Question 1

The chemical interactions of large organic molecules are largely determined by:

Accepted Answer

A)  their solubility in water. 
B)  their functional groups. 
C)  their polar nature. 
D)  isomerization of these hydrocarbons into other forms. 
E)  the hydrogens bonded to the carbon atoms.

Question 2

Cyclic AMP is a type of nucleotide.
__________________

Accepted Answer

A) True 
 B)False

Question 3

The number of electron pairs shared between carbon 2 and 3 in the accompanying figure is:

Accepted Answer

A)  one. 
B)  one and a half. 
C)  two. 
D)  three. 
E)  four

Question 4

Identify the levels of organization for protein molecules, and list the type(s) of bond(s) involved in establishing each structural level.

Accepted Answer

The answer of Identify the levels of organization for protein...

Question 5

Glucose dissolves in water because:

Accepted Answer

A)  it ionizes. 
B)  it is a polysaccharide. 
C)  it has polar hydroxyl groups that interact with polar water molecules. 
D)  it has a very reactive primary structure. 
E)  it is hydrophobic.

Question 6

Figure 3-1
Use the figure below to answer the corresponding question(s). 
-The process illustrated in Figure 3-1 is called:

Accepted Answer

A)  condensation. 
B)  protein synthesis. 
C)  hydrolysis. 
D)  dehydration synthesis. 
E)  denaturation.

Question 7

Molecular chaperones are proteins that mediate the folding process of:

Accepted Answer

A)  other proteins. 
B)  amino acids. 
C)  lipids. 
D)  DNA. 
E)  sugars.

Question 8

MATCHING
Match the molecule with the appropriate word or phrase.
a.carbohydrate
c.nucleic acid
b.lipid
d.protein
-cholesterol

Accepted Answer

The answer of MATCHING
Match the molecule with the appropriate word...

Question 9

Monosaccharides are water soluble because:

Accepted Answer

A)  they contain a large number of methyl groups. 
B)  they have a large number of polar hydroxyl groups. 
C)  they have at least one double bond between adjacent carbons. 
D)  they have large numbers of nonpolar carbons in their backbones. 
E)  they can form ring structures.

Question 10

A pyrimidine is double-ring molecule.
__________________

Accepted Answer

A) True 
 B)False

Question 11

Which one of the following carbohydrates is the most structurally complex?

Accepted Answer

A)  sucrose 
B)  fructose 
C)  cellulose 
D)  glucose 
E)  a disaccharide

Question 12

Sickle cell anemia is a genetic disease caused by the replacement of one amino acid in the hemoglobin molecule.This replacement changes the shape and function of the hemoglobin protein in dramatic ways, which can sometimes be lethal.How can the substitution of one amino acid lead to such drastic results?

Accepted Answer

The answer of Sickle cell anemia is a genetic disease...

Question 13

MATCHING
Match the molecule with the appropriate word or phrase.
a.carbohydrate
c.nucleic acid
b.lipid
d.protein
-may contain thymine

Accepted Answer

The answer of MATCHING
Match the molecule with the appropriate word...

Question 14

Fats high in unsaturated fatty acids tend to be solid at room temperature.
__________________

Accepted Answer

A) True 
 B)False

Question 15

Which of the following illustrates hydrolysis?

Accepted Answer

A)  the reaction of two monosaccharides to form a disaccharide 
B)  the reaction of two amino acids to form a dipeptide 
C)  the reaction of a hydrogen atom and a hydroxide ion to form water 
D)  the reaction of a fat to form glycerol and fatty acids 
E)  the formation of ATP from ADP and inorganic phosphate

Question 16

DNA most directly determines which __________ are made by a cell.

Accepted Answer

A)  polysaccharides 
B)  polypeptides 
C)  nucleotides 
D)  triglycerides 
E)  fatty acids

Question 17

What does the term "functional group" mean in reference to the structure of organic molecules? Identify two types of functional groups and describe their chemical properties.

Accepted Answer

The answer of What does the term "functional group" mean...

Question 18

Proteins with alpha-helical forms exhibit this property:

Accepted Answer

A)  strength. 
B)  elasticity. 
C)  heat stability. 
D)  rigidity. 
E)  hydrophobicity.

Question 19

Which of the following statements concerning unsaturated fats is correct?

Accepted Answer

A)  They are more common in animals. 
B)  They have no double bonds in the carbon chains of their fatty acids. 
C)  They are generally liquid at room temperature. 
D)  They contain more hydrogen than do saturated fats having the same number of carbon atoms. 
E)  They have fewer fatty acids per fat molecule than do saturated fats.

Question 20

Which of the following molecules is not grouped with the lipids?

Accepted Answer

A)  prostaglandins. 
B)  steroids. 
C)  cholesterol. 
D)  carotenoids. 
E)  glycoproteins

Exam 3: The Chemistry of Life: Organic Compounds

The chemical interactions of large organic molecules are largely determined by:

Cyclic AMP is a type of nucleotide. __________________

The number of electron pairs shared between carbon 2 and 3 in the accompanying figure is:

Identify the levels of organization for protein molecules, and list the type(s) of bond(s) involved in establishing each structural level.

Glucose dissolves in water because:

Figure 3-1 Use the figure below to answer the corresponding question(s) . -The process illustrated in Figure 3-1 is called:

Molecular chaperones are proteins that mediate the folding process of:

MATCHING Match the molecule with the appropriate word or phrase. a.carbohydrate c.nucleic acid b.lipid d.protein -cholesterol

Monosaccharides are water soluble because:

A pyrimidine is double-ring molecule. __________________

Which one of the following carbohydrates is the most structurally complex?

MATCHING Match the molecule with the appropriate word or phrase. a.carbohydrate c.nucleic acid b.lipid d.protein -may contain thymine

Fats high in unsaturated fatty acids tend to be solid at room temperature. __________________

Which of the following illustrates hydrolysis?

DNA most directly determines which __________ are made by a cell.

What does the term "functional group" mean in reference to the structure of organic molecules? Identify two types of functional groups and describe their chemical properties.

Proteins with alpha-helical forms exhibit this property:

Which of the following statements concerning unsaturated fats is correct?

Which of the following molecules is not grouped with the lipids?