Which one of the following acts to increase the release of Ca" from endoplasmic reticulum?: (A) Inositol triphosphate, (B) Parathyroid hormone, (C) 1, 25-dihydroxy cholecalciferol, (D) Diacylglycerol
Answer is A. 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".