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(genetic biology)

Grammar: noun
plural: receptors
Definition:
~ a specialised cell or group of nerve endings that responds to sensory stimuli

~ a molecular structure or site on the surface or interior of a cell that binds with substances such as hormones, antigens, drugs, or neurotransmitters
Example:
1. Cell surface receptors detect signals at membrane surfaces.

2. The hormone adrenaline interacts with its receptor, which activates sub-cellular regulatory proteins, raf and MAPk, so as to induce the synthesis of response proteins to alter glucose metabolism.