What is the smallest particle of the element oxygen (O) that can still be classified as oxygen?

This problem has been solved! see the answerfor aerobic respiration, a variety of substances must be in a state of influx across the inner membrane. assuming a brain cell in which glucose is the sole energy source, indicate for each of the following substances whether you would expect a net flux across the membrane and if so, how many molecules will move in which direction per molecule of glucose catabolized.- electrons-pyruvate-oxygen-atp-adp-acetyl coa-glyceral-3-phosphate-nadh-fadh2-oxaloacetate-water-protons