Question 1

Which of the following amino acids can coordinate to a metal ion?

Accepted Answer

A)  arginine 
B)  glutamic acid 
C)  isoleucine 
D)  phenylalanine 
A)  arginine 
B)  glutamic acid 
C)  isoleucine 
D)  phenylalanine

Question 2

Which of the following defines the primary structure of proteins?

Accepted Answer

A)  the geometric arrangement of the backbone atoms 
B)  the geometric arrangement of the side chains 
C)  the sequence of the amino acids 
D)  all of the above 
A)  the geometric arrangement of the backbone atoms 
B)  the geometric arrangement of the side chains 
C)  the sequence of the amino acids 
D)  all of the above

Question 3

Which of the following is a β-hydroxy-α-amino acid?

Accepted Answer

A)  asparagine 
B)  serine 
C)  tryptophan 
D)  none of these 
A)  asparagine 
B)  serine 
C)  tryptophan 
D)  none of these

Question 4

Which of the following is serylalanine?

Accepted Answer

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

Question 5

Which of the following amino acids functions as a hormone?

Accepted Answer

A)  leucine 
B)  lysine 
C)  thyroxine 
D)  tyrosine 
A)  leucine 
B)  lysine 
C)  thyroxine 
D)  tyrosine

Question 6

Which of the following amino acids will exist as a -2 ion at very low pH?

Accepted Answer

A)  asparagine 
B)  glutamic acid 
C)  isoleucine 
D)  none of these 
A)  asparagine 
B)  glutamic acid 
C)  isoleucine 
D)  none of these

Question 7

Which amino acids are precursors of norepinephrine and epinephrine?

Accepted Answer

A)  aspartic acid and glutamic acid 
B)  cysteine and methionine 
C)  isoleucine and leucine 
D)  phenylalanine and tyrosine 
A)  aspartic acid and glutamic acid 
B)  cysteine and methionine 
C)  isoleucine and leucine 
D)  phenylalanine and tyrosine

Question 8

Using the 20 standard amino acids how many tripeptides containing three different amino acids can be made?

Accepted Answer

A)  60 
B)  400 
C)  6840 
D)  8000 
A)  60 
B)  400 
C)  6840 
D)  8000

Question 9

Which of the following denaturing agents affects hydrophobic regions?

Accepted Answer

A)  detergents 
B)  heat 
C)  heavy metals 
D)  urea 
A)  detergents 
B)  heat 
C)  heavy metals 
D)  urea

Question 10

Which of the following is an allosteric protein?

Accepted Answer

A)  hemoglobin 
B)  myoglobin 
C)  both a and b 
D)  neither a nor b 
A)  hemoglobin 
B)  myoglobin 
C)  both a and b 
D)  neither a nor b

Question 11

Which of the following denaturing agents affects disulfide bonds?

Accepted Answer

A)  detergents 
B)  heat 
C)  heavy metals 
D)  urea 
A)  detergents 
B)  heat 
C)  heavy metals 
D)  urea

Question 12

In which of the following proteins is the β-pleated sheet the predominant structure?

Accepted Answer

A)  keratin 
B)  silk 
C)  both a and b 
D)  neither a nor b 
A)  keratin 
B)  silk 
C)  both a and b 
D)  neither a nor b

Question 13

Which of the following type of interaction is involved in the treatment of heavy metal poisoning?

Accepted Answer

A)  hydrogen bonding 
B)  covalent bonding 
C)  hydrophobic interactions 
D)  salt bridges 
E)  metal ion coordination 
A)  hydrogen bonding 
B)  covalent bonding 
C)  hydrophobic interactions 
D)  salt bridges 
E)  metal ion coordination

Question 14

Which of the following is a protein associated with the movement of muscles?

Accepted Answer

A)  actin 
B)  ferritin 
C)  hemoglobin 
D)  insulin 
A)  actin 
B)  ferritin 
C)  hemoglobin 
D)  insulin

Question 15

Which type of interaction is not associated with tertiary structure?

Accepted Answer

A)  covalent bonding 
B)  hydrogen bonding 
C)  hydrophobic interactions 
D)  None, they are all associated with tertiary structure. 
A)  covalent bonding 
B)  hydrogen bonding 
C)  hydrophobic interactions 
D)  None, they are all associated with tertiary structure.

Question 16

Which of the following is glycylalanine?

Accepted Answer

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

Question 17

What is the name for proteins which assist other proteins in attaining their correct secondary and tertiary structures?

Accepted Answer

A)  AGE's 
B)  chaperones 
C)  prions 
D)  proteinaids 
A)  AGE's 
B)  chaperones 
C)  prions 
D)  proteinaids

Question 18

Which of the following is a protein associated the storage of iron?

Accepted Answer

A)  actin 
B)  ferritin 
C)  hemoglobin 
D)  insulin 
A)  actin 
B)  ferritin 
C)  hemoglobin 
D)  insulin

Question 19

How many residues are present in vasopressin or oxytocin?

Accepted Answer

A)  5 
B)  7 
C)  9 
D)  11 
A)  5 
B)  7 
C)  9 
D)  11

Question 20

Which of the following amino acids will exist as a + 2 ion at very low pH?

Accepted Answer

A)  arginine 
B)  glutamic acid 
C)  isoleucine 
D)  none of these 
A)  arginine 
B)  glutamic acid 
C)  isoleucine 
D)  none of these

Exam 22: Proteins

Which of the following amino acids can coordinate to a metal ion?

Which of the following defines the primary structure of proteins?

Which of the following is a β-hydroxy-α-amino acid?

Which of the following is serylalanine?

Which of the following amino acids functions as a hormone?

Which of the following amino acids will exist as a -2 ion at very low pH?

Which amino acids are precursors of norepinephrine and epinephrine?

Using the 20 standard amino acids how many tripeptides containing three different amino acids can be made?

Which of the following denaturing agents affects hydrophobic regions?

Which of the following is an allosteric protein?

Which of the following denaturing agents affects disulfide bonds?

In which of the following proteins is the β-pleated sheet the predominant structure?

Which of the following type of interaction is involved in the treatment of heavy metal poisoning?

Which of the following is a protein associated with the movement of muscles?

Which type of interaction is not associated with tertiary structure?

Which of the following is glycylalanine?

What is the name for proteins which assist other proteins in attaining their correct secondary and tertiary structures?

Which of the following is a protein associated the storage of iron?

How many residues are present in vasopressin or oxytocin?

Which of the following amino acids will exist as a + 2 ion at very low pH?

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