A Mutant Cell Line Is Compared with a Nonmutant Cell

Multiple Choice

A mutant cell line is compared with a nonmutant cell line of the same type.The nonmutant cells secrete the steroid estrogen, but the mutant cells do not.Where should a researcher look to determine whether the mutant cells' defect is in the excretion of the hormone or in its synthesis?

A) The smooth ER
B) The rough ER
C) Mitochondria
D) Free ribosomes
E) The Golgi apparatus