Lecture F Flashcards
(38 cards)
Glycogenin
Protein around which glucosyl units attach
Largest glycogen particle
5500 glucosyl units
T/F
FA are more reduced than glycogen
T
2 major Sites of storage
Liver
Skeletal muscle
What plays key role in glycogenolysis
Inorganic phosphate
In glycogenolysis glucose 1-p converts to
G-6-p
Following a meal, glycogen stored in
Booth liver and muscle
Following exercise, glycogen preferentially stored in
Muscle
T/F
Presence of glycogen in muscle requires less water than the presence of glucose
T
T/F
Branching reduces osmotic pressure
T
2 forms of glycogen
Proglycogen
Macroglycogen
Proglycogen mobilized during
Anaerobic exercise
macroglycogen mobilized during
Aerobic / endurance exercise
Glycogen synthesis most rapid in
1st hr after exercise
Which one replenish sooner after exercise or depletion
Proglycogen or macroglycogen
Proglycogen
T/F All enzymes (north for synthesis and breakdown ) found within the glycogen molecule
T
T/F
Glycogen phosphorylase turned ON when glycogen synthase turned OFF
T
Phosphorylation activates
Glycogen phosphorylase
Phosphorylation inhibits
Glycogen synthase
Phosphatase activates
Glycogen synthase
Phosphatase inhibits
Glycogen phosphorylase
As exercise progresses, glycogen stores
Decreases and its use is reduced
T/F
Training can delay decrease in glycogen store
T
T/F
Effect of glycogen sparing effect of training is due to changes in activation or activity of glycogen phosphorylase
F