So as we discussed previously, the NADPH molecules are very important reducing agents that exist inside our cells because the cells actually use these molecules to help generate many other biological molecules. So things like fatty acid molecules, cholesterol molecules, nucleotide molecules, neurotransmitters, all these things require NADPH molecules. In addition, the cells also use the NADPH molecules to help detoxify many different types of toxic agents that exist inside our cells. Now what about the ribose phyphosphate molecule? Well, the cells of our body use the ribose phyphosphate to help generate nucleotide based biological molecules. So anytime the molecule contains a nucleotide, that means it requires ribose phyphosphate.