#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: 9153
#Unit 9. Diversity of Life Forms
Imagine some cosmic catastrophe jolts Earth so that its axis is perpendicular to the orbital plane between Earth and the sun. The most obvious effect of this change would be ________.
#Question id: 12036
#Unit 7. System Physiology – Animal
#Question id: 19386
#Unit 12. Applied Biology
#Question id: 930
#Unit 1. Molecules and their Interaction Relevant to Biology
Ketone bodies are formed in the liver and transported to the extrahepatic tissues mainly as: