Question 1

What type of interaction would you expect between the following R groups in the tertiary structure of a protein?

Accepted Answer

A) disulfide bonds 
B) salt bridges 
C) hydrogen bonds 
D) hydrophobic interactions 
E) peptide bonds 
A) disulfide bonds 
B) salt bridges 
C) hydrogen bonds 
D) hydrophobic interactions 
E) peptide bonds D

Question 2

What kinds of interactions are NOT part of tertiary protein structure?

Accepted Answer

A) peptide bonds 
B) salt bridges 
C) hydrophobic interactions 
D) hydrophilic interactions 
E) disulfide bonds 
A) peptide bonds 
B) salt bridges 
C) hydrophobic interactions 
D) hydrophilic interactions 
E) disulfide bonds A

Question 3

Hemoglobin is an example of a protein with

Accepted Answer

A)  two protein chains held together. 
B)  primarily a  
sheet structure. 
C)  primarily an   structure. 
D)  primary structure only. 
E)  a quaternary structure. 
A)  two protein chains held together. 
B)  primarily a  
sheet structure. 
C)  primarily an   structure. 
D)  primary structure only. 
E)  a quaternary structure. E

Question 4

Heavy metals denature proteins by

Accepted Answer

A) releasing amino acids. 
B) changing the pH of the protein solution. 
C) disrupting disulfide bonds. 
D) disrupting hydrophobic interactions. 
E) changing the temperature of the protein solution. 
A) releasing amino acids. 
B) changing the pH of the protein solution. 
C) disrupting disulfide bonds. 
D) disrupting hydrophobic interactions. 
E) changing the temperature of the protein solution.

Question 5

Acids and bases denature a protein by disrupting

Accepted Answer

A) hydrophobic interactions and peptide bonds. 
B) salt bridges and hydrogen bonds. 
C) amide bonds and alkene bonds. 
D) peptide bonds and ionic bonds. 
E) salt bridges and hydrophobic interactions. 
A) hydrophobic interactions and peptide bonds. 
B) salt bridges and hydrogen bonds. 
C) amide bonds and alkene bonds. 
D) peptide bonds and ionic bonds. 
E) salt bridges and hydrophobic interactions.

Question 6

What type of interaction would you expect between the following R groups in the tertiary structure of a protein?

Accepted Answer

A) disulfide bonds 
B) salt bridges 
C) hydrogen bonds 
D) hydrophobic interactions 
E) peptide bonds 
A) disulfide bonds 
B) salt bridges 
C) hydrogen bonds 
D) hydrophobic interactions 
E) peptide bonds

Question 7

Which of the following shows all of the tripeptides that can be formed from one molecule each of lysine (Lys), threonine (Thr), and histidine (His)?

Accepted Answer

A) Lys-Thr-His, Lys-His-Thr, His-Lys-Thr 
B) Lys-Thr-His, Lys-His-Thr 
C) Lys-Thr-His 
D) Lys-Thr-His, Lys-His-Thr, His-Thr-Lys, His-Lys-Thr, Thr-Lys-His, Thr-His-Lys 
E) Lys-Thr-His, Lys-His-Thr, His-Lys-Thr, Thr-His-Lys 
A) Lys-Thr-His, Lys-His-Thr, His-Lys-Thr 
B) Lys-Thr-His, Lys-His-Thr 
C) Lys-Thr-His 
D) Lys-Thr-His, Lys-His-Thr, His-Thr-Lys, His-Lys-Thr, Thr-Lys-His, Thr-His-Lys 
E) Lys-Thr-His, Lys-His-Thr, His-Lys-Thr, Thr-His-Lys

Question 8

A peptide bond contains which kind of functional group?

Accepted Answer

A) carboxylic acid 
B) alcohol 
C) amine 
D) amide 
E) ketone 
A) carboxylic acid 
B) alcohol 
C) amine 
D) amide 
E) ketone

Question 9

The peptide bonds that combine amino acids in the primary structure of a protein are

Accepted Answer

A) glycosidic bonds. 
B) ether bonds. 
C) ester bonds. 
D) sulfide bonds. 
E) amide bonds. 
A) glycosidic bonds. 
B) ether bonds. 
C) ester bonds. 
D) sulfide bonds. 
E) amide bonds.

