Which of the Following General Statement(s)about a G Protein-Coupled Receptor

Question

Which of the following general statement(s)about a G protein-coupled receptor is (are)TRUE?
A)It contains 12 transmembrane domains.
B)It is positioned with the N-terminus on the cytoplasmic face of the membrane.
C)It is positioned with the C-terminus on the cytoplasmic face of the membrane.
D)all of the above

Accepted Answer

G protein-coupled receptors (GPCRs) typically have 7 transmembrane domains, not 12, making A incorrect. They are positioned with the N-terminus on the extracellular side and the C-terminus on the cytoplasmic side, making C correct and B incorrect. Therefore, D is also incorrect.