Radioisotopes Are Frequently Used to Label Molecules in a Cell

question 28

Multiple Choice

Radioisotopes are frequently used to label molecules in a cell. The fate of atoms and molecules in a cell can then be followed. Assume Saccharomyces cerevisiae is grown in a nutrient medium containing the radioisotope ³⁵S. After a 48- hour incubation, the ³⁵S would most likely be found in the S. cerevisiae's

• A) water.
• B) nucleic acids.
• C) proteins.
• D) carbohydrates.
• E) lipids.

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