A living cell is characterized by the presence of several cellular structures and molecular processes. The correct statement regarding living cells is:

• A

  The nucleus is a characteristic feature of all living cells.
• Correct answer
  B

  An mRNA sequence is never completely represented in its translated product.
• C

  Anticodons are located on the rRNA.
• D

  Splicing of introns in prokaryotes occurs in the cytoplasm.

Hence, the correct answer is option: 'B'.