Question

Name the two high energy phosphate in human metabolism .why they are called so? Compare these with glycerol-1 phosphate

Answer 1

Humans produce energy by using two metabolism cycles called Glycolysis and Krebs cycle.
In Glycolysis, DHAP(DihydroAcetone Phosphate) produces glycerol-1-phosphate as an intermediate. 
In Kerb's cycle or Citric Acidic Cycle, different molecules with the help of enzymes undergo reactions to produce ATP.

Answer 2

Metabolism in Humans is not possible  without the help of high energy phosphate molecules.
The two High energy phosphate in human body are :
--->ATP - Andenosine Triphospate
---> ADP -- Andenosine diphosphate
These two high energy phosphates are so called because they contain high energy phosphate bond. Further on hydrolysis they give out  free energy sufficient for metabolic activities.

ATP is produced by Glycolysis, DHAP[DiHydro Acetone Phosphate]  produces glycerol -1-phosphate as an intermediate.

Glycerol -1-phosphate further produces ATP,NADH, Pyruvate which is not  a direct energy giving molecule.
ATP has high energy phosphate bonds when hydrolyzed it releases 30.5Kj/mol energy.
ATP  +H2O------>ADP + ENERGY

While ADP is hydrolyzed to AMP it releases 30.5 kj/mol energy.

ADP+H20--->AMP +ENERGY
Direct hydrolysis of ATP produces the high energy which is the important difference with Glycerol- 1-Phosphate.