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Structure and Properties of Peptides

Structure and Properties of Peptides
Heme is the binding pocket of myoglobin and hemoglobin and is composed of

negatively charged residues
positively charged residues
hydrophobic residues
polar residues

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

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

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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?

C20H68O29N10
C20H50O20N10
C20H32O11N10
C20H40O10N10

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Structure and Properties of Peptides
Which hemoglobin chain replaces the beta chain in embryonic hemoglobulin?

Epsilon
Delta
Gamma
Alfa

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Structure and Properties of Peptides
The different orders of protein structure are determined by all of the following bond types except

disulfide bridges
hydrogen bonds
phospho-diester bonds
peptide bonds

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Structure and Properties of Peptides
In the β-pleated sheet

adjacent polypeptide chains can either be parallel or antiparallel
the polypeptide chain is fully extended
All of these
hydrogen bonds are formed between the peptide bonds

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