Because you might have just done something different with the experiment and messed up someway during the test
In cellular respiration is the process of extracting energy in the form of ATP from the glucose in the food you eat. In stage one glucose is broken down in the cytoplasm of the cell in a process call glycolysis. In stage two the pyruvate molecules are transported into the mitochondria
No choice given but the development of nuclear weapons could be considered a negative consequence of the application of scientific knowledge for example when it was used on Hiroshima and Nagasaki killing and wounding 100's of 1000's of people.