- Muscle cells are a part of muscles
- Muscle cells can store and release large amounts of energy
- Hence, parts of muscles can store and release large amounts of energy

- A bone is a part of a body
- Muscles push / pull bones to move the bones
- Hence, muscles move parts of the body

- Moving changes stored energy into kinetic energy and heat energy
- If a process changes something into something else, then that something is required for that process
- Therefore, an animal requires energy to move

- Muscles move parts of the body
- An animal requires energy to move
- Therefore, muscles moving parts of the body requires energy

- Parts of muscles can store and release large amounts of energy
- Muscles moving parts of the body requires energy
- Hence, releasing energy is used by muscles to move parts of the body

Therefore, releasing energy is used by muscles to move parts of the body
[Question]Muscle cells have the ability to store and release large amounts of energy. Which body function is best served by this release of energy?
[Context]- Muscle cells are a part of muscles 
- Moving changes stored energy into kinetic energy and heat energy 
- A bone is a part of a body 
- Muscle cells can store and release large amounts of energy 
- If a process changes something into something else, then that something is required for that process 
- Muscles push / pull bones to move the bones