Respuesta :

rasberryfairy09876

Answer:

Cells have proteins called receptors that bind to signaling molecules and initiate a physiological response

"Different receptors are specific for different molecules. ... Receptors can also respond directly to light or pressure, which makes cells sensitive to events in the atmosphere."

got it from g00gle:)

Explanation:
ounces is In the apothecary system of measurement, equal to one apothecary pound. a) eight O b) 16 c) 12 d) four