Radioisotopes are frequently used to label molecules in a cell. The fate of atoms and molecules in a 18) ce'll can then be followed. Assume Saccharomyces cerevisiae is grown in a nutrient medium containing the radioisotope 3% After a 48-hour incubatir, the 35S would most likely be found in the S. cerevisiae's:.
A) nucleic acids.
B) proteins
C) carbohydrates
D) water
E) lipids