Question 1

Which of the following polymers is formed by a condensation process?

Accepted Answer

A)  PVC
B)  nylon
C)  Teflon
D)  Plexiglas
E)  neopreneF) B) and D)
G) D) and E)

Question 2

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) B) and C)
G) B) and E)

Question 3

The secondary structure of a protein is the

Accepted Answer

A)  configuration of those parts of the chain stabilized by a regular pattern of covalent bonds between C and O groups of the backbone of the chain.
B)  configuration of those parts of the chain stabilized by a regular pattern of hydrogen bonds between CO and NH groups of the backbone of the chain.
C)  specific order of amino acids in the chain.
D)  overall three-dimensional structure of the molecule.
E)  overall arrangement of several polypeptide chains into one functional unit.F) D) and E)
G) B) and C)

Question 4

Poly(vinyl chloride)results from the polymerization of

Accepted Answer

The answer of Poly(vinyl chloride)results from the polymerization of ...

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

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) A) and B)
G) C) and E)

Question 7

The backbone of a strand of nucleic acid consists of

Accepted Answer

A)  phosphate units only.
B)  phosphate and sugar units.
C)  polyester.
D)  phosphate, sugar, and nitrogen base units.
E)  sugar units only.F) All of the above
G) B) and E) B

Question 8

Phosphorus is an essential mineral element. It is an important atom in which one of the following?

Accepted Answer

A)  amino acids
B)  proteins
C)  polyethylene
D)  nylon
E)  DNAF) C) and D)
G) A) and D)

Question 9

Which of the structures below corresponds to the dipeptide cysteylananine? The parent amino acids are shown below.

Accepted Answer

The answer of Which of the structures below corresponds to...

Question 10

Which choice contains all three molecular units found in nucleotides?

Accepted Answer

A)  phosphate, sugar, amino acid
B)  amino acid, nitrogen-containing base, sugar
C)  carboxylic acid, sugar, protein
D)  phosphate, nitrogen-containing base, sugar
E)  sugar, amino acid, proteinF) A) and E)
G) B) and C)

Question 11

Acrylonitrile results from the polymerization of

Accepted Answer

The answer of Acrylonitrile results from the polymerization of ...

Question 12

The polymer formed from the monomer CH2=CH-CN is

Accepted Answer

A)   2=CH-CN is 
A)     
B)  (CH2=CHCN) n 
C)  (CH2=CH=CN) n 
D)    " class="answers-bank-image d-inline" rel="preload" >
B)  (CH2=CHCN) n
C)  (CH2=CH=CN) n
D)   2=CH-CN is 
A)     
B)  (CH2=CHCN) n 
C)  (CH2=CH=CN) n 
D)    " class="answers-bank-image d-inline" rel="preload" >E) B) and C)
F) All of the above

Question 13

Proteins occurring in the  β\betaβ -pleated sheet structure

Accepted Answer

A)  are relatively inelastic.
B)  never occur in nature.
C)  produce structurally weak materials.
D)  contain no peptide bonds.
E)  are not involved in hydrogen bonds. F) B) and E)
G) B) and C)

Question 14

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 E)
G) A) and D)

Question 15

Which one of these materials is a copolymer?

Accepted Answer

A)  Styrene-butadiene
B)  polyvinyl chloride
C)  polypropylene
D)  poly-cis-isoprene
E)  polyethyleneF) A) and C)
G) A) and B)

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 B)
G) B) and D) D

Question 17

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 B)
G) A) and C)

Question 18

The segment  represents the polymer named

Accepted Answer

A)  polybutylene.
B)  polyvinyl chloride.
C)  polypropylene.
D)  polystyrene.
E)  polyethylene.F) A) and B)
G) A) and E)

Question 19

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

Accepted Answer

A) True 
 B)False  True

Question 20

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) B) and C)
G) A) and E)

Exam 25: Synthetic and Natural Organic Polymers

Which of the following polymers is formed by a condensation process?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The secondary structure of a protein is the

Correct AnswerverifiedShow Answer

Poly(vinyl chloride)results from the polymerization of

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A protein is

Correct AnswerverifiedShow Answer

The backbone of a strand of nucleic acid consists of

Correct AnswerverifiedB

Phosphorus is an essential mineral element. It is an important atom in which one of the following?

Correct AnswerverifiedShow Answer

Which of the structures below corresponds to the dipeptide cysteylananine? The parent amino acids are shown below.

Correct AnswerverifiedShow Answer

Which choice contains all three molecular units found in nucleotides?

Correct AnswerverifiedShow Answer

Acrylonitrile results from the polymerization of

Correct AnswerverifiedShow Answer

The polymer formed from the monomer CH2=CH-CN is

Correct AnswerverifiedShow Answer

Proteins occurring in the β\betaβ -pleated sheet structure

Correct AnswerverifiedShow Answer

An essential amino acid is one that

Correct AnswerverifiedShow Answer

Which one of these materials is a copolymer?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedD

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

Correct AnswerverifiedShow Answer

The segment represents the polymer named

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedTrue

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The polymer formed from the monomer CH₂=CH-CN is

Correct Answer
verified

Proteins occurring in the $\beta$ -pleated sheet structure

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified