175. A 70-year-old man comes to the physician because of a 1-month history of heavy, pressing substernal chest pain that occurs when he walks up a flight of stairs. The symptoms are relieved by rest. The physician prescribes a drug to alleviate the symptoms. Within the cell, the drug acts by breaking down into a compound that binds to a protein to increase intracellular concentrations of cGMP, resulting in vasodilation. This binding most likely occurs in which of the following cell locations? A) Cytosol B) Golgi complex C) Mitochondria D) Nucleus E) Peroxisome F) Plasma membrane

175. A 70-year-old man comes to the physician because of a 1-month history of heavy, pressing substernal chest pain that occurs when he walks up a flight of stairs. The symptoms are relieved by rest. The physician prescribes a drug to alleviate the symptoms. Within the cell, the drug acts by breaking down into a compound that binds to a protein to increase intracellular concentrations of cGMP, resulting in vasodilation. This binding most likely occurs in which of the following cell locations? A) Cytosol B) Golgi complex C) Mitochondria D) Nucleus E) Peroxisome F) Plasma membrane