Answer:
1st option, 2nd option, and third option.
Explanation:
Did this problem and got it right with these answers! :)
The word that signifies "within the cell" which alludes to the signals moving from one place then onto the next inside the cell is the term "INTRACELLULAR".
Answer: It is considered the "Plastron". What your referring to it is a tough layer of skin on the back of the turtle.
Explanation: