The late Dr. A.I. Oparin, Russian biochemist, is primarily responsible for the modern theories on the origin of life. He believed that inorganic substances could come together and spontaneously generate living matter. Dr. Oparin's atheistic philosophy did not permit him to entertain the possibility of a Creator.

When the oxygen supply runs short in heavy or prolonged exercise, muscles obtain most of their energy from an anaerobic (without oxygen) process called glycolysis. Yeast cells obtain energy under anaerobic conditions using a very similar process called alcoholic fermentation. Glycolysis is the chemical breakdown of glucose to lactic acid.