<prompt> Which one of the following acts to increase the release of Ca from endoplasmic reticulum?Inositol triphosphateParathyroid hormone1, 25-dihydroxy cholecalciferolDiacylglycerol  <response>: Ans. is a i.e., Inositol triphosphateo Inositol triphosphate IP3 mobilises ca from endoplasmic reticulum.o Diacylglycerol DAG enhances activation of protein kinase C by ca. 