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111.  Select the correct option stating true (T) and false (F) wr.t. ribosomes

(A) Protein synthesis in eukaryotic cell occurs in the ribosomes of nucleus.
(B) Ribosomes are the granular structures first observed under the electron microscope.
(C) The sedimentation coefficient is indirect measure of density and size. 

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Please find below the solution to the asked query    

Option (4) is correct. 
Protein synthesis in the eukaryotic cell occurs with the help of ribosomes in the cytoplasm. 

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I think first is right
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All statements ar correct
So ans is (1)
a) Protein synthesis occurs in the rough endoplasmic reticulum, ribosomes and in the nucleus
(b) Discovery. Ribosomes were first observed in the mid-1950s by Romanian-American cell biologist George Emil Palade, using an electron microscope, as dense particles or granules
(c) A svedberg unit (symbol S, sometimes Sv) is a non-metric unit for sedimentation rate. The sedimentation rate for a particle of a given size and shape measures how fast the particle 'settles', the sedimentation.
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