Assume E coli bacteria were grown in a nutrient medium conta
 Assume E. coli bacteria were grown in a nutrient medium contains the radioactive isotope 16N. After the 48 hr incubation period, the 16 N would most likely be form in the E.coli. 
 
  Assume E. coli bacteria were grown in a nutrient medium contains the radioactive isotope 16N. After the 48 hr incubation period, the 16 N would most likely be form in the E.coli. 
 
 Solution
Assume E. coli are grown in a nutrient medium containing the radioisotope 16N. After a 48-hour incubation period, the 16N would most likely be found in the E. coli’s
proteins.--------answer
proteins:
they are nitrogenous organic compounds .
they are composed of one or more long chains of amino acids

