The linear arrangement of amino acid units in proteins is called:
Correct answer: C. Primary structure
- A. Secondary structure
- B. Tertiary structure
- C. Primary structure
- D. Quaternary structure
Explanation
The most common types of secondary structures are the α helix and the β pleated sheet.2. The tertiary structure of a protein refers to the overall three-dimensional arrangement of its polypeptide chain in space.3. Protein primary structure is the linear sequence of amino acids in a peptide or protein4. Quaternary structure in proteins is the most intricate degree of organization still considered a single molecule. To be considered to have a quaternary structure, a protein must have two or more peptide chains forming subunits.
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About Macromolecules
Proteins are classified by shape, composition and structure, from primary amino acid sequence to secondary, tertiary and quaternary organisation, and their biological roles are linked to this structure. Enzymes are examined as protein biocatalysts, including active sites, substrate specificity, activation energy, cofactors and factors affecting activity.
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