Multiple Choice
What are the monomer units that make up proteins?
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4. Biomolecules
Proteins
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Which of the following interactions is not part of the tertiary structure of proteins?
A
Disulfide bridges
B
Hydrogen bonds
C
Peptide bonds
D
Ionic bonds
Verified step by step guidance1
Understand the levels of protein structure: Proteins have four levels of structure - primary, secondary, tertiary, and quaternary. The primary structure is the sequence of amino acids linked by peptide bonds.
Identify the types of interactions in tertiary structure: Tertiary structure is the three-dimensional folding of a protein, stabilized by various interactions such as hydrogen bonds, ionic bonds, hydrophobic interactions, and disulfide bridges.
Recognize peptide bonds: Peptide bonds are covalent bonds that link amino acids together in the primary structure of proteins. They are not involved in the folding and interactions that define the tertiary structure.
Differentiate between primary and tertiary structure: While peptide bonds are crucial for forming the primary structure, tertiary structure involves interactions between the side chains of amino acids, not the peptide bonds themselves.
Conclude which interaction is not part of tertiary structure: Since peptide bonds are part of the primary structure, they do not contribute to the tertiary structure, unlike disulfide bridges, hydrogen bonds, and ionic bonds.
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