MEDICAL SCIENCE-2015: Daily Answer Writing Challenge – 27

there is a precise molecular mechanism for initiating and terminating the synthesis of a polypeptide on ribosome. explain in your own terms what happens if the termination has failed.
the protein molecular ultimately needed by a cell often differs from the polypeptide chain synthesised. how is the chain modified to impart biological activity? describe with suitable examples.
enumerate the various anti-oxidant vitamins and write about any one of them.