Protein Structures Have Several Different Levels of Organization

question 8

Multiple Choice

Protein structures have several different levels of organization.The primary structure of a protein is its amino acid sequence.The secondary and tertiary structures are more complicated.Consider the definitions below and select the one that best fits the term "protein domain."

• A)a small cluster of α helices and β sheets
• B)the tertiary structure of a substrate-binding pocket
• C)a complex of more than one polypeptide chain
• D)a protein segment that folds independently

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Definitions:

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