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What class of protein is represented by the following? What class of protein is represented by the following?   A)  fibrous B)  globular C)  membrane D)  either fibrous or membrane


A) fibrous
B) globular
C) membrane
D) either fibrous or membrane

E) All of the above
F) A) and B)

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If an amino acid contained the following side chain would be classified as hydrophobic. If an amino acid contained the following side chain would be classified as hydrophobic.

A) True
B) False

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What type of interaction would occur between the side chains of two molecules of the amino acid shown below? What type of interaction would occur between the side chains of two molecules of the amino acid shown below?   A)  ion pair B)  disulfide bridge C)  hydrophobic interaction D)  hydrophilic interaction


A) ion pair
B) disulfide bridge
C) hydrophobic interaction
D) hydrophilic interaction

E) A) and D)
F) A) and C)

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The following amino acid would be found in the interior of a protein. The following amino acid would be found in the interior of a protein.

A) True
B) False

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Consider the tertiary structure of a protein containing two peptides with the segments shown below. Consider the tertiary structure of a protein containing two peptides with the segments shown below.   What types of interactions would be possible? A)  hydrogen bonding B)  hydrophobic interactions C)  ion-ion attractions D)  all of the above What types of interactions would be possible?


A) hydrogen bonding
B) hydrophobic interactions
C) ion-ion attractions
D) all of the above

E) None of the above
F) All of the above

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The ultimate fate of the nitrogen from the metabolism of amino acids in mammals is:


A) excretion as NH4+.
B) incorporation into intermediates in the citric acid cycle.
C) removal as urea in the kidneys.
D) used to fuel ATP producing reactions.

E) A) and B)
F) A) and C)

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This image could represent the reaction in which lactase catalyzes the hydrolysis of lactose (a disaccharide) into glucose and galactose (two monosaccharides). Fill in the blanks with the appropriate letter (A, B, C, D,....) from the image. -___________________ represents lactase.

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Consider the structure shown below. Consider the structure shown below.   Fill in the blanks with an integer (1, 2, 3, 4, 5....) as shown in the diagram or to represent a specified number. -The backbone contains ______________________ amino acids. Fill in the blanks with an integer (1, 2, 3, 4, 5....) as shown in the diagram or to represent a specified number. -The backbone contains ______________________ amino acids.

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Enzymes are sensitive to agitation and will be denatured by violent stirring.

A) True
B) False

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What is the three-letter representation for the peptide given below? What is the three-letter representation for the peptide given below?   A)  Ala-Ser-Ala-Gly-Gly B)  Gly-Gly-Ala-Ser-Ala C)  Gly-Ala-Ser D)  Gly-Ala-Ser-Ala


A) Ala-Ser-Ala-Gly-Gly
B) Gly-Gly-Ala-Ser-Ala
C) Gly-Ala-Ser
D) Gly-Ala-Ser-Ala

E) A) and D)
F) B) and D)

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This image could represent the reaction in which lactase catalyzes the hydrolysis of lactose (a disaccharide) into glucose and galactose (two monosaccharides). Fill in the blanks with the appropriate letter (A, B, C, D,....) from the image. -Galactose could be represented by __________________.

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Consider the structure shown below. Consider the structure shown below.   Fill in the blanks with an integer (1, 2, 3, 4, 5....) as shown in the diagram or to represent a specified number. -The N-terminal group is represented by the number___________________, Fill in the blanks with an integer (1, 2, 3, 4, 5....) as shown in the diagram or to represent a specified number. -The N-terminal group is represented by the number___________________,

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Draw the zwitterion ion form of phenylalanine.

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Glycogen phosphorylase breaks down glycogen in the liver to produce glucose-1-phosphate. The activity of this enzyme increases in the presence of AMP. AMP is therefore a negative effector in controlling this pathway.

A) True
B) False

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Consider the structure shown below. Consider the structure shown below.   Fill in the blanks with an integer (1, 2, 3, 4, 5....) as shown in the diagram or to represent a specified number. -The atom represented by the number _______________________ would carry a δ- charge. Fill in the blanks with an integer (1, 2, 3, 4, 5....) as shown in the diagram or to represent a specified number. -The atom represented by the number _______________________ would carry a δ- charge.

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An amino acid can be correctly characterized as: An amino acid can be correctly characterized as:

A) True
B) False

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Which of the following is the form that human body uses to excrete nitrogen?


A) nitrate ion
B) urea
C) ammonium ion
D) molecular nitrogen

E) B) and D)
F) C) and D)

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Consider the structure shown below. Consider the structure shown below.   Fill in the blanks with an integer (1, 2, 3, 4, 5....) as shown in the diagram or to represent a specified number. -A hydrophilic side chain is indicated by the number__________________. Fill in the blanks with an integer (1, 2, 3, 4, 5....) as shown in the diagram or to represent a specified number. -A hydrophilic side chain is indicated by the number__________________.

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How many chiral carbon atoms are present in the amino acid shown below? How many chiral carbon atoms are present in the amino acid shown below?   A)  1 B)  2 C)  3 D)  4


A) 1
B) 2
C) 3
D) 4

E) C) and D)
F) A) and D)

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Consider the following image. Consider the following image.   The   ?   in the image represents A)  negative effector. B)  competition inhibitor. C)  positive effector. D)  denaturing agent. The " ? " in the image represents


A) negative effector.
B) competition inhibitor.
C) positive effector.
D) denaturing agent.

E) C) and D)
F) B) and D)

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