In muscle, glycogen phosphorylase kinase can be activated by nerve stimulation even in the absence of hormonal signals. Nerve stimulation alone results in activation of glycogen phosphorylase kinase as a result of:

#Question id: 1258

#Unit 4. Cell Communication and Cell Signaling

Following statements are regarding to the desensitization mechanism of GPCR.

A. Several residues in the cytosolic domain of the β-adrenergic receptor are phosphorylated by the enzyme rhodopsin kinase.

B. β-Arrestin binds to specific phosphorylated tyrosine residues in the C-terminal segment of G protein–coupled receptors (GPCRs).

C. Clathrin and AP2, two other proteins bound by β-arrestin, promote endocytosis of the receptor.

D. β-Arrestin also functions in transducing signals from activated receptors by binding to and activating several cytosolic protein kinases like Src activates the MAP kinase pathway, leading to phosphorylation of key transcription factor.

Which of the following combination is incorrect?

#Question id: 30112

#Unit 1. Molecules and their Interaction Relevant to Biology

#Question id: 28242

#Unit 5. Developmental Biology

 which types of Intracellular regulatory mechanisms that involve to regulate stem cell behavior occurs at the level of chromatin?

#Question id: 29498

#Unit 6. System Physiology – Plant

Which of the following permits the accumulation of transcriptional activators in the nucleus necessary for photomorphogenic development

#Question id: 6957

#Unit 5. Developmental Biology

The effect of grafting an extra piece of notochord into a dorsal position adjacent to pre-somitic mesoderm is