Question 1

The following questions are based on the 15 molecules illustrated in the figure below. Each molecule may be used once, more than once, or not at all.
 
-Which molecule is glycerol?

Accepted Answer

A)  1
B)  6
C)  10
D)  14
E)  15F) C) and E)
G) A) and E)

Question 2

Which of the following is an example of hydrolysis?

Accepted Answer

A)  the reaction of two monosaccharides, forming a disaccharide with the release of water
B)  the synthesis of two amino acids, forming a peptide with the release of water
C)  the reaction of a fat, forming glycerol and fatty acids with the release of water
D)  the reaction of a fat, forming glycerol and fatty acids with the consumption of water
E)  the synthesis of a nucleotide from a phosphate, a pentose sugar, and a nitrogenous base with the production of a molecule of waterF) B) and D)
G) None of the above

Question 3

Humans can digest starch but not cellulose because

Accepted Answer

A)  the monomer of starch is glucose, while the monomer of cellulose is galactose.
B)  humans have enzymes that can hydrolyze the β glycosidic linkages of starch but not the α glycosidic linkages of cellulose.
C)  humans have enzymes that can hydrolyze the α glycosidic linkages of starch but not the β glycosidic linkages of cellulose.
D)  humans harbor starch-digesting bacteria in the digestive tract.
E)  the monomer of starch is glucose, while the monomer of cellulose is glucose with a nitrogen-containing group.F) A) and B)
G) A) and C)

Question 4

Dehydration reactions are used in forming which of the following compounds?

Accepted Answer

A)  triacylglycerides
B)  polysaccharides
C)  proteins
D)  triacylglycerides and proteins only
E)  triacylglycerides, polysaccharides, and proteinsF) C) and E)
G) A) and D)

Question 5

Which of the following descriptions best fits the class of molecules known as nucleotides?

Accepted Answer

A)  a nitrogenous base and a phosphate group
B)  a nitrogenous base and a pentose sugar
C)  a nitrogenous base, a phosphate group, and a pentose sugar
D)  a phosphate group and an adenine or uracil
E)  a pentose sugar and a purine or pyrimidineF) B) and E)
G) A) and E)

Question 6

Which of the following statements is true for the class of biological molecules known as lipids?

Accepted Answer

A)  They are insoluble in water.
B)  They are made from glycerol, fatty acids, and phosphate.
C)  They contain less energy than proteins and carbohydrates.
D)  They are made by dehydration reactions.
E)  They contain nitrogen.F) A) and C)
G) A) and E)

Question 7

Which of the following are nitrogenous bases of the purine type?

Accepted Answer

A)  cytosine and guanine
B)  guanine and adenine
C)  adenine and thymine
D)  thymine and uracil
E)  uracil and cytosineF) All of the above
G) B) and C)

Question 8

If cells are grown in a medium containing radioactive ¹⁵N, which of these molecules will be labelled?

Accepted Answer

A)  fatty acids only
B)  nucleic acids only
C)  proteins only
D)  amylase only
E)  both proteins and nucleic acidsF) D) and E)
G) A) and C)

Question 9

The following questions are based on the 15 molecules illustrated in the figure below. Each molecule may be used once, more than once, or not at all.
 
-Which of the following molecules is a purine type of nitrogenous base?

Accepted Answer

A)  2
B)  3
C)  5
D)  12
E)  13F) A) and E)
G) A) and D)

Question 10

The following questions are based on the 15 molecules illustrated in the figure below. Each molecule may be used once, more than once, or not at all.
 
-Which molecule has both hydrophilic and hydrophobic properties and would be found in plasma membranes?

Accepted Answer

A)  1
B)  5
C)  6
D)  12
E)  14F) C) and D)
G) None of the above

Question 11

The following questions are based on the 15 molecules illustrated in the figure below. Each molecule may be used once, more than once, or not at all.
 
-Which of the following molecules consists of a hydrophilic "head" region and a hydrophobic "tail" region?

Accepted Answer

A)  2
B)  5
C)  7
D)  9
E)  11F) All of the above
G) A) and B)

Question 12

The use of computer software to analyze large genetic and protein data sets is known as

Accepted Answer

A)  genomics.
B)  proteomics.
C)  bioinformatics.
D)  sequencing.
E)  molecular genealogy.F) C) and D)
G) A) and E)

Question 13

Which class of biological molecules are grouped together because their monomers are amino acids?

Accepted Answer

A)  carbohydrates
B)  lipids
C)  proteins
D)  nucleic acids
E)  This is not a criterion for grouping molecules.F) A) and C)
G) All of the above

Question 14

The R group or side chain of the amino acid serine is -CH₂-OH. The R group or side chain of the amino acid leucine is -CH₂-CH-(CH₃₎₂. Where would you expect to find these amino acids in a globular protein in aqueous solution?

