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.
 
-A fat (or triacylglycerol) would be formed as a result of a dehydration reaction between

Accepted Answer

A)  one molecule of 9 and three molecules of 10.
B)  three molecules of 9 and one molecule of 10.
C)  one molecule of 5 and three molecules of 9.
D)  three molecules of 5 and one molecule of 9.
E)  one molecule of 5 and three molecules of 10.F) B) and E)
G) All of the above

Question 2

-The structure depicted in the above figure shows the

Accepted Answer

A)  1-4 linkage of the α glucose monomers of starch.
B)  1-4 linkage of the β glucose monomers of cellulose.
C)  double-helical structure of a DNA molecule.
D)  α helix secondary structure of a polypeptide.
E)  β pleated sheet secondary structure of a polypeptide.F) B) and C)
G) C) and D)

Question 3

The basis for diversity, both within a species and among species, is a result of the

Accepted Answer

A)  arrangement of a few base molecules into many different macromolecular combinations.
B)  shared structures of polymers and lipids.
C)  infinite number of base molecules to build from.
D)  ratio of lipid to protein.
E)  fact that some individuals have mutations.F) A) and C)
G) C) and E)

Question 4

The genome of humans and chimpanzees are ________ identical.

Accepted Answer

A)  less than 50%
B)  70-75%
C)  85-90%
D)  95-98%
E)  100%F) A) and B)
G) A) and E)

Question 5

The bonding of two amino acid molecules to form a larger molecule requires

Accepted Answer

A)  the release of a water molecule.
B)  the release of a carbon dioxide molecule.
C)  the addition of a nitrogen atom.
D)  the addition of a water molecule.
E)  the release of a nitrous oxide molecule.F) B) and E)
G) D) and E)

Question 6

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 statements is false?

Accepted Answer

A)  Molecules 1 and 4 could be joined together by a glycosidic linkage to form a disaccharide.
B)  Molecules 9 and 10 could be joined together by ester bonds to form a triacylglycerol.
C)  Molecules 2 and 7 could be joined together to form a short peptide.
D)  Molecules 2, 7, and 8 could be joined together to form a short peptide.
E)  Molecules 14 and 15 could be joined together to form a polypeptide.F) A) and B)
G) A) and C)

Question 7

At which level of protein structure are interactions between the side chains (R groups) most important?

Accepted Answer

A)  primary
B)  secondary
C)  tertiary
D)  quaternary
E)  all of the aboveF) A) and D)
G) A) and C)

Question 8

There are 20 different amino acids. What makes one amino acid different from another?

Accepted Answer

A)  different side chains (R groups) attached to a carboxyl carbon
B)  different side chains (R groups) attached to the amino groups
C)  different side chains (R groups) attached to an α carbon
D)  different structural and optical isomers
E)  different asymmetric carbonsF) B) and E)
G) A) and D)

Question 9

Which bonds are created during the formation of the primary structure of a protein?

Accepted Answer

A)  peptide bonds
B)  hydrogen bonds
C)  disulphide bonds
D)  phosphodiester bonds
E)  peptide bonds, hydrogen bonds, and disulphide bondsF) B) and D)
G) C) and E)

Question 10

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.
-The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are in the α form. Which of the following could amylase break down?

Accepted Answer

A)  glycogen, starch, and amylopectin
B)  glycogen and cellulose
C)  cellulose and chitin
D)  starch and chitin
E)  starch, amylopectin, and celluloseF) B) and D)
G) A) and B)

Question 11

If a DNA sample were composed of 10% thymine, what would be the percentage of guanine?

Accepted Answer

A)  10
B)  20
C)  40
D)  80
E)  impossible to tell from the information givenF) B) and D)
G) A) and E)

Question 12

Use the following figure to answer the questions below.
 
-The molecule shown in the figure above is a(n)

Accepted Answer

A)  polysaccharide.
B)  polypeptide.
C)  saturated fatty acid.
D)  triacylglycerol.
E)  unsaturated fatty acid.F) D) and E)
G) A) and B)

Question 13

Misfolding of polypeptides is a serious problem in cells. Which of the following diseases are associated with an accumulation of misfolded polypeptides?

Accepted Answer

A)  Alzheimer's only
B)  Parkinson's only
C)  diabetes mellitus only
D)  Alzheimer's and Parkinson's only
E)  Alzheimer's, Parkinson's, and diabetes mellitusF) C) and D)
G) A) and B)

Question 14

Which class of biological molecules are grouped together because its monomers contain both a nitrogenous base and a five-carbon sugar?

Accepted Answer

A)  carbohydrates
B)  lipids
C)  proteins
D)  nucleic acids
E)  This is not a criterion for grouping molecules.F) A) and D)
G) None of the above

Question 15

Upon chemical analysis, a particular polypeptide was found to contain 100 amino acids. How many peptide bonds are present in this protein?

Accepted Answer

A)  101
B)  100
C)  99
D)  98
E)  97F) A) and C)
G) B) and E)

Question 16

Humans and mice differ because

Accepted Answer

A)  their cells have different small organic molecules.
B)  their cells make different types of large biological molecules.
C)  their cells make different types of lipids.
D)  their cells have some differences in the sequence of nucleotides in their nucleic acids.
E)  their cells make different types of proteins.F) None of the above
G) B) 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.
-Enzymes that break down DNA catalyze the hydrolysis of the covalent bonds that join nucleotides together. What would happen to DNA molecules treated with these enzymes?

