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Biochemistry Study Set 8

Chemistry

Quiz 6 :

Protein Function

Quiz 6 :

Protein Function

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Which of the following is NOT a characteristic of an enzyme active site?
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Multiple Choice
Answer:

Answer:

B

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Vitamin C is required for prolyl hydroxylase to function. Prolyl hydroxylase enzyme activity is necessary for the proper biosynthesis of collagen. Which of the following might result from a deficiency in vitamin C?
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Multiple Choice
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Answer:

A

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A proposed structure of a bacterial membrane protein shows that the distance between successive amino acids in a region crossing the membrane is 3.4 Å. Recall that a typical lipid bilayer is approximately 40 Å across. Which of the following is the most likely description of the protein?
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Multiple Choice
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Answer:

D

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Hemoglobin contains __________ -helices, __________ -sheets, and globin folds.
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Below is a figure of adult hemoglobin. The arrow points to where binds. img
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Consider the following interaction between a protein and its ligand: [P] + [L] [PL]. If [L] = 5 mM, [P] = 3 mM, and [PL] = 2 mM, what is the Ka for the interaction?
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Which of the following statements is true for hemoglobin but NOT myoglobin?
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In both myoglobin and hemoglobin, O2 reversibly binds to a(n) atom contained in a porphyrin ring that is tightly bound to the protein.
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Which of the following is true of this compound? img
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Below is a fractional saturation curve for O2 binding to adult hemoglobin. Assume that curve Y represents a system at pH 7.4 and with a normal physiological level of 2,3-BPG. Curve X represents a system that img
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An effector binds to a single subunit of a multi-subunit allosteric protein. As a result, all subunits switch to the R state. This is an example of the model of allostery.
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The estrogen receptor is a(n)
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Nuclear receptors are a type of
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Which of the following directly requires ATP to carry out its function?
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Which of the following is a genomic caretaker protein?
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A reduction in the catalytic ability of carbonic anhydrase may lead to efficient oxygen delivery by hemoglobin as a result of a(n) Bohr effect.
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If a metabolic enzyme __________ the energy of activation of a reaction, the rate of product formation will _.
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When oxygen binds to hemoglobin, which of the following occurs?
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Which of the following is NOT a transport protein?
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Which of the following is a positive effector for oxygen binding to hemoglobin?
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