Question 10

The interactions that are important in the secondary structure of a protein are

Accepted Answer

A) disulfide bonds. 
B) hydrogen bonds. 
C) salt bridges. 
D) peptide bonds. 
E) hydrophobic interactions. 
A) disulfide bonds. 
B) hydrogen bonds. 
C) salt bridges. 
D) peptide bonds. 
E) hydrophobic interactions.

Question 11

Which R group would most likely be found in a hydrophobic area of the tertiary structure of a protein?

Accepted Answer

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

Question 12

The secondary structure of collagen is distinguished by

Accepted Answer

A)  many   helixes wound into fibrils. 
B)  a bundled triple helix. 
C)  many glycoside links. 
D)  single    helix strands. 
E)  double    helix strands. 
A)  many   helixes wound into fibrils. 
B)  a bundled triple helix. 
C)  many glycoside links. 
D)  single    helix strands. 
E)  double    helix strands.

Question 13

Which of the following is characterized by three polypeptide chains.

Accepted Answer

A)    
B)  amyloids 
C)  collagen 
D)    
A)    
B)  amyloids 
C)  collagen 
D)

Question 14

Proteins that stimulate immune response are known as ________.

Accepted Answer

The answer of Proteins that stimulate immune response are known...

Question 15

What type of amino acids have polar R groups that can be attracted to water?

Accepted Answer

A) aromatic 
B) hydrocarbon 
C) nonpolar 
D) hydrophilic 
E) hydrophobic 
A) aromatic 
B) hydrocarbon 
C) nonpolar 
D) hydrophilic 
E) hydrophobic

Question 16

Consider the R groups of the following amino acids:
cysteine:  
alanine:  
serine:  
The name for the dipeptide shown below is

Accepted Answer

A) seryl-alanine 
B) serine-alanine 
C) alanyl-serine 
D) seryl-cysteine 
E) alanyl-cysteine 
A) seryl-alanine 
B) serine-alanine 
C) alanyl-serine 
D) seryl-cysteine 
E) alanyl-cysteine

Question 17

The R group for serine is   In the ionized form, serine has the structural formula

Accepted Answer

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

Question 18

Hemoglobin has a total of ________ protein chain(s)in its quaternary structure.

Accepted Answer

A) one 
B) two 
C) three 
D) four 
E) five 
A) one 
B) two 
C) three 
D) four 
E) five

Question 19

The side chain for histidine is classified as a(n)________ R group.

Accepted Answer

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

Question 20

Wool is primarily made up of

Accepted Answer

A) carbohydrate. 
B) enkephalin. 
C) triacylglycerols. 
D) globin. 
E) protein. 
A) carbohydrate. 
B) enkephalin. 
C) triacylglycerols. 
D) globin. 
E) protein.

Exam 19: Amino Acids and Proteins

What type of interaction would you expect between the following R groups in the tertiary structure of a protein?

What kinds of interactions are NOT part of tertiary protein structure?

Hemoglobin is an example of a protein with

Heavy metals denature proteins by

Acids and bases denature a protein by disrupting

What type of interaction would you expect between the following R groups in the tertiary structure of a protein?

Which of the following shows all of the tripeptides that can be formed from one molecule each of lysine (Lys), threonine (Thr), and histidine (His)?

A peptide bond contains which kind of functional group?

The peptide bonds that combine amino acids in the primary structure of a protein are

The interactions that are important in the secondary structure of a protein are

Which R group would most likely be found in a hydrophobic area of the tertiary structure of a protein?

The secondary structure of collagen is distinguished by

Which of the following is characterized by three polypeptide chains.

Proteins that stimulate immune response are known as ________.

What type of amino acids have polar R groups that can be attracted to water?

Consider the R groups of the following amino acids: cysteine: alanine: serine: The name for the dipeptide shown below is

The R group for serine is In the ionized form, serine has the structural formula

Hemoglobin has a total of ________ protein chain(s)in its quaternary structure.

The side chain for histidine is classified as a(n)________ R group.

Wool is primarily made up of

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