A) Palade
B) Porter
C) Brown
D) Watson
Correct Answer: A
Solution :
Ribosomes were discovered by Palade (1955) in bean root. These are submicroscopic particles, seen with the help of electrone microscope. They are composed of r-RNA and proteins, present in both eukaryotic and prokaryotic cells. In eukaryotic cells these of larger sized 80S (each unit is 60S and 40S) and in prokaryotic cells these of smaller sized 70S (each unit is 50S and 30S). These attached to endoplasmic reticulum in eukaryotic cells and takes part in protein synthesis. Endoplasmic reticulum were discovered by Porter.
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