The grocery store is exactly five blocks north, on the same street as your house. when you leave your house, you head south for two blocks, then east for four, rhen north for seven blocks, and then west for four. have you taken an efficient path?

it is the most commonly accepted one

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.