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Structure and Properties of Peptides

Structure and Properties of Peptides
An oil drop with a polar coat is a metaphor referring to the three dimensional structure of

silk protein
fibrous proteins
globular proteins
collagen

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Structure and Properties of Peptides
Which of the following is an example of tertiary structure in a protein?

An a-helix
A globular domain
A multimeric protein
A P-pleated sheet

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Structure and Properties of Peptides
If the F and Y angles of each peptide unit in a protein are known, which of the following may also be determined?

Thermodynamic stability
Complete tertiary structure
Complete secondary structure
Complete quaternary structure

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

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

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Structure and Properties of Peptides
The heme is held in place by a bond between

the Fe3+ and histidine
the Fe2+ and cysteine
the Fe3+ and cysteine
the Fe2+ and histidine

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Structure and Properties of Peptides
Disulfide bonds most often stabilize the native structure of

hydrophobic proteins
intracellular proteins
dimeric proteins
extracellular proteins

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MORE MCQ ON Structure and Properties of Peptides

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