If ¹⁴C-labelled uridine triphosphate is added to the growth medium of cells, what macromolecules will be labelled?
A)phospholipids
B)DNA
C)RNA
D)both DNA and RNA
E)proteins

Question

Quizplus · Accepted Answer

Uridine triphosphate (UTP) is a precursor molecule for RNA synthesis. Therefore, the addition of ¹⁴C-labelled UTP to the growth medium of cells would label only RNA molecules.

If ¹⁴C-Labelled Uridine Triphosphate Is Added to the Growth Medium