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Write notes on glycogen in the body of a mammal under the following headings: (i) its site of production, (ii) its function. - Leaving Cert Agricultural Science - Question a - 2008
Question a
Write notes on glycogen in the body of a mammal under the following headings: (i) its site of production, (ii) its function.
Worked Solution & Example Answer:Write notes on glycogen in the body of a mammal under the following headings: (i) its site of production, (ii) its function. - Leaving Cert Agricultural Science - Question a - 2008
Step 1
(i) its site of production
Answer
Glycogen is primarily produced in the liver. The liver plays a crucial role in metabolizing carbohydrates and is the main site for the synthesis of glycogen during periods of excess glucose in the bloodstream. Glycogenesis occurs in liver cells (hepatocytes), where glucose molecules are polymerized to form glycogen, which serves as an energy reserve.
Step 2
(ii) its function
Answer
The primary function of glycogen is as a carbohydrate store or energy store. It acts as a vital energy reserve that can be quickly mobilized to meet the body's energy demands, particularly during periods of fasting or intense physical activity. When the body requires glucose, glycogen is broken down through a process called glycogenolysis to release glucose into the bloodstream, ensuring a steady supply of energy to vital organs and tissues.