From the statements given below choose the correct option.
A. The eukaryotic ribosomes are 80 S and

Question

From the statements given below choose the correct option. 
A. The eukaryotic ribosomes are 80 S and prokaryotic ribosomes are 70S. 
B. Each ribosome has two sub-units. 
C. The two sub-units of 80 S ribosome are 60 S and 40 S while that of 70 S are 50 S and 30 S . 
D. The two sub-units of 80 S ribosome are 60 S and 20 S and that of 70 S are 50 S and 20 S . 
E. The two sub-units of 80 S are 60 S and 30 S and that of 70 S are 50 S and 30 S .

Professor PC Thomas Classes · Answer

(c) : The eukaryotic ribosomes are 80 S while the prokaryotic ribosomes are 70 S . Here ' S ' stands for the sedimentation coefficient; it indirectly is a measure of density and size. Both 70 S and 80 S ribosomes are composed of two subunits. The two subunits of 80 S ribosomes are 60 S and 40 S while that of 70 S ribosomes are 50 S and 30 S .