Why? Well, because these glycolytic intermediates can now be transformed into glucose phosphate molecules and these glucose six phosphate can undergo the oxidative phase to produce even more NADPH molecules. And it turns out that this process here, the transformation of the ribose phyphosphate into these glycolytic intermediates, is the non oxidative phase of the pentose phosphate pathway. So once again, when the cells need NADPH much more than ribose phyphosphate molecules, the cells can actually transform this pentose sugar, the ribosphy phosphate, into specific glycolytic intermediates via the non oxidative phase. So we have the oxidative phase and the non oxidative phase and this constitutes the pentos phosphate pathway. Now the non oxidative phase of the pencils phosphate pathway can be broken down into four processes.