<Tr> <Th> ribosome </Th> <Th> subunit </Th> <Th> rRNAs </Th> <Th> r - proteins </Th> </Tr> <Tr> <Td> 70S </Td> <Td> 50S </Td> <Td> 23S (2904 nt) </Td> <Td> 31 </Td> </Tr> <Tr> <Td> 5S (120 nt) </Td> </Tr> <Tr> <Td> 30S </Td> <Td> 16S (1542 nt) </Td> <Td> 21 </Td> </Tr>

Where are ribosomes synthesized and what makes them so important