Question 1

A protein is

Accepted Answer

A)  a polysaccharide.
B)  a saturated ester of glycerol.
C)  one of the units making up a nucleic acid.
D)  a polymer of amino acids.
E)  an aromatic hydrocarbon.F) None of the above
G) A) and B)

Question 2

An essential amino acid is one that

Accepted Answer

A)  must be included in the diet.
B)  contains no sulfur.
C)  occurs in all types of proteins.
D)  is necessary for vitamin production.
E)  the body can synthesize.F) B) and D)
G) A) and E)

Question 3

A protein that has been reversibly denatured has

Accepted Answer

A)  temporarily lost part or all of its secondary or tertiary structure.
B)  temporarily lost part or all of its primary structure.
C)  been genetically modified due to errors in the nucleotides in the parent DNA.
D)  temporarily lost its amino acid residues.
E)  temporarily lost the hydrogen bonding between nitrogenous bases.F) A) and B)
G) A) and C)

Question 4

The intermolecular force between bases on the opposite strands of DNA responsible for its double-helical structure is

Accepted Answer

A)  hydrogen bonding.
B)  dispersion force.
C)  covalent bonding.
D)  ionic force.
E)  dipole-dipole force.F) C) and D)
G) A) and B)

Question 5

The primary structure of a protein refers to the unique amino acid sequence of the polypeptide chain.

Accepted Answer

A) True 
 B)False

Question 6

Polystyrene results from the polymerization of

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  EF) A) and B)
G) D) and E)

Question 7

The monomer used to prepare polyvinyl chloride (PVC)is CHCl=CHCl.

Accepted Answer

A) True 
 B)False

Question 8

The functional group  found in proteins is called a (an)

Accepted Answer

A)  amide.
B)  carboxylic acid.
C)  amine.
D)  amino acid.
E)  dipeptide.F) A) and B)
G) A) and C)

Question 9

Which nitrogen base is found in RNA but not in DNA?

Accepted Answer

A)  adenine
B)  cytosine
C)  guanine
D)  thymine
E)  uracilF) C) and D)
G) A) and B)

Question 10

Draw the structural formula of the monomer that would be used to prepare the following
polymer (Teflon):

Accepted Answer

The answer of Draw the structural formula of the monomer...

Question 11

A peptide bond (also called an amide bond) joins two amino acids together. What atoms are linked by this bond?

Accepted Answer

A)  C - O
B)  C - H
C)  C - N
D)  N - S
E)  S - CF) A) and B)
G) C) and E)

Question 12

Which choice lists both the sugar and the nitrogen base that are a part of RNA but are not a part of DNA?

Accepted Answer

A)  deoxyribose and thymine
B)  ribose and deoxyribose
C)  ribose and uracil
D)  uracil and thymine
E)  ribose and thymineF) A) and E)
G) A) and D)

Question 13

The segment  represents the polymer named

Accepted Answer

A)  polybutylene.
B)  polyvinyl chloride.
C)  polypropylene.
D)  polystyrene.
E)  polyethylene.F) None of the above
G) A) and E)

Question 14

Hydrogen bonding, dispersion forces, ionic forces, and dipole-dipole forces all affect the structure of a protein?

Accepted Answer

A) True 
 B)False

Question 15

Which one of these choices is the general structural formula of an amino acid?

Accepted Answer

A)   2-NH2 
C)     
D)    " class="answers-bank-image d-inline" rel="preload" >
B)  R-CH2-NH2
C)   2-NH2 
C)     
D)    " class="answers-bank-image d-inline" rel="preload" >
D)   2-NH2 
C)     
D)    " class="answers-bank-image d-inline" rel="preload" >E) A) and D)
F) All of the above

Question 16

Cysteine and methionine are unique among the twenty essential amino acids in that they

Accepted Answer

A)  are chiral.
B)  contain an aromatic ring.
C)  do not form dipolar ions.
D)  contain sulfur.
E)  cannot join with other amino acids to form peptides.F) A) and C)
G) A) and B)

Question 17

Which of these molecules is a product of the hydrolysis of DNA?

Accepted Answer

A)  acetic acid
B)  glucose
C)  adenine
D)  ribose
E)  waterF) B) and C)
G) All of the above

Question 18

Which one of these molecules could not serve as a monomer for an addition polymer?

Accepted Answer

A)  ClCH=CH2
B)  H2C=CH-CN
C)  H2C=CH-C6H5
D)   2 
B)  H2C=CH-CN 
C)  H2C=CH-C6H5 
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
E)   2 
B)  H2C=CH-CN 
C)  H2C=CH-C6H5 
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >F) B) and D)
G) C) and E)

Question 19

Acrylonitrile results from the polymerization of

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  EF) A) and B)
G) B) and C)

Question 20

The following amino acids all have nonpolar side chains.

Accepted Answer

A) True 
 B)False

Exam 22: Organic Polymerssynthetic and Natural

The intermolecular force between bases on the opposite strands of DNA responsible for its double-helical structure is

Correct AnswerverifiedShow Answer

Acrylonitrile results from the polymerization of

Correct AnswerverifiedShow Answer

The monomer used to prepare polyvinyl chloride (PVC)is CHCl=CHCl.

Correct AnswerverifiedShow Answer

Which one of these choices is the general structural formula of an amino acid?

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Which choice lists both the sugar and the nitrogen base that are a part of RNA but are not a part of DNA?

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A peptide bond (also called an amide bond) joins two amino acids together. What atoms are linked by this bond?

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A protein is

Correct AnswerverifiedShow Answer

The functional group found in proteins is called a (an)

Correct AnswerverifiedShow Answer

Polystyrene results from the polymerization of

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The segment represents the polymer named

Correct AnswerverifiedShow Answer

Which nitrogen base is found in RNA but not in DNA?

Correct AnswerverifiedShow Answer

Hydrogen bonding, dispersion forces, ionic forces, and dipole-dipole forces all affect the structure of a protein?

Correct AnswerverifiedShow Answer

An essential amino acid is one that

Correct AnswerverifiedShow Answer

A protein that has been reversibly denatured has

Correct AnswerverifiedShow Answer

Which one of these molecules could not serve as a monomer for an addition polymer?

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Draw the structural formula of the monomer that would be used to prepare the following polymer (Teflon):

Correct AnswerverifiedShow Answer

Cysteine and methionine are unique among the twenty essential amino acids in that they

Correct AnswerverifiedShow Answer

The following amino acids all have nonpolar side chains.

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Which of these molecules is a product of the hydrolysis of DNA?

Correct AnswerverifiedShow Answer

The primary structure of a protein refers to the unique amino acid sequence of the polypeptide chain.

Correct AnswerverifiedShow Answer

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