د "گلايکوليسېز" د بڼو تر مېنځ توپير

''These are the major reactions, through which most glucose will pass. There are additional alternative pathways and regulatory products, which are not seen here.''

 

The first five steps are regarded as the preparatory (or investment) phase since they consume energy to convert the glucose into two three-carbon sugar phosphates ([[Glyceraldehyde 3-phosphate|G3P]]).