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They form a complex with the receptors. The entire NCERT textbook questions have been solved by best teachers for you. Amino Acids Quiz1. A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. One gene codes for each polypeptide. engineering college students follow good questions get job Skip to content Engineering interview questions,Mcqs,Objective Questions,Class Notes,Seminor topics,Lab Viva Pdf free download. A G-protein-linked receptor activates G protein, which activates phospholipase C, which cleaves a membrane protein to form IP 3 , which binds to a calcium channel on the ER, which opens to release calcium ions into the cytoplasm, which bind to an intracellular enzyme that carries out a response. 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