[Campbell Biology P.404] Which of the following statements best describes the primary functi... | Practice Question

Which of the following statements best describes the primary function of polyribosomes polysomes ?

  • A: To allow a single ribosome to translate multiple different mRNA molecules simultaneously.
  • B: To enable rapid production of many copies of the same polypeptide from a single mRNA molecule.
  • C: To facilitate the simultaneous transcription of multiple genes by a single RNA polymerase.
  • D: To ensure that all polypeptides are immediately imported into organelles after synthesis.

Explanation

Polyribosomes, or polysomes, are strings of ribosomes simultaneously translating a single mRNA molecule. This arrangement allows a cell to rapidly produce multiple copies of the same polypeptide from a single mRNA template, increasing the efficiency of protein synthesis.