Question

What are Palade particles?

Answer 1

Palade Particles:

1. George Palade observed dense particles under the electron microscope in 1953 and called them ‘Palade particles’.
2. These particles are granular structures, non-membranous, and composed of ribonucleic acid and proteins.
3. These particles are now called ribosomes that play an important role in protein synthesis in both eukaryotes and prokaryotes.
4. They are either found in the cytoplasm or attached to the endoplasmic reticulum.
5. In eukaryotes, the ribosomes are the 80S and in prokaryotes, the ribosomes are 70S where ‘S’ represents their sedimentation coefficient in Svedberg units.