Now before we discuss this any further, let's actually remember what our cells use NADPH for and what our cells use the ribose phyphosphate molecule for. Well, the NADPH molecule is a very important reducing agent that our cell uses for a variety of different types of bisynthetic processes and detoxification processes. For instance, our cells can use NADPH for processes such as fatty acid synthesis, cholesterol synthesis, neurotransmitter synthesis and nucleotide synthesis. Now what about ribose phyphosphate? Well, ribose phyphosphate is a molecule that is basically needed to build nucleotide based molecules. So molecules such as DNA molecules and RNA molecules depend on the presence of ribose phyphosphate.