Accepted Answer

A)  Serine would be in the interior, and leucine would be on the exterior of the globular protein.
B)  Leucine would be in the interior, and serine would be on the exterior of the globular protein.
C)  Both serine and leucine would be in the interior of the globular protein.
D)  Both serine and leucine would be on the exterior of the globular protein.
E)  Both serine and leucine would be in the interior and on the exterior of the globular protein.F) A) and C)
G) C) and E)

Question 15

Which of the following are nitrogenous bases of the pyrimidine type?

Accepted Answer

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

Question 16

Which of the following statements best summarizes the differences between DNA and RNA?

Accepted Answer

A)  DNA encodes hereditary information, whereas RNA does not.
B)  The bases in DNA form base-paired duplexes, whereas the bases in RNA do not.
C)  DNA nucleotides contain a different sugar than RNA nucleotides.
D)  DNA contains the base uracil, whereas RNA contains the base thymine.
E)  DNA encodes hereditary information, whereas RNA does not; the bases in DNA form base-paired duplexes, whereas the bases in RNA do not; and DNA nucleotides contain a different sugar than RNA nucleotides.F) C) and E)
G) A) and D)

Question 17

Use the following information to answer the questions below.
You have just had a breakfast of toast (high-fibre bread)  with butter and jam (no added sugar)  along with a glass of milk.
-Which of the following categories includes all others in the list?

Accepted Answer

A)  monosaccharide
B)  disaccharide
C)  starch
D)  carbohydrate
E)  polysaccharideF) B) and D)
G) A) and E)

Question 18

All of the following are polysaccharides except

Accepted Answer

A)  lactose.
B)  glycogen.
C)  chitin.
D)  cellulose.
E)  amylopectin.F) B) and C)
G) None of the above

Question 19

-What is the structure shown in the figure above?

Accepted Answer

A)  pentose molecule
B)  fatty acid molecule
C)  steroid molecule
D)  oligosaccharide molecule
E)  phospholipid moleculeF) B) and E)
G) C) and E)

Question 20

How many molecules of water are needed to completely hydrolyze a polymer that is 11 monomers long?

Accepted Answer

A)  12
B)  11
C)  10
D)  9
E)  8F) A) and C)
G) A) and E)

Exam 5: The Structure and Function of Large Biological Molecules

All of the following are polysaccharides except

Correct AnswerverifiedShow Answer

How many molecules of water are needed to completely hydrolyze a polymer that is 11 monomers long?

Correct AnswerverifiedShow Answer

Which of the following are nitrogenous bases of the pyrimidine type?

Correct AnswerverifiedShow Answer

The following questions are based on the 15 molecules illustrated in the figure below. Each molecule may be used once, more than once, or not at all. -Which of the following molecules consists of a hydrophilic "head" region and a hydrophobic "tail" region?

Correct AnswerverifiedShow Answer

Which of the following statements is true for the class of biological molecules known as lipids?

Correct AnswerverifiedShow Answer

Which of the following are nitrogenous bases of the purine type?

Correct AnswerverifiedShow Answer

If cells are grown in a medium containing radioactive ¹⁵N, which of these molecules will be labelled?

Correct AnswerverifiedShow Answer

The R group or side chain of the amino acid serine is -CH₂-OH. The R group or side chain of the amino acid leucine is -CH₂-CH-(CH₃₎₂. Where would you expect to find these amino acids in a globular protein in aqueous solution?

Correct AnswerverifiedShow Answer

Which of the following descriptions best fits the class of molecules known as nucleotides?

Correct AnswerverifiedShow Answer

Which of the following is an example of hydrolysis?

Correct AnswerverifiedShow Answer

Which class of biological molecules are grouped together because their monomers are amino acids?

Correct AnswerverifiedShow Answer

Dehydration reactions are used in forming which of the following compounds?

Correct AnswerverifiedShow Answer

Humans can digest starch but not cellulose because

Correct AnswerverifiedShow Answer

The following questions are based on the 15 molecules illustrated in the figure below. Each molecule may be used once, more than once, or not at all. -Which molecule is glycerol?

Correct AnswerverifiedShow Answer

The use of computer software to analyze large genetic and protein data sets is known as

Correct AnswerverifiedShow Answer

Which of the following statements best summarizes the differences between DNA and RNA?

Correct AnswerverifiedShow Answer

-What is the structure shown in the figure above?

Correct AnswerverifiedShow Answer

Use the following information to answer the questions below. You have just had a breakfast of toast (high-fibre bread) with butter and jam (no added sugar) along with a glass of milk. -Which of the following categories includes all others in the list?

Correct AnswerverifiedShow Answer

The following questions are based on the 15 molecules illustrated in the figure below. Each molecule may be used once, more than once, or not at all. -Which molecule has both hydrophilic and hydrophobic properties and would be found in plasma membranes?

Correct AnswerverifiedShow Answer

The following questions are based on the 15 molecules illustrated in the figure below. Each molecule may be used once, more than once, or not at all. -Which of the following molecules is a purine type of nitrogenous base?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified