which is correct In muscle glycogen synthase is activated by

which is correct: In muscle, glycogen synthase:

is activated by an increase in the concentration of F26BP.

is phosphorylated by GSK3 and PKA leading to its inhibition.

is directly phosphorylated and activated by PKB.

is allosterically inhibited by Ca2+.

is dephosphorylated by PP1c that is activated, in part, by insulin signaling.

Solution

Following two statements are correct .

is phosphorylated by GSK3 and PKA leading to its inhibition.,

is dephosphorylated by PP1c that is activated, in part, by insulin signaling.

SINCE THESE ARE FACT BASED POINTS AND HAVE NO EXPLINATION...

STILL LET ME TRY TO EXPLAIN RATIONALE

when glucose is high insulin is produced glycogen is to be made so glycogen synthase has to operate positively so it should be activated and it is activated by removing inhibitory phosphorylations using PP1c (Protien phosphatase 1 catalytic subunit)

Hope it helps... FEEL FREE TO COMMENT AND DISCUSS ..I will be happy to help you .. Regards