Multiple Choice
Which type of bond is formed during the creation of the primary structure of a protein?
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4. Protein Structure
Primary Structure of Protein
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Which structural level refers to the order in which various amino acids are bonded in a protein?
A
Quaternary structure
B
Primary structure
C
Secondary structure
D
Tertiary structure
Verified step by step guidance1
Understand the structural levels of proteins: Proteins have four structural levels—primary, secondary, tertiary, and quaternary. Each level describes a different aspect of the protein's organization.
Define the primary structure: The primary structure refers to the linear sequence of amino acids in a polypeptide chain, connected by peptide bonds. This sequence is determined by the genetic code.
Differentiate the other structural levels: Secondary structure involves local folding patterns like α-helices and β-sheets, stabilized by hydrogen bonds. Tertiary structure refers to the overall 3D shape of a single polypeptide chain, influenced by interactions like hydrophobic effects, ionic bonds, and disulfide bridges. Quaternary structure describes the arrangement of multiple polypeptide chains in a protein complex.
Identify the structural level in the question: The order in which amino acids are bonded in a protein corresponds to the primary structure, as it specifically describes the sequence of amino acids.
Conclude that the correct answer is 'Primary structure' based on the definition and comparison of structural levels.
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