Madhya Pradesh Police Exam Model Paper 4

The correct answer is Ribosomes.

• Ribosomes are non-membrane bound organelles found in all cells (both eukaryotic as well as prokaryotic).
• It was discovered by Palade in 1953.
• Proteins are formed in the Ribosomes.
  • A copy of the DNA is made (mRNA) and transported to a ribosome whenever a protein is produced.
  • Ribosomes read the information in the mRNA and use that information to assemble amino acids into a protein.
  • Several ribosomes may attach to a single mRNA and form a chain called polyribosomes or polysome
• Ribosomes are the smallest organelle in the cell.
• Ribosomes are attached to the endoplasmic reticulum.
• The eukaryotic ribosomes are also known as the 80S.
• The prokaryotic ribosomes are also known as the 70S.
• Here ‘S’ (Svedberg’s Unit) stands for the sedimentation coefficient.