Who am I?: (7th grade science) you won't find me in bacteria which is an example of prokaryote. I am in control of things

Okay so this would be an example of eukaryotes.

Explanation:

eukaryotes are multicellular organisms with so many cell types, so it control all gene expression.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.