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Which of the following is a true statement about body proteins?
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2. Cell Chemistry & Cell Components
Proteins
Scelta multipla
Which of the following statements is incorrect regarding protein structure?
A
Secondary structure is stabilized by hydrogen bonds between the backbone atoms.
B
Quaternary structure is the sequence of amino acids in a protein.
C
Primary structure refers to the sequence of amino acids in a protein.
D
Tertiary structure is the overall three-dimensional shape of a single polypeptide chain.
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Understand the four levels of protein structure: primary, secondary, tertiary, and quaternary.
Primary structure is the sequence of amino acids in a protein, linked by peptide bonds.
Secondary structure refers to local folded structures that form within a polypeptide due to hydrogen bonding between backbone atoms, such as alpha helices and beta sheets.
Tertiary structure is the overall three-dimensional shape of a single polypeptide chain, stabilized by various interactions including hydrogen bonds, ionic bonds, and hydrophobic interactions.
Quaternary structure involves the assembly of multiple polypeptide chains into a functional protein complex. The incorrect statement is that quaternary structure is the sequence of amino acids, which actually describes primary structure.
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