Radioisotopes are useful when
A) very high sensitivity is required.
B) turnover rates need to be determined.
C) the fate of portions of particular molecules need to be followed.
D) very high sensitivity is required, turnover rates need to be determined, and the fate of portions of particular molecules need to be followed.

Question

Quizplus · Accepted Answer

Radioisotopes can be used for all three purposes listed in the options - to achieve high sensitivity in detection, to determine turnover rates, and to follow the fate of specific portions of molecules. Therefore, the best choice is D, which includes all three options.

Radioisotopes Are Useful When