Question

question 17 (1 point)
the sequence of amino acids in a polypeptide chain or protein is indicated by the
_____
primary structure
secondary structure
tertiary structure
quaternary structure
quinary structure

Explanation:

• Primary structure: Refers to the linear sequence of amino acids in a polypeptide chain.
• Secondary structure: Involves local folding (e.g., alpha - helices, beta - sheets) due to hydrogen bonding.
• Tertiary structure: Is the overall 3D shape of a single polypeptide chain, resulting from interactions like hydrophobic interactions, disulfide bonds.
• Quaternary structure: Applies to proteins with multiple polypeptide subunits.
• Quinary structure is not a recognized level of protein structure. So, the sequence of amino acids is indicated by the primary structure.

Answer:

A. primary structure