In the firs reaction of glycolysis, glucose is converted to . The phosphate comes from . A is an enzyme that transfers the terminal phosphate of to a substrate. The product of this reaction is then to fructose-6-phosphate.
Fructose-6-phosphate is then phosphorylated by a second reaction, giving .

EMP Pathway - Embden Meyerhof Parnas Pathway

glucose 6-phosphate; ATP

kinase; ATP; isomerized

kinase; fructose 1,6-bisphosphate

Explanation:

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.