Question 1

Fill in the missing entries:‪

Accepted Answer

The answer of Fill in the missing entries:‪  ...

Question 2

Explain primary, secondary, and tertiary structures of proteins.

Accepted Answer

Twenty different amino acids are used to

Question 3

What intermolecular force keeps cellulose from moving past each other?

Accepted Answer

A)  dispersion forces 
B)  hydrogen bonding 
C)  dipole interactions 
D)  ionic interactions 
E)  multiple cross-linking 
A)  dispersion forces 
B)  hydrogen bonding 
C)  dipole interactions 
D)  ionic interactions 
E)  multiple cross-linking

Question 4

Cross-linking polymers results in

Accepted Answer

A)  lower viscosity. 
B)  lower tensile strength. 
C)  greater density. 
D)  greater rigidity. 
E)  greater flexibility. 
A)  lower viscosity. 
B)  lower tensile strength. 
C)  greater density. 
D)  greater rigidity. 
E)  greater flexibility.

Question 5

Olestra is a new oil substitute in the market where a hexose has fatty acids attached to the sugar via glycosidic bonds. What is the maximum number of glycosidic bonds possible in a hexose?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  5 
E)  6 
A)  2 
B)  3 
C)  4 
D)  5 
E)  6

Question 6

What is typically used as an initiation step for radical polymerization?

Accepted Answer

A)  two alkenes reacting together 
B)  a peroxide bond being cleaved 
C)  two radicals reacting together 
D)  a radical reacting with an alkene 
E)  reaction of a radical with cleaved peroxide 
A)  two alkenes reacting together 
B)  a peroxide bond being cleaved 
C)  two radicals reacting together 
D)  a radical reacting with an alkene 
E)  reaction of a radical with cleaved peroxide

Question 7

What two functional groups are used to combine monosaccharides into polymers?

Accepted Answer

A)  two alcohol groups 
B)  one alcohol and one carboxylic acid group 
C)  one alcohol and one amine group 
D)  one amine and one carboxylic acid group 
E)  two amine groups 
A)  two alcohol groups 
B)  one alcohol and one carboxylic acid group 
C)  one alcohol and one amine group 
D)  one amine and one carboxylic acid group 
E)  two amine groups

Question 8

Which of the following will result in termination of polymer growth?

Accepted Answer

A)  reaction of the radical chain with another alkene 
B)  reaction of the radical chain with a carbonyl 
C)  reaction of the radical chain with another radical chain 
D)  reaction of an two alkenes 
E)  absorption of light 
A)  reaction of the radical chain with another alkene 
B)  reaction of the radical chain with a carbonyl 
C)  reaction of the radical chain with another radical chain 
D)  reaction of an two alkenes 
E)  absorption of light

Question 9

A polymer is being made and marketed by Cargill. This polymer is made from lactic acid, a by-product of ethanol production from corn. Draw the product of three lactic acids combined via condensation reactions.

Accepted Answer

The answer of A polymer is being made and marketed...

Question 10

What functional groups are present in the ball and stick model shown below?  
I. amine
II. Alcohol
III. carboxylic acid
IV. Ketone
V. thiol

Accepted Answer

A)  I and IV 
B)  I and II 
C)  I and V 
D)  I and III 
E)  III only 
A)  I and IV 
B)  I and II 
C)  I and V 
D)  I and III 
E)  III only

Question 11

What is a typically termination step for radical polymerization?

Accepted Answer

A)  two alkenes reacting together 
B)  a peroxide bond being cleaved 
C)  two radicals reacting together 
D)  a radical reacting with an alkene 
E)  reaction of an alcohol with an carboxylic acid 
A)  two alkenes reacting together 
B)  a peroxide bond being cleaved 
C)  two radicals reacting together 
D)  a radical reacting with an alkene 
E)  reaction of an alcohol with an carboxylic acid

Question 12

What type of polymer would be best suited for an automobile bumper?

