Primary structure of proteins determines__________?
Correct answer: C. Amino acid sequence
- A. Number of polypeptide chains involved
- B. Bending of polypeptide chains
- C. Amino acid sequence
- D. Coiling of polypeptide chains
Explanation
The primary structure of a protein is the exact linear sequence of its amino acids, joined by peptide bonds. Coiling and bending describe higher levels of structure, so students may incorrectly choose coiling of polypeptide chains.
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About Proteins
Proteins are polymers of amino acids joined by peptide bonds, and their function depends on primary, secondary, tertiary and quaternary structure. The topic covers fibrous and globular proteins, enzymes, antibodies, hormones and transport proteins, as well as denaturation by heat or extreme pH.
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