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Structure and Properties of Peptides

Structure and Properties of Peptides
When pO2 = Kd of myoglobin, the fractional saturation (YO2) is about

1.7
0.9
0.1
0.5

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Structure and Properties of Peptides
The oxygen in hemoglobin and myoglobin is bound to

lysine residues in the protein
the nitrogen atoms on the heme
the iron atom in the heme group
histidine residues in the protein

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Structure and Properties of Peptides
What is the proportion of glycine residues in collagenous regions?

One-third
One-tenth
One-fourth
Half

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Structure and Properties of Peptides
The oxygen binding curves of hemoglobin and myoglobin

are a consequence of the quaternary structure of hemoglobin
are identical
both (a) and (b)
allow maximum transfer of oxygen to the tissues

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Structure and Properties of Peptides
The molecular formula for glycine is C2H5O2N. What would be the molecular formula for a linear oligomer made by linking ten glycine molecules together by condensation synthesis?

C20H50O20N10
C20H40O10N10
C20H68O29N10
C20H32O11N10

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Structure and Properties of Peptides
The major element of secondary structure in myoglobin and hemoglobin is

the a-helix
the reverse turn
All of these
the P-strand

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