Accepted Answer

A)  The two strands of the double helix would separate.
B)  The phosphodiester linkages of the polynucleotide backbone would be broken.
C)  The purines would be separated from the deoxyribose sugars.
D)  The pyrimidines would be separated from the deoxyribose sugars.
E)  All bases would be separated from the deoxyribose sugars.F) D) and E)
G) A) and D)

Question 18

Use the following figure to answer the questions below.
 
-Which of the following statements is true regarding the molecule illustrated in the above figure?

Accepted Answer

A)  It is a saturated fatty acid.
B)  A diet rich in this molecule may contribute to atherosclerosis.
C)  Molecules of this type are usually liquid at room temperature.
D)  It is a saturated fatty acid and a diet rich in this molecule may contribute to atherosclerosis.
E)  It is a saturated fatty acid, a diet rich in this molecule may contribute to atherosclerosis, and molecules of this type are usually liquid at room temperature.F) B) and C)
G) B) and E)

Question 19

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.
-The molecular formula for glucose is C₆H₁₂O₆. What would be the molecular formula for a polymer made by linking ten glucose molecules together by dehydration reactions?

Accepted Answer

A)  C₆₀H₁₂₀O₆₀
B)  C₆H₁₂O₆
C)  C₆₀H₁₀₂O₅₁
D)  C₆₀H₁₀₀O₅₀
E)  C₆₀H₁₁₁O₅₁F) C) and E)
G) All of the above

Question 20

Which of the following is not a polymer?

Accepted Answer

A)  glucose
B)  starch
C)  cellulose
D)  chitin
E)  DNAF) A) and B)
G) A) and C)

Exam 5: The Structure and Function of Large Biological Molecules

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 statements is false?

Correct Answer
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At which level of protein structure are interactions between the side chains (R groups) most important?

Correct Answer
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Which of the following is not a polymer?

Correct Answer
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-The structure depicted in the above figure shows the

Correct Answer
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The bonding of two amino acid molecules to form a larger molecule requires

Correct Answer
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Upon chemical analysis, a particular polypeptide was found to contain 100 amino acids. How many peptide bonds are present in this protein?

Correct Answer
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The basis for diversity, both within a species and among species, is a result of the

Correct Answer
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Use the following figure to answer the questions below. -Which of the following statements is true regarding the molecule illustrated in the above figure?

Correct Answer
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Which bonds are created during the formation of the primary structure of a protein?

Correct Answer
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Which class of biological molecules are grouped together because its monomers contain both a nitrogenous base and a five-carbon sugar?

Correct Answer
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Correct Answer
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Use the following figure to answer the questions below. -The molecule shown in the figure above is a(n)

Correct Answer
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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. -A fat (or triacylglycerol) would be formed as a result of a dehydration reaction between

Correct Answer
verified

If a DNA sample were composed of 10% thymine, what would be the percentage of guanine?

Correct Answer
verified

There are 20 different amino acids. What makes one amino acid different from another?

Correct Answer
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The genome of humans and chimpanzees are ________ identical.

Correct Answer
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Correct Answer
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Misfolding of polypeptides is a serious problem in cells. Which of the following diseases are associated with an accumulation of misfolded polypeptides?

Correct Answer
verified

Humans and mice differ because

Correct Answer
verified

Exam 5: The Structure and Function of Large Biological Molecules

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 statements is false?

Correct AnswerverifiedShow Answer

At which level of protein structure are interactions between the side chains (R groups) most important?

Correct AnswerverifiedShow Answer

Which of the following is not a polymer?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

-The structure depicted in the above figure shows the

Correct AnswerverifiedShow Answer

The bonding of two amino acid molecules to form a larger molecule requires

Correct AnswerverifiedShow Answer

Upon chemical analysis, a particular polypeptide was found to contain 100 amino acids. How many peptide bonds are present in this protein?

Correct AnswerverifiedShow Answer

The basis for diversity, both within a species and among species, is a result of the

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -Which of the following statements is true regarding the molecule illustrated in the above figure?

Correct AnswerverifiedShow Answer

Which bonds are created during the formation of the primary structure of a protein?

Correct AnswerverifiedShow Answer

Which class of biological molecules are grouped together because its monomers contain both a nitrogenous base and a five-carbon sugar?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -The molecule shown in the figure above is a(n)

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. -A fat (or triacylglycerol) would be formed as a result of a dehydration reaction between

Correct AnswerverifiedShow Answer

If a DNA sample were composed of 10% thymine, what would be the percentage of guanine?

Correct AnswerverifiedShow Answer

There are 20 different amino acids. What makes one amino acid different from another?

Correct AnswerverifiedShow Answer

The genome of humans and chimpanzees are ________ identical.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Misfolding of polypeptides is a serious problem in cells. Which of the following diseases are associated with an accumulation of misfolded polypeptides?

Correct AnswerverifiedShow Answer

Humans and mice differ because

Correct AnswerverifiedShow Answer

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