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?

C20H32O11N10
C20H40O10N10
C20H50O20N10
C20H68O29N10

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Structure and Properties of Peptides
The Ramachandran Plot illustrates the fact that

the F & Y angles can assume only a single value in a protein
the F & Y angles can assume any value in a peptide
the peptide bond is planar
the F & Y angles can assume approximately three different values

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Structure and Properties of Peptides
Hemoglobin has quaternary structure and is made up of

six polypeptide chains, two α-chains and four β-chains
four polypeptide chains, two α-chains and two β-chains
five polypeptide chains, two α-chains and three β-chains
two polypeptide chains, one α-chains and one β-chains

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Structure and Properties of Peptides
In deoxy hemoglobin (Hb), the Fe (II) is coordinated to

two nitrogens of heme and to three His residues in Hb
two nitrogens of heme and to three water molecules
four nitrogens of heme, the proximal His, and a water molecule
four nitrogens of heme and to a water molecule

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