In Gene Expression, When Does Negative Control Occur? When

Multiple Choice

In gene expression, when does negative control occur? When

A) lactose is transported into the cell.
B) a kinase adds a phosphate to DNA.
C) an activator is removed from DNA and shuts down transcription.
D) DNA is coiled too tightly for genes to be transcribed.
E) a repressor binds to DNA and shuts down transcription.