1. <span>They all have endoskeletons.
2.</span><span>They have brains protected by skulls.
3.</span><span>They have closed circulatory systems.</span>
Answer:
Explanation:
Phosphorylation is the process of adding a phosphate group to an existing molecule to prepare it to change or do work. ... In glycolysis, in which enzymes breakdown glucose releasing energy, an enzyme called hexokinase helps to transfer one inorganic phosphate group from ATP to glucose to form G6P.