)  beta sheet 
C)  neither a or b 
D)  insufficient information 
A)  alpha helix 
B)  beta sheet 
C)  neither a or b 
D)  insufficient information

Question 11

A disulfide bridge within a protein molecule is different from the hydrogen bonding within the molecule because the disulfide bridge is a stronger bond than the hydrogen bond.

Accepted Answer

A) True 
 B)False

Question 12

The peptide linkage is an amide bond.

Accepted Answer

A) True 
 B)False

Question 13

By convention,the N-terminal end of a peptide is usually placed on the ____ of a structure.

Accepted Answer

A)  right 
B)  left 
C)  bottom 
D)  top 
A)  right 
B)  left 
C)  bottom 
D)  top

Question 14

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 15

The given protein segment is correctly labeled.

Accepted Answer

A) True 
 B)False

Question 16

If a protein is made up of primarily of long,rod-shaped or string-like structures,it would be considered a ____ protein.

Accepted Answer

A)  conjugated 
B)  globular 
C)  fibrous 
D)  enzymatic 
A)  conjugated 
B)  globular 
C)  fibrous 
D)  enzymatic

Question 17

Which of the following is the structure for tryptophan?

Accepted Answer

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

Question 18

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 19

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 20

The quaternary structure of hemoglobin contains two subunits.

Accepted Answer

A) True 
 B)False

Exam 19: Proteins

Which polypeptide stimulates the production of adrenal hormones?

Which of the following is the structure for alanine?

Which of the following proteins is an example of a glycoprotein?

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

Proteins can be classified based on _____ .

α\alphaα -Keratin,the protein of hair and skin,has extensive sections with the ____ secondary structure.

How many different tripeptides could be formed by 1 of each of the following amino acids? [ lysine histidine aspartate ]

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

An alpha amino acid contains

The figure below shows a portion of what type of secondary protein structure?

A disulfide bridge within a protein molecule is different from the hydrogen bonding within the molecule because the disulfide bridge is a stronger bond than the hydrogen bond.

The peptide linkage is an amide bond.

By convention,the N-terminal end of a peptide is usually placed on the ____ of a structure.

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.

The given protein segment is correctly labeled.

If a protein is made up of primarily of long,rod-shaped or string-like structures,it would be considered a ____ protein.

Which of the following is the structure for tryptophan?

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

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

The quaternary structure of hemoglobin contains two subunits.

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

$\alpha$ -Keratin,the protein of hair and skin,has extensive sections with the ____ secondary structure.