If radioactive deoxythymidine triphosphate (dTTP)is added to a culture of rapidly growing bacterial cells, where in the cell would you expect to find the greatest concentration of radioactivity?
A) nucleus
B) cytoplasm
C) endoplasmic reticulum
D) nucleoid
E) ribosomes

Question

Quizplus · Accepted Answer

The nucleoid is the region in prokaryotic cells where DNA is located and replicated. dTTP would be used in DNA synthesis, so the greatest concentration of radioactivity would be in the nucleoid where replication is occurring.

If Radioactive Deoxythymidine Triphosphate (DTTP)is Added to a Culture of Rapidly