Gluconeogenesis, glycogenesis and glycogenolysis

Gluconeogenesis is the metabolic process by which organisms produce sugars (namely glucose) for catabolic reactions from non-carbohydrate precursors. Glucose is the only energy source used by the brain (with the exception of ketone bodies during times of fasting), testes, erythrocytes, and the kidney medulla.

 

For better understanding, students must watch the following video

 

https://youtu.be/1R6KB12Wtyw

 

Glycogenesis is the process of glycogen synthesis, in which glucose molecules are added to chains of glycogen for storage. This process is activated during rest periods following the Cori cycle, in the liver, and also activated by insulin in response to high glucose levels.

 

Glycogenolysis is the breakdown of the molecule glycogen into glucose, a simple sugar that the body uses to produce energy. Glycogen is essentially stored energy in the form of a long chain of glucose, and glycogenolysis takes place in muscle and liver cells when more energy needs to be produced.

 

For better understanding, students must watch the following video

 

https://youtu.be/1R6KB12Wtyw

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1606631282-1603018949-gluconeogenesis.ppt (1.45 MB )

1606631282-1603018976-gluconeo-glycogen-metabolism.ppt (0.34 MB )