In tertiary structure the ________ bond is formed between two cysteine amino acids.
A) hydrophilic
B) hydrophobic
C) hydrogen
D) ionic
E) disulfide
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Question 2) ________ structure results primarily from hydrophobic and hydrophilic interactions between the R-groups of the polypeptide chain and water.
A) Primary
B) Secondary
C) Tertiary
D) Quaternary
E) Pentanary
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Question 3) Identify the correct statement regarding the process of denaturation.
A) It is affected by low temperatures.
B) It is unaffected by changes in pH.
C) It is the loss of protein structure.
D) It is an increase in enzyme activity.
E) It results in decreased substrate availability.
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Question 4) How would the lack of a cofactor for an enzyme affect that enzyme's function?
A) The enzyme's function would not be altered.
B) The enzyme would function more slowly.
C) The enzyme would function more quickly.
D) The enzyme would not be able to function.
E) The enzyme would cease to function after reaching a maximum rate.
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Question 5) The maximum rate of an enzyme reaction
A) occurs during dehydration.
B) occurs during hydrolysis.
C) occurs during synthesis.
D) is reversible.
E) occurs at the saturation limit.
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Question 6) Which of the following is the symbol for an amino group?
A) -COOH
B) -PO3
C) -NH2
D) -AMO
E) -OH
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Question 7) Glycoproteins and proteoglycans are combinations of amino acids and
A) carbohydrates.
B) fatty acids.
C) lipids.
D) nucleic acids.
E) inorganic compounds.
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Question 8) Interaction between individual polypeptide chains to form a protein complex is ________ structure.
A) primary
B) secondary
C) tertiary
D) quaternary
E) pentagonal
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Question 9) The alpha-helix and beta sheet are examples of ________ protein structure.
A) primary
B) secondary
C) tertiary
D) quaternary
E) pentanary
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Question 10) A side chain on an amino acid is sometimes called
A) fibrous or globular.
B) a polypeptide chain.
C) an R group.
D) an isozyme.
E) nucleic acid.
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