16 Questions
What is the type of bond formed between glycogenin and the initial glucose unit?
non-glycosidic bond
What is the function of glycogen synthase in the chain extending activity of glycogenesis?
to transfer glucose residue from UDP-glucose to the nonreducing end of an initially added glucose molecule
What is the result of the bond formation process between C1 of one glucose and C4 of another glucose?
Water is lost
What is the minimum number of glucose residues required for glycogen branching enzyme to act?
10
What type of bond is formed between a C1 and C4 which hydroxyl groups are pointing in opposite directions?
β – glycosidic bond
What is the type of bond formed between glucose units in the chain extending activity of glycogenesis?
α-1,4 glycosidic bond
What is the purpose of the phosphorylation of glucose in step 1 of glycogenesis?
To activate glucose for glycogen synthesis
What happens once a third glucose unit has been added in the autoglycosylation reaction?
Autoglycosylation stops
What is the role of phosphoglucomutase in step 2 of glycogenesis?
To catalyze the shift of phosphate group from C6 to C1
What is the function of pyrophosphatase in step 3 of glycogenesis?
To catalyze the exergonic breakdown of PPi
What is the role of glycogenin in the synthesis of glycogen?
To serve as a base molecule for glycogen synthesis
What is the maximum glycogen storage capacity of the liver?
100g
What triggers the production of insulin during glycogenesis?
High blood glucose levels
What is the non-reducing end of the glucose molecule?
Carbon 4 (C4)
During which state does glycogenesis occur?
Fed state
What is the number of carbons found in a glucose molecule?
6
This quiz covers the concepts of glycogenesis, including glycogen synthesis, phosphorylation of glucose, and glycogen reactions. It also discusses the organs involved in glycogenesis, such as the liver and muscle.
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