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In a dead or killed animal, glycogen of liver disintegrates enzymatically to form-
A. lactose
B. fructose
C. glucose
D. none of these

Last updated date: 13th Jun 2024
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Hint:In animal cells, food is stored in the form of glycogen. In the liver, the excess glucose of the blood is converted into glycogen.

Complete answer:
In a dead or killed animal, the metabolism is ceased after death. Due to this, the enzyme required for the degradation of glycogen is unavailable. This causes the glycogenesis and glycogenolysis to cease. No processes take place after the death of an organism. Therefore, no more new molecules are formed.

Additional information:
Glycogenesis- Gluconeogenesis is the process of synthesis of glycogen, in this process, the glucose molecules are added to form chains of glycogen which are stored in cells. Glycogenesis is activated in the liver during rest periods occurring after the Cori cycle. It is also activated by insulin when the glucose levels rise in blood.

Glycogenolysis- The breakdown of molecules of glycogen into glucose (glucose is a simple sugar in the body). The body uses this glucose for energy production. Glycogen is stored in the form of a long chain of glucose. The process of glycogenolysis takes place in muscle and liver cells when the body needs more energy.

Thus, the correct answer is option D. None of the above.

Note:The process of formation of glycogen in the liver is called glycogenesis. The breakdown of sugar is called glycolysis but the production of glycogen from glucose is called glycogenesis.