Number of protofilament in microtubule is

Function of rough endoplasmic reticulum is

Subunits in prokaryotic ribosomes are

 Which of the following is a part of endomembrane systems of eukaryotic cell ?

Export firm of the body is

The term 'cytoplasm' and 'nucleoplasm' were given by

Protein synthesis takes place in

Rough endoplasmic reticulum differs from smooth walled endoplasmic reticulum due to the presence of

The largest subunit of prokaryotic ribosomes is

Cell theory was proposed by