If plant cells are grown on media containing radioactively labeled thymine for one generation,where will radioactively labeled macromolecules be detected?
A)only in the nucleus
B)only in the nucleus and mitochondria
C)only in the nucleus and chloroplasts
D)in the nucleus,mitochondria,and chloroplasts

Question

Quizplus · Accepted Answer

Radioactive labeled thymine will be incorporated into the DNA of the plant cells during cell division. As a result, the labeled DNA will be present in the nucleus, as well as in the mitochondria and chloroplasts which contain their own DNA. Therefore, the macromolecules will be detected in the nucleus, mitochondria, and chloroplasts.

If Plant Cells Are Grown on Media Containing Radioactively Labeled