Accepted Answer

A)  thermoplastic 
B)  thermoset 
C)  elastomer 
D)  fibre 
E)  lightly cross-linked 
A)  thermoplastic 
B)  thermoset 
C)  elastomer 
D)  fibre 
E)  lightly cross-linked

Question 13

Increasing the degree of cross-linking in a polymer

Accepted Answer

A)  increases flexibility and increases strength. 
B)  decreases flexibility and decreases strength. 
C)  increases flexibility and decreases strength. 
D)  decreases flexibility and increases strength. 
A)  increases flexibility and increases strength. 
B)  decreases flexibility and decreases strength. 
C)  increases flexibility and decreases strength. 
D)  decreases flexibility and increases strength.

Question 14

Draw the product of the condensation reaction of 1-propanol with itself. CH3CH2CH2OH.

Accepted Answer

Question 15

Use the following amino acids for questions 
  
-Which of the above is the line structure for methionine?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  V 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  V

Question 16

Draw the structures of two molecules that would form the molecule shown below in a condensation reaction.

Accepted Answer

The answer of Draw the structures of two molecules that...

Question 17

How many products containing two amino acids can be formed from the following three amino acids?

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  6 
E)  7 
A)  3 
B)  4 
C)  5 
D)  6 
E)  7

Question 18

Which of the amino acids are hydrophobic?

Accepted Answer

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

Question 19

The polymer Lexan, shown below, is a condensation polymer formed with the elimination of an HCl molecule. Identify the monomers.

Accepted Answer

Mononers a

Question 20

What is the line structure for the compound containing an amide-linking group?

Accepted Answer

The answer of What is the line structure for the...

Exam 18: Macromolecules

Fill in the missing entries:‪

Explain primary, secondary, and tertiary structures of proteins.

What intermolecular force keeps cellulose from moving past each other?

Cross-linking polymers results in

Olestra is a new oil substitute in the market where a hexose has fatty acids attached to the sugar via glycosidic bonds. What is the maximum number of glycosidic bonds possible in a hexose?

What is typically used as an initiation step for radical polymerization?

What two functional groups are used to combine monosaccharides into polymers?

Which of the following will result in termination of polymer growth?

A polymer is being made and marketed by Cargill. This polymer is made from lactic acid, a by-product of ethanol production from corn. Draw the product of three lactic acids combined via condensation reactions.

What functional groups are present in the ball and stick model shown below? I. amine II. Alcohol III. carboxylic acid IV. Ketone V. thiol

What is a typically termination step for radical polymerization?

What type of polymer would be best suited for an automobile bumper?

Increasing the degree of cross-linking in a polymer

Draw the product of the condensation reaction of 1-propanol with itself. CH3CH2CH2OH.

Use the following amino acids for questions -Which of the above is the line structure for methionine?

Draw the structures of two molecules that would form the molecule shown below in a condensation reaction.

How many products containing two amino acids can be formed from the following three amino acids?

Which of the amino acids are hydrophobic?

The polymer Lexan, shown below, is a condensation polymer formed with the elimination of an HCl molecule. Identify the monomers.

What is the line structure for the compound containing an amide-linking group?

Fundamental Concepts of Chemistry

The Behaviour of Gases

Energy and Its Conservation

Atoms and Light

Atomic Energies and Periodicity

Fundamentals of Chemical Bonding

Theories of Chemical Bonding

Effects of Intermolecular Forces

Properties of Solutions

Organic Chemistrystructure

Organic Chemistryreactions

Spontaneity of Chemical Processes

Kinetics: Mechanisms and Rates of Reactions

Principles of Chemical Equilibrium

Aqueous Acidbase Equilibria

Applications of Aqueous Equilibria

Electron Transfer Reactions

The Transition Metals

The Main Group Elements

Nuclear Chemistry and Radiochemistry

Filters

Draw the product of the condensation reaction of 1-propanol with itself. CH₃CH₂CH₂OH.