In: Chemistry
1. Glucagon inhibits glycolysis in the liver
because:
a.) it increases the activity of Fructose-bisphosphatase 2
b.) it causes a decrease in Fructose-2,6-bisphosphate
concentration
c.) it decreases the activity of Phosphofructokinase-2
d.) it causes a decrease in Fructose-2,6-bisphosphate
concentration
e.) all of the above
2. Glucagon:
a.) is a hormone that is structurally similar to tyrosine
b.) is produced by the pituitary gland
c.) works with epinephrine to increase the supply of glucose to
muscle cells
d.) is detected by a signal transduction pathway that utilizes
IP3
e.) both b and c
1. Glucagon inhibits glycolysis in the liver because:
a.) it increases the activity of Fructose-bisphosphatase
2
[Incorrect]
Glucagon inhibits F-bisPase 2. But glucagon
activates
F-2,6-bisPase.
b.) it causes a decrease in Fructose-2,6-bisphosphate
concentration.
Incorrect
It Increase [F-2,6-bisP]
c.) it decreases
the activity of Phosphofructokinase-2.
Correct
d.) it causes a decrease in
Fructose-2,6-bisphosphate concentration. incorrect
e.) all of the above
2. Glucagon:
a.) is a hormone that is structurally similar to tyrosine. Incorrect.
Glucagon is a oligopeptide with 29 residues. Epinephrine is
derived from Tyrosine.
b.) is produced by the pituitary gland . Incorrect
Synthesized by pancreas
c.) works with epinephrine to increase the
supply of glucose to muscle cells. Incorrect
Glucagon primarily raises glucose level in liver. Epinephrine
work through different pathway to increase glucose supply to
muscles cells.
d.) is detected by a signal transduction pathway that utilizes IP3.
Correct
IP3 pathway is used by insulin to increase glucose level is
tissues. Glucagon counteracts this pathways .
e.) both b and c