Radioactive isotopes are useful in biological studies because

Question

Quizplus · Accepted Answer

Radioactive isotopes can be used in biological studies because organisms will take in molecules containing the isotope and use them normally, but the decay of the isotope can be detected using specialized equipment. This allows scientists to track the movement and behavior of molecules within living organisms. Option B is incorrect because radioactive isotopes can be incorporated into any molecule and used in any reaction, not just a few specific ones. Option C is incorrect because organisms do not actively remove isotopes from the molecules they use; instead, the isotopes will naturally decay over time. Option D is incorrect because radioactive isotopes are not visible to the naked eye and must be detected using specialized equipment. Option E is incorrect because working with radioactive isotopes can be dangerous and requires specialized training and equipment, so it is not necessarily easy or inexpensive.

Radioactive Isotopes Are Useful in Biological Studies Because