True about second messengers ?: (A) Act on intracellular receptors, (B) Mediate response of extracellular hormones and neurotransmitter, (C) Mediate response of intracellular hormones, (D) Act by stimulation of transcription
Answer is B. Ans. is 'b' i.e., Mediate response of extracellular hormones and neurotransmitter