Posted by biochemistryquestions on August 20, 2009
Mouse Islet of Langerhans immunostained for Glucagon
Assume that you find a patient with a glucagon-secreting pancreatic tumor (glucagonoma). Which one of the following is most likely to result from hyperglucagonemia?
a) Decreased lipolysis
b) Hyperglycemia
c) Increased muscle protein synthesis.
d) Increased liver glycolytic rate
e) Increased glycogenesis
Posted in Carbohydrate Metabolism (Q), Hormones (Q), Integration (Q) | Tagged: biochemistry question, Glucagon, Glucagonoma, Hormones | 2 Comments »
Posted by biochemistryquestions on May 18, 2009
Which of the following sentences explain better the role of fructose 2,6-bisphosphate in glycolysis?
a) It antagonizes phosphofructokinase-1
b) It is an intermediate of glycolysis
c) It activates covalently aldolase
d) It inhibits allosterically hexokinase
e) It allosterically activates phosphofructokinase-1
Posted in Carbohydrate Metabolism (Q) | Tagged: biochemistry, Carbohydrate metabolism, Glycolysis | 3 Comments »
Posted by biochemistryquestions on May 4, 2009
Which of the following compounds is an allosteric activator of glycogen phosphorylase b in muscle?
a) AMP
b) ATP
c) Glucose
d) Glucose 6 Phosphate
e) GTP
Posted in Carbohydrate Metabolism (Q) | Tagged: biochemistry, Carbohydrate metabolism, Glycogen metabolism | 2 Comments »
