PG entrance exam CUET PG 2025 Mock Test Life Sciences Fundamental Processes RNA synthesis and processing
Rifampicin, an inhibitor of RNA polymerase, is added to a bacterial culture. The culture is immediately divided into three fractions, to which radioactive thymine or uracil or methionine are added, respectively. Five minutes later the cells are lysed and the radioactive label in all macromolecules is monitored.
What will you observe?
1
Thymine and methionine incorporated will be greater than uracil.
2
The labels will be equally incorporated
3
Uracil incorporated is similar to methionine but less than thymine
4
Uracil incorporated will be greater than methionine but less than thymine.