Aerobic respiration has three stages: glycolysis, krebs cycle, and the electron transport chain. what are the end products of the electron transport chain
a.) water and atp
b.) nadh and fadh2
c.) oxygen and glucose
d.) hydrogen ions and oxygen

According to the cell theory, which describes cells? a. all organisms are composed of multiple cells. b. all cells have the same structure and function. c. cells are found in everything on earth. d. living organisms are not created spontaneously