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G Protein-Coupled Receptors Are Important Molecules Involved in Signal Transduction α\alpha

Question 78

Multiple Choice

G protein-coupled receptors are important molecules involved in signal transduction. Which statement about G protein-coupled receptors is true?


A) They are activated only by steroid hormones.
B) They bind only guanine nucleotides.
C) They bind both adenine and guanine nucleotides.
D) They generally contain seven membrane-spanning α\alpha helices.

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