Usually a polypeptide chain bends and folds upon itself to form a globular shape. This is protein's:

Correct answer: B. Tertiary conformation

  • A. Primary conformation
  • B. Tertiary conformation
  • C. Secondary conformation
  • D. Quaternary conformation

Explanation

The tertiary conformation refers to the three-dimensional arrangement of a single polypeptide chain. The polypeptide chain bends, folds, and twists upon itself to form a specific globular shape stabilized by various types of interactions, such as hydrogen bonding, disulfide bridges, hydrophobic interactions, and ionic interactions. The tertiary structure is essential for the protein's overall stability and function.

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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.

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