5 Questions
What is the main cellular site for glycogenesis?
The main site for glycogenesis is the cytosol of liver and muscle cells.
What is the definition of glycogenesis?
Glycogenesis is the intracellular synthesis of glycogen from glucose, which is the storage form of carbohydrates in mammals.
What are the sources and fates of glucose in glycogen metabolism?
Glucose can come from excess glucose in the blood (fed state) and can be converted to fatty acids. In the fasting state or when the body demands, glucose-6-P is used for energy.
What is the cellular and tissue location of glycogen storage in humans?
The majority of glycogen is stored in skeletal muscles (∼500 g) and the liver (∼100 g) in humans.
What is the structure of glycogen particles and how are they branched?
Glycogen particles can contain as much as 50,000 glucose units linked with α(1 → 4) bonds and branched by α(1 → 6) bonds.
Test your knowledge on glycogen metabolism, including glycogenesis, glycogenolysis, and the regulation of glycogen metabolism. Understand the structure and function of glycogen, as well as the sources and fates of glucose in the body.
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