There are about 10,000 ribosomes in a bacterial cell which makes upto 30% of the weight of the cell. The bacterial ribosomes are dispersed in the cytoplasm. They are the sites of protein synthesis. The bacterial ribosome sediments as 70S particle which is composed of 30S and a large subunit is of 50S. The small subunit of the prokaryotic ribosome functions in the association with messenger RNA during translation and decoding. The large subunits of the ribosomes function as peptidyl transferase center and it is the site of peptide bond formation. The structure of bacterial ribosome is made up of over 50 proteins and three large domains of RNA molecule.
So, the correct answer is option A.