Which BEST compares the respiratory system to the circulatory system? The respiratory system transports oxygen to cells, while the circulatory system provides oxygen for cells. The respiraptory system breaks down food for cell energy, while the circulatory system rise the body of waste. The respiratory system provides oxygen for cells, while the circulatory systems transports oxygen to cells. The respiratory system rids the body of waste, wile the circulatory system breaks down food for the cell energy.