Complex sentence: Also the size of Ribosomes in prokaryotes is smaller than that in eukaryotes, but two organelles found in eukaryotic cells, the mitochondria and the chloroplast, contain ribosomes similar in size and makeup to those found in prokaryotes.
Split into simpler sentences: Also the size of Ribosomes in prokaryotes is smaller than that in eukaryotes. Two organelles found in eukaryotic cells, the mitochondria and the chloroplast, contain ribosomes similar in size and makeup to those found in prokaryotes.