glucose is a hexose sugar, which means it contain six carbon atoms. its molecules are stable and need to be activated before they can be split into two three carbon compounds.
what is the first step of phosphorylation in glycolysis?
One molecule of ATP is hydrolysed, and the released phosphoryl group is added to glucose to make hexose MONOphosphate.
what is the second step of phosphorylation in glycolysis ?
Another molecule of ATP is hydrolysed and the phosphoryl group add to the hexose phosphate to form a molecule of hexose bisphosphate. this sugar has one phosphate group at carbon atom number one and another at carbon number 6.