If bacteria are infected with a bacteriophage and briefly exposed to radioactive uracil, what results would you expect to see immediately after exposure?
A)radioactive mRNA in the cytoplasm
B)radioactive mRNA in the nucleus
C)radioactive DNA in the cytoplasm
D)radioactive DNA in the nucleus
E)radioactive proteins in the nuclear membrane

Question

Quizplus · Accepted Answer

Bacteria do not have a nucleus, so options B, D, and E are incorrect. Uracil is incorporated into RNA, not DNA, so option C is incorrect. Therefore, radioactive uracil would result in radioactive mRNA in the cytoplasm.

If Bacteria Are Infected with a Bacteriophage and Briefly Exposed