Regular, local structure of protein

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Prepare for your College Biology Exam 1 with flashcards and multiple choice questions. Test your understanding with detailed explanations and hints to ensure success in your biology exam!

Multiple Choice

Regular, local structure of protein

Explanation:
Regular, local structure in proteins refers to repeating patterns formed by hydrogen bonds along the backbone over short stretches of the polypeptide. That is secondary structure, which includes alpha helices and beta sheets. These structures arise from local interactions between backbone atoms, not from side chains. In contrast, primary structure is just the linear amino acid sequence, tertiary structure is the overall 3D shape of a single polypeptide, and quaternary structure describes how multiple polypeptides assemble. So the concept described by the statement is secondary structure.

Regular, local structure in proteins refers to repeating patterns formed by hydrogen bonds along the backbone over short stretches of the polypeptide. That is secondary structure, which includes alpha helices and beta sheets. These structures arise from local interactions between backbone atoms, not from side chains. In contrast, primary structure is just the linear amino acid sequence, tertiary structure is the overall 3D shape of a single polypeptide, and quaternary structure describes how multiple polypeptides assemble. So the concept described by the statement is secondary structure.

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