The primary role of hydrochloric acid is to sterilize the food you eat and to prevent harmful bacteria from entering the GI tract. HCL also triggers the release of enzymes such as pepsin which are essential for the digestion of protein.
To prevent them from spreading
Explanation:
cells have proteins called receptors that bind to signaling molecules and initially I ate a physiological response...because membrane receptors interact with both exteacellar signals molecules within the cell, they permit signaling molecules to affect cell function without actually entering the cell.
Answer: The arthropod nervous system consists of a dorsal brain and a ventral, ganglionated longitudinal nerve cord (primitively paired) from which lateral nerves extend in each segment. The system is similar to that of annelid worms, from which arthropods may have evolved.
Explanation: