The ribosomes of the chloroplasts are
smaller than the cytoplasmic ribosomes
bigger than the cytoplasmic ribosomes
of similar size to that of cytoplasm's
size of ribosomes cannot be measured
Thus, ribosomes found in chloroplast are smaller than those found in the cytoplasm. Ribosomes found in chloroplast are made up of two subunits: 50S and 30 S = 70S. Ribosomes found in cytoplasm of eukaryotes are made up of two subunits: 60S and 40 S = 80S.