Add an image so we can help...
Answer:
C. Electrophoresis
Explanation:
Electrophoresis is used to seperate DNA based on its size and electrical charge, which explains why an electric current is passed through seperated parts of DNA.
I think it is the somatic nervous system.
Answer:
The first one
Explanation:
Think of it as Potential energy is lying in wait and once it moves it transfers into kinetic energy.