Answer:
Gap junctions
Explanation:
Gap junctions form pores that connect adjacent cells. In this way signaling molecules, ions and other substances can pass through the pore to the adjacent cell. This type of cell junctions are important in cardiac muscle responses, in brain signaling, during childbirth, etc.
Answer: To show how different members of a species are related.
#6 is A. They are all composed of one or more cells.
An exothermic chemical reaction is change in the chemicals that can never be undone, an exothermic solution is a combination of chemicals
