Chapter 24 & 25 Quiz

Which enzyme cleaves non-reducing ends of the glycogen chain by adding a phosphate group, resulting in glucose 1-phosphate?

Which enzyme shifts a block of three glucosyl residues from one branch to another during glycogen breakdown?

Which enzyme cleaves off the glucose at the ⍺-1,6-glycosidic linkage during glycogenolysis?

Which enzyme converts glucose 1-phosphate into glucose 6-phosphate during glycogen breakdown?

Which enzyme dephosphorylates glucose 6-phosphate in the liver, allowing for glucose release into the blood?

Which organ maintains glucose homeostasis of the entire organism during glycogen breakdown?

What allosterically regulates glycogen phosphorylase in the liver?

What positively regulates glycogen phosphorylase in the muscle?

What negatively regulates glycogen phosphorylase in the muscle?

What hormones stimulate glycogenolysis and gluconeogenesis in the liver?

Which enzyme cleaves non-reducing ends of glycogen chains through addition of a phosphate, making glucose 1-phosphate?

Which enzyme shifts a block of three glucosyl residues from one branch to another?

Which enzyme cleaves off the glucose at the ⍺-1,6-glycosidic linkage?

Which enzyme converts glucose 1-phosphate into glucose 6-phosphate through exchange of a phosphate group on a phosphorylated serine at the enzyme active site?

Which organ contains an enzyme (glucose 6-phosphatase) that dephosphorylates glucose 6-phosphate, allowing for glucose release into the blood for transport to other parts of the body?

Which organ maintains glucose homeostasis of the entire organism?

Which organ uses glucose to produce energy just for itself?

What allosterically regulates glycogen phosphorylase in the liver?

What positively regulates glycogen phosphorylase in the muscle?

What negatively regulates glycogen phosphorylase in the